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
|Hot||Shrink wrap||23 pop|
|Hot||Shrink wrap||13 dud, 11 pop|
|Hot||Shrink wrap||11 dud|
|Hot||Baggie||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.
As always, more tests are needed.