I had one original mix target fail to detonate at 25 yards, but then the next one detonated at 25 yards and the next two detonated at 30 yards. The decreased sensitivity after storage did not seem to occur. What is going on? Was the period of storage too short or the temperature too low for it to occur? It was stored at a temperature in the low 80s for several hours cooling to the low 60s at night.
The new mixes, except for the desiccant dried (DD: Dried with Desiccite 25) version seemed to be about the same sensitivity with fairly reliable detonation as 25 yards with occasional detonations at 30 yards. The DD version required 15 yards for reliable detonation.
The estimated velocities for this mornings test (60F) are:
15 yards => 1429 fps
25 yards => 1366 fps
30 yards => 1335 fps
I guess I’ll have to store the targets longer to see if that makes the difference. It seems that it is always the case that more tests are needed.
The hypothesis being tested was that water from the Ethylene Glycol (it’s part of the manufacturing process) was degrading the mix over time. “Doc Brown” from work, as well as others, suggested I use a desiccant to remove the water. Ammonium Nitrate is a desiccant and I have tons of that laying around, would that work? Doc Brown said, “Tons? TONS!” I had a hard time getting him to stop obsessing over the quantity an focus on my question but ultimately he insisted that silica gel might be better. Because it probably won’t react with the Ethylene Glycol. He wasn’t sure what would happen with the AN. “But we mix the AN with the EG all the time now. I just want to grind it up some of it first, then mix it with the EG, rather than use it in prill form like we do now. He kept repeating “Tons!” and I had to change the subject.
Today I got to start the experiment.
I thought I had a bunch of silica gel laying around but it turns out it was Desiccite 25. Oh well, I’ll work with whatever I have. I cut open the bag and spread the content on a electric frying pan set at about 230 F. It was amazing the amount of water than condensed on the lid covering just half of the pan. After about 45 minutes no more water was condensing and I put the contents in a zip lock bag.
I put a couple of cups of AN prills in the blender and ground that into a fine powder then put it in the frying pan at about 200 F for about five minutes. No condensation so I put it in a zip lock bag as well.
I put about 3/4 of an inch of the two chemicals in the bottom of some paper cups and poured EG over the chemicals. I mixed the EG and the chemicals, put lids on them, and let them set for an hour.
While those were setting I made two batch of Boomerite. One was the original mix with no attempt to dry the EG. In the second batch I put 3/4 cup of the powdered AN in the bottom of the mixing bowl and put I the usual amount, 45 mL, of EG and mixed it into something which looked like a slushy. I then added 1500 grams prilled AN, mixed for a five seconds, added 400 grams of Potassium Chlorate, mixed for 30 seconds, add the mystery ingredient, and mixed for another 30 seconds. I called this mix Powdered Ammonium Nitrate Mix.
I then used the EG I poured off of the two paper cups I had set aside and mixed as usual.
All Boomerite was put in 3” boxes and closed up using heat shrink bags. The shrink was done using the electric skillet set at 225F.
A couple hours later stored at a temperature of about 80F I tested them with CCI Stinger ammo from 25 yards away.
The original mix failed to go boom from 25 yards while the other three mixes detonated with solid hits. I moved to 15 yards and then the OM target detonated as well.
That was interesting. It was a sample size of one for the OM, but it appears that all three of the other mixes were more sensitive after two hours than the OM. That’s a good sign as long, as brother Doug pointed out, I don’t end up creating a contact explosive.
I’ll do the ~1 day storage detonation test tomorrow morning and report sometime after I get home tomorrow night.
I found this particularly amusing and applicable because one of my motivations for Boomershoot, and in particular the posting of the recipe for Boomerite, was because of a law that Senator Feinstein wrote and got passed many years ago. That law made it illegal to distribute “bomb making instructions”. We don’t use “the ‘B’ word” at Boomershoot. We make “reactive targets”. In part, Boomershoot is about mocking Senator Feinstein.
After Boomershoot I don’t want to even think about it for a while. Unless email requires a response from me I just let it set in my inbox. I finally got around to looking at the collection and thought I would share some of it.
I had a fantastic time at my first Boomershoot! Thank you and your crew for making this event happen, and for supporting the 2nd amendment. I hope to be back next year!
The BBQ was amazing!
She also shared a picture of the fireball:
Enjoyed the opportunity to come with the guys and get to shoot. Enjoyed meeting some of the other shooters, great folks!!!!!!
It was a great experience!
See you next year!
From Greg and Bob:
It was the most enjoyable event we’ve been to. The weather was perfect and our shooting neighbors were friendly. It was great. We did not have any issues during the event. The fireball was amazing, the targets exploded and the BBQ was excellent. Looking forward to next year.
Thanks again for this wonderful event. I have been coming for many years and each time is the best time I have all year. Looking forward to next years event already.
You and your crew give a great party!
