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Posted: 10/25/2025 11:07:02 AM EDT
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If I'm correct, most 40mm practice rounds are traveling 300ish FPS. Not using a chalk round, but maybe a printed windsheild, is it possible to create a back stop that can catch the round and not deform it for reuse? Maybe a large cardboard box filled with some sort of material? Could this even be used inside? |
Joined:
Jun 2022
Posts:
72
EE: 100% (1)
TX, USA
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Our department uses a tarp hung over a horizontal bar to catch the practice projectiles. We use the Defense Techmolgy 40mm reloadable training rounds and having the hanging tarp as a backstop keeps the projectile in good enough shape to last the 10 reloads that the manufacturer says they are good for. Joat |
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The tarp method would work the best IMO. Use caution firing any 40mm inside… I had a rather large basement at my old house. Figured I’d try an Xact impact rubber bullet down there. Used a steel folding chair as a target. Figured 5 grains of Bullseye would be a “light” load… it was not. Keep in mind this was 1995ish. