Activity for a Not Quite Rainy Saturday Afternoon

slang · 10-04-2004, 10:48 PM

That's true and a good suggestion.

Stopping the bullets/coin is one part of the challenge, keeping it within a given area another, and finding it still another.

At the velocities normally associated with firearms projectiles, the bullet/coin often bounces around where one would not expect. At full velocity and energy they might bury into the ground. Having hit something like particle board first and slowing down slightly, they may just bounce.

The whole practice is better done on some controlled lab with gellatine but those of us geeky enough to want to do this dont normally have that type of access.

404Error · 10-05-2004, 01:13 AM

Actually, tacking the coin to the target board with staples around the edges worked for me. The coins either stayed in place or just fell to the ground in front of the board after being hit. Of course the velocity and type of bullet had a lot to do with it, I was using hand loaded .223 cal. FMJ's in my AR-15 with a 4x Colt scope at 25 yards to perforate these coins. They went right through the coins like hot butter!
Duct taping them to the target board probably would have worked good too.

slang · 10-05-2004, 03:03 AM

Ah, yes, high velocity changes the picture. The 45acp doesnt have the zip to pierce the coin. The coin absorbs the energy. Totally different result, as we see in the pics.

xoxoxoBruce · 10-05-2004, 03:45 AM

Quote:

The whole practice is better done on some controlled lab with gellatine but those of us geeky enough to want to do this dont normally have that type of access.

Water works too.

10-04-2004, 10:48 PM	#1
slang St Petersburg, Florida Join Date: Oct 2002 Posts: 3,423	That's true and a good suggestion. Stopping the bullets/coin is one part of the challenge, keeping it within a given area another, and finding it still another. At the velocities normally associated with firearms projectiles, the bullet/coin often bounces around where one would not expect. At full velocity and energy they might bury into the ground. Having hit something like particle board first and slowing down slightly, they may just bounce. The whole practice is better done on some controlled lab with gellatine but those of us geeky enough to want to do this dont normally have that type of access. Last edited by slang; 10-04-2004 at 10:55 PM.

10-05-2004, 01:13 AM	#2
404Error Lecturer Join Date: Feb 2004 Location: CT USA Posts: 826	Actually, tacking the coin to the target board with staples around the edges worked for me. The coins either stayed in place or just fell to the ground in front of the board after being hit. Of course the velocity and type of bullet had a lot to do with it, I was using hand loaded .223 cal. FMJ's in my AR-15 with a 4x Colt scope at 25 yards to perforate these coins. They went right through the coins like hot butter! Duct taping them to the target board probably would have worked good too. Attached Images __________________ "To disarm the people is the most effectual way to enslave them." ~George Mason~

10-05-2004, 03:03 AM	#3
slang St Petersburg, Florida Join Date: Oct 2002 Posts: 3,423	Ah, yes, high velocity changes the picture. The 45acp doesnt have the zip to pierce the coin. The coin absorbs the energy. Totally different result, as we see in the pics.

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