Joe, I had a great time throughout the weekend. Great people, food and scenery. Something I will do for next year is site my riffles better (add scope).
Mark your calendars. Boomershoot 2016 will be April 22nd, 23rd, and 24th.
I’m pretty sure Janelle and Barron told me at least the gist of what they were going to do. But my mind is running close to overload during Boomershoot and since their plans didn’t have much to do with running the event they got filtered.
I had been I wondering why in this picture Janelle was facing away from the fireball:
After finding this picture on Facebook I was able to reassemble the memory fragments:
I’m unable to determine if this is a true story about someone else or some sort of joke webpage. But as applied to me the conclusions presented are absolutely true:
Presidential bid by Joe Huffman unlikely
Lack of name ID, fundraising hurdles are practically insurmountable for Huffman
The 2016 campaign for President is heating up, but Joe Huffman is likely to spend this race on the sidelines.
Based on the field of would-be Presidential candidates, it appears Huffman is already too far behind to mount a credible campaign, and for that reason would be unlikely to jump into the fray.
“Joe Huffman simply doesn’t have the name identification of Hillary Clinton, Jeb Bush or any of the other top-tier candidates. And can Huffman raise a billion dollars of campaign cash in the next 18-months? Frankly, I’m skeptical. I say this all with due respect for Huffman and their family.”
Joe Huffman’s net worth would need to be competitive with that of Clinton or Bush, or they would need to have many wealthy, generous supporters to finance a credible presidential campaign.
Opposition researchers investigate all candidates’ backgrounds, hoping to find negative potential issues like an arrest, divorce, bankruptcy, affairs, girlfriend / boyfriend, mug shot, etc. If there were such issues for any potential candidate, that would be a challenge to overcome. For example, George W. Bush overcame the disclosure of an arrest for driving while intoxicated (DUI or DWI) in 2000 and was elected President.
While some may discount the possibility of Huffman jumping into the 2016 Presidential race, there remains a path Huffman could follow should they decide to run.
I’m sure there are many people who will be quite relieved. Why? We have to keep our priorities straight. I wouldn’t have time for Boomershoot next year if I were seriously campaigning.
Come up with the best caption for this image from Boomershoot 2015 in the comments and I’ll give you a free Boomershoot 2015 shirt, mug, or thong. Family and Boomershoot staff are welcome to participate but won’t be getting a free anything out of it.
My decision is autocratic, final, and may appear to be at random.
My thoughts are as follows:
Impressive stick throwing from 375 yards away.
You’ve proven yourself with the hastily constructed spears.Now try using lead projectiles to get detonations.
The BC of wood projectiles is too low to retain enough velocity for reliable detonation.
I know reloading components have been tough to come by recently but this substitute doesn’t have much future.
The Boomershoot 2015 fireball was very well done and impressive. Here are some of the details of the construction.
There were 15 seven-inch square targets, each containing 800 grams (about 1.8 pounds) of Boomerite arranged as shown below around a 50 pound bag of powdered sugar:
The target in the lower right with the two red dots was facing the audience and shooter. This is the initiating target which propagated the detonation to the rest of the targets.
In the picture below you see 19 gallons of the gasoline/diesel mixture in place on top of the explosives.
The job of the explosives is to lift the gasoline and mix it in the air. Usually we have a ratio of explosives to gasoline of about 1 pounds to 2 gallons up to 1 pound to 1 gallon. This time it is about 1.4 to 1.
In the picture above we have the people that designed and constructed the fireball (left to right: Mike, Matthew, Barron, and Ry) along with the road flares attached with rubber bands to rebar and wooden sticks. One or more of these flares ignited the fuel air mixture.
In Phil’s slow motion video below you will see the ignition start on the side opposite the shooter and propagate to the remainder of the fuel-air mixture.
In this frame capture from Ry’s video you can see the dust propelled into the air some distance from the explosion. I suspect this is from the shock wave traveling through the ground.
In the still picture of mine below you can see pieces of shredded milk jugs which have been propelled beyond the expanding “ball” of fuel and that most of the fuel has been ignited. The flares mounted on the rebar and sticks are entirely engulfed in the fireball.
The following pictures is one of the most interesting fireball photos I have ever seen. Usually it is mushroom shaped or even flattens out more than the picture above. But this ball of fire barely touches the ground and is a decent approximation of a sphere. I’m not sure what the white streamers coming out of the fire are. Perhaps pieces of burning milk jug or lumps of powdered sugar.
Here, a fraction of a second later, we have the ball of fire suspended in air on what is a probably a column of water vapor from the explosives:
Here, another fraction of a second later, we have the fuel still burning high up in the air and forming a smoke ring:
Watch Ry’s video and see the fire roll around in the sky. It’s amazing:
In the picture below, less than a minute after the explosion, we have Barron standing in the middle of the crater he created. But notice there is no fire on the ground. In years past there were patches of burning fuel on the ground. There was none this year. It all went up into the air.
