I’ve been as busy as a cat on a hot tin roof yesterday and today.

Yesterday Ry, Barron, and I went out to the Boomershoot site to do some tests. We got back into town and had lunch about 2:30. Barron came back to my place to wait for his wife, Janelle, to pick him up. They stayed until almost 11:30 as we discussed Boomershoot, all the worlds problems and how to solved them (the answers are “glitter”, “guns”, and “explosives”).

Today I went to an USPSA match and then scrambled with the Boomershoot 2010 participants having minor problems signing up for Boomershoot 2011. Some people take sign up very seriously.

Anyway, I have not had time to report on the test results from yesterday beyond a short Tweet.

Barron did a great job reporting with pictures and video.

Ry also has pictures.

Tomorrow is also very, very busy for me. So rather than report on things I’ll just say, “What they said.”

(Outdoor Channel) with Michael Bane will have their Boomershoot show January 4th and 6th at 3:00 AM ET and January 5th, 3:30 PM, 7:00 PM, and 9:00 PM ET. This was with the video they took last April at Boomershoot 2010.

I don’t have cable and if someone would be able to record that and get it to me I would very much appreciate it.

I’ve asked about 100 people to do this already so before you send me a 1 GByte email or put the effort into burning a DVD check with me to make sure it’s not already taken care of.

Last night I told daughter Kim, “You are going to be on national television this week.”

She glared at me.

I continued, “He spend a lot of time talking to you.”

“Did we get a copy to review first?”

“Nope.”

The glare hardened.

I think it will turn out okay. But I’m glad I’m going to be 300 miles away when it shows.

Update: Trailer for the show is here. Or below:

I have version 3.0 of the chalk dispenser system sitting in my living room now.

The small boxes marked “RED CHALK” conveniently fit into the 3” opening on the top. They sent us some empty boxes to put the Boomerite in. The Boomerite will go in first and be exposed to gun fire through the 1.5” hole in the front.

This version also has 1/4” armor plate on the face. This should withstand the bullet impacts much better.

Ry plans to be back in Idaho on Saturday and we will visit the Boomershoot site to do our tests. The weather forecast on Saturday is for a low of -1 F and a high of 15 F. We had a blizzard last night and today and it put down several inches of snow. This may complicate things some. I’m not sure we will be able to drive all the way out to the Taj Mahal to mix the Boomerite. I may have to walk or snowshoe in, mix it up, and carry it back while Ry preps the target at the shooting berm.

Our favorite chalk dispenser designers and builders have shipped version 3.0 to our bunker in North Central Idaho. It hasn’t arrived yet but they created a video of its construction:

Assuming the weather cooperates I should be able to test it sometime late this week.

Ry has his own video of this but I took video with my Windows Phone 7 and wanted to say a few things about the results of these tests separate from other tests on his video. First the video:

We have been doing tests of steel chalk dispensers with mixed results. The chalk goes up into the air nicely but the dispensers have not had a very long life. Ry decided to test adding the chalk directly to our seven inch square cardboard box targets. The chalk was positioned in one of three different ways:

1. Behind the Boomerite
2. On top of the Boomerite
3. In front of the Boomerite

The second configuration was the most visually pleasing but for a normal target this means the top half of the target is inert as far as the shooter is concerned. They only have the bottom half of the target available for detonation. But what we could do is use this in a hybrid target. We use a steel plate with a hold in it like the existing “chalk dispenser” targets with one of these cardboard box targets a foot or so behind the steel plate. We would not have to confine ourselves to very small Boomerite charges to prevent damage to the steel and we could put a lot more chalk on top of the target. It would be a little more work to set up the targets, get the alignment just right, etc. But the steel construction part would be a lot easier and would guarantee the steel targets would be reusable.

Our favorite chalk dispenser designers and builders have done some more tests. Here is the video:

In behind the scenes email it appears we will get a Version 3 unit for test with Boomerite by New Years Day. I plan to cut the charge in half, down to 100 grams, and see if that gives us sufficient lift for the chalk.

I also plan to modify the first unit by removing the containment box in the back and just put a specially constructed (chalk inside the target) 7” target a few inches behind the metal plate with the hole in it. I think this will work just as well and will only be a slightly more work in the field and much simpler to construct.

Ry and I went out to the Boomershoot site with a new version of the chalk dispenser (also known as Blastmaster 6000). An identical unit was tested in California a few days ago using Tannerite and it worked well without showing any signs of weakness. We were pretty confident that it would hold up better than version 1.0.

We used 200 grams of Boomerite in each test. By volume this one cup, which was the same amount used the designers in their first tests. They later increased the amount to a soda can full with still no structural failures. We put 500 grams of chalk dust on top of the Boomerite.

In this first pictures you can see the chalk dust on top of the Boomerite. The zip lock bag of Boomerite is just visible in the front hole.

Ry will probably have video to share in a day or three but in the picture below you can see the dispenser was moved a couple feet by the blast. The dispenser appeared to be undamaged.

The second test was essentially the same as the first. The only intentional difference was that the Boomerite wasn’t poked partially through the front and rear holes. This time the dispenser was moved several feet and there was some obvious damage:

I set it up for a third test and expected it would probably “cut loose” this time. The movement was about the same and the fractures widened. Notice the bottom of the containment area is starting to bulge and the middle “rib” is bulging out the back too.

In terms of a long lasting target this has some problems. But it survived three uses which is as much as it really needs for the Boomershoot main event. We should consider cutting the Boomershoot charge in half because I think the ejection of the chalk will be sufficient with a much smaller charge.

On the drive back to my home in Moscow we pondered why the difference between their tests and ours. We had pretty much decided that it was because of the chalk dust on top of the explosives because we just couldn’t imagine Boomerite being that much different than Tannerite. But I replayed the video from the California tests and they used chalk too. So the only other variable that I can think of are the temperature and the Boomerite. Our temperature was about 24 F with the first test done while the metal was probably significantly above that because it had been in the warm vehicle. By the time of the second and third tests the metal was probably close to ambient temperature. Could that temperature change made the metal brittle and weaker?

Update: Ry has the video and details on other tests we did.

Our favorite chalk dispenser designer reported that video of tests using Tannerite instead of Boomerite has been posted:

The results look promising. Assuming the weather allows it and the test target arrives on time Ry and I will do our own testing this Saturday.

I have heard from those involved there are plans to bring a little more firepower than usual to Boomershoot 2011.

Here is some video from the test firings: