Sometimes a reloader needs to capture a fired bullet to evaluate the reload's potential terminal ballistics characteristics. This is commonly done with a "water trap".
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A wire basket from an old, chest freezer, a plastic garbage bag, a picnic table and off screen to the left, a snow bank. |
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Dimensions of the wire basket are 20" long by 10" wide by 7" tall for a calculated volume of a bit less than 7 gallons. In metric, that is 500mm long by 250mm wide by 175mm tall with a volume of about 27 liters. |
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Momentarily distracted by a passing thought of caution I added a chunk of firewood at the end of the trap. I did not need to. |
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The most energetic round I load. 30-06, 180 grain Remington Core-Lokt soft point. 57.5 grains if IMR 4350. 2800 fps. Provided a hunter can hit the target, this load is the cat's meow for such moose, elk, grizzly bears and amorous Holstein bulls as wander about Southern Michigan. |
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The view downrange. |
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Houston, we have collateral damages. The zero temperature this morning probably made the plastic of the table brittle. I will have to fix that before Mrs ERJ notices. I will use yellow pine. |
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Do you see the bullet? |
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It is right in the middle of the red circle. |
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A closer view. There were no signs that the bullet hit the chunk of firewood. |
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The basket is reusable. |
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This is what the reloader wants to see. How widely did it expand. How much weight is retained. |
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The smooth face of this bullet is indicative of a bullet that has been trapped in water. The diameter was 0.575" |
Conclusions:
- The top of the picnic table needed replacement anyway.
- The 20" long water trap stopped a stout, big game bullet.
- The 20" long water trap should be capable of stopping handgun bullets if they expand.
- It is always prudent to have a backstop. Bullets do not always travel in a straight line after hitting the surface of the trap.
- It was easy to find the expanded bullet to collect expansion and retained weight data.
- The wire basket is reusable. The big game bullet bent it up somewhat, but the big game round delivered 9.5 times more energy than a 9mm handgun round.
- Garbage bags are cheap.
Heh! Good post.
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