Another thing, as pointed out by Ry this year and last (edited to add: Ry says the first time was 2011 or earlier), is that nearly all of the flares have been extinguished. Ry is the first person I know who has successfully extinguished road flares with gasoline.
Don’t try this at home. Come to Boomershoot 2016 instead.
Kim Huffman-Scott Boomershoot Target Production Manager
May 2, 2015
[I put Kim in charge of target production this year. This is one of the best decisions I have ever made. It dramatically reduced my work load and stress level. But most of all she did an awesome job.
The production line is usually running for about 13 or 14 hours to produce the targets for Boomershoot. This time it was less than eight hours. Part of this was the enthusiastic “army of people” (as Barb describes it) there to help. But Kim figured out how to put them all to work and they listened to her.
Kim quickly identified bottlenecks and fixed them. This is a dynamic problem because it depends on which size targets are being produced and who is doing which job at the time. She also would anticipate when to change the line to a new target type. This is tough because the production line may have 10 to 20 targets in various stages of completion but you only have a good count of the number of actually completed crates. The following video gives you a clue of what it was like. It doesn’t show the people outside folding the boxes.
As the production crew cranked up the production rate it became more and more difficult to get a snapshot of completed crates and targets in production. This resulted in today’s QOTD. She told me this a few minutes after I took the video above.—Joe]
From the participants viewpoint things are going quite well. The weather is good with moderately warm temperatures, no precipitation, and no to light winds. The Boomers seem to be detonating well if there are solid hits.
From the staff viewpoint things things are pretty good. The biggest hiccup was when the first thing this morning Barb’s rented car locked the doors automatically with the keys inside along with the cash box, wristbands, and the check-in list for the Precision Rifle clinic. This was 15 minutes before people were scheduled to check in. Barb was quite upset and I was almost unable to convince her it was going to be okay. She called the rental agency who had roadside assistance out in a little over an hour and unlocked her car. I set her up with my laptop and the electronic version of the check-in list. No wrist bands and the laptop was a little more awkward than crossing people off the list with a pen, but she got through it just fine.
Another minor issue was the private fireball didn’t work the first or second time. There was a combination of problems. Some of it was improper construction and some shooter problems as well. The third attempt at a fireball was acceptable:
There were some injuries. I twisted my ankle, Barb scraped her back a little bit, and we saw some moderately bad sunburns.
For me it is difficult to see anything but the flaws but I had several people tell me how much fun they were having and how great an event it is, and what I overhear and see on their faces confirm this. This is what makes Boomershoot worthwhile to me.
Sarah Hoyt — born in Portugal, naturalized to the U.S. — has seen this kind of thing before. It’s the old Stalinist-Marxist mentality which Sarah got to see up close and personal. It’s the mentality my former boss (who was a refugee from Soviet-era Poland) knew all too well, too. Frankly, any time I talk about the 21st century American fascination with political correctness, refugees from the Marxist countries recognize it instantly: the collective effort to control and dictate what is and is not permissible to say, or to think, or to feel, including who you can and cannot associate with; lest you be hauled before the commissars to be tried for guilt-by-association.
This mindset must not be allowed to dominate politics. The body count racked up by this mindset during the 20th century was in the hundreds of millions. We must prevent a repeat performance in the 21st century.
Yesterday morning while it was still to cold to work I went for a walk and take rubber bands and empty milk jugs to the Taj. I discovered a squatter in the explosives magazine:
It was ejected from the premises and the carpet cleaned up as best I could with a hand broom:
I left some treats in case they or some relatives decided to visit again:
I then proceeded on to the tree line where most of the Boomershoot targets are placed and put up some steel targets:
We will paint them before the event.
Today I discovered one of the scales we use for measuring the chemicals for Boomerite was having problems. Putting in new batteries and banging it around didn’t help any. I probably paid $20 for it something like five years ago and it has had problems before. I set it aside and ordered a $300 scale just like the other scale I have from Amazon for next day delivery.
Today I’ll tidy up the work benches in Mecca more and move the ATV and trailer here. I might also turn some of the clumpy (basically fist sized rocks) Potassium Chlorate into powder too. I have a new shipment coming in on Friday but if I can use the old stuff that would be better. The stuff I used for my experiment this week was made from the old stuff so I know it is chemically active if I just reduce it in size appropriately.
Boomershoot is looking good for this year. Even the weather is looking great. No chance of rain and highs in the upper 60s. There will be some winds to make things a little bit challenging but probably nothing that will be insurmountable. The winds start out low and build to a peak about 4:00 PM every day. Plan accordingly.
Last night I mixed up some Boomerite for more tests. I wanted to answer the question as to why it goes dead after some time has passed. I did some tests in January without getting a conclusive clue. Tonight I performed the experiment I suggested in the previous post. I put some of the targets in a cooler and kept them at ice temperature and I kept other targets warm. The targets in January were kept at about 70F for 26 hours. This time the hot targets spent the night wrapped up in two coats on top of a hot water bottle then put out in the sun for the day. I didn’t measure the actual temperature because I just wanted to see if the temperature made a difference.
Another thing I did was that for some of the targets I used plastic baggies for the Boomerite of instead of the shrink wrap on the outside of the boxes. Unfortunately the targets in cold storage got completely soaked when the ice bag leaked. Only the cold stored targets that used zip lock baggies could be tested.
The total storage time from mixing until testing was about 23 hours.
In the results below the number represent the range in yards using my .22 with Stinger ammo that the given result occurred. The estimated velocities for the various ranges at the altitude and temperature I was experiencing are
11 yards => 1455 fps
15 yards => 1429 fps
20 yards => 1397 fps
23 yards => 1378 fps
25 yards => 1366 fps
30 yards => 1335 fps
13 dud, 11 pop
23 dud, 12 boom
It is very clear the cold storage preserves the Boom. There are also some strong hints the baggie storage may preserve the Boom better than the shrink wrap storage.
One conclusion that could be reached is that I need to make the Taj Mahal into a walk-in refrigerator. As brother Doug said, “That’s inconvenient.” Another is that there is a chemical reaction going on that is accelerated by temperature and that perhaps I should change the recipe such that no such reaction takes place.
Don’t kid yourself that you’re in the clear because of your ancestors; it wasn’t just Jews, and the others weren’t all gay or gypsies, either: the politically unpopular got one-way trips, too. Once a nation starts down that path, each step into evil is easier than the one before.
You don’t have to like politics, but you’ve gotta keep an eye on it. No matter who you are.
April 15, 2015 Holocaust Remembrance Day
[The German people of the late 1930’s and early 1940’s are best known for their evil behavior but the Russians while Stalin was in power easily eclipsed the German body count. The Chinese killed millions at various times during the 20th Century. The Rwanda genocide wasn’t on the same scale in absolute numbers but may have account for as much as 20% of the population. The examples are incredibly and depressingly numerous.
There is one thing governments, of any type of people, do very well and that is killing people. We have lots of government in this country and it going to require lots of attention until we can get it back down to the originally designed limits. The stakes are incredibly high if it goes totally malignant.
This is Why Boomershoot. It’s next weekend. Be there if you can. You can be part of the solution if things go really bad.—Joe]
My sales tax quarterly filing for Boomershoot stuff is due today. The Idaho State Tax Commission has a new website for E-filing and paying taxes and when I tried to file on Saturday (yes, I procrastinate, it’s where daughter Xenia gets it from, see also here) it wouldn’t let me file. Barb tried calling and got a message saying their hours were Monday through Friday. I tried again this morning and still couldn’t get the button to file like the instructions said would be there.
Six minutes after they opened I called and pressed ‘0’ to speak with someone. The recorded messages said, “Your estimated wait time is four thousand, seven hundred and 60 minutes.”
This is what you get when dealing with monopolies. I can’t wait, but everyone will, for single payer health care.
As I had to take a shower and get to work sometime before midday Thursday I wrote them a letter with my story of woe*, sales numbers, and a check then mailed it on my way to work after I sent them an email saying the check was in the mail.
* It is possible it is my fault. After I had the letter and check sealed up in the envelope I noticed a tiny field on the online form. It was where I expected to have a label saying “ID number” because my tax ID number was just to the right of it. But it said, “Annual”. It’s possible they switched me to filing annually instead of quarterly without me reading carefully enough some letter they sent a few months ago.
But my guess is that the software vendor accidentally converted all the quarterly filing people to annual filing.
My usual cell phone fails to boot. It probably will be a few days before I have a replacement. If you want to reach me and the usual number doesn’t get a timely response my alternate cell phone is 425-894-1677.
Nine days ago Barb and I were in Idaho and among other things we inspected the daffodils we transplanted nearly two years ago. Last year they were rather disappointing with only a little bit of foliage and almost no blooms. I was concerned they weren’t going to make it. But this year they are looking pretty good:
I don’t know if they will still be blooming for Boomershoot this year but I hope so.
It snowed most of the morning and on the north slopes and higher altitudes it stuck on the ground pretty good:
We unloaded the stakes at the Taj Mahal, then we went to Mecca where I puttered around with Wi-Fi, lights, and shelves while Barb swapped out some fluorescent bulbs for LED bulbs and folded a bunch of target boxes.
Barb also got the conference/dining room at the Orofino Best Western scheduled for Boomershoot 2016. The date will be announced at the Boomershoot 2015 dinner on May 2nd, just 17 days from now.
Everything is on track for great Boomershoot this year. There are still positions available if you would like join us for an event you will never forget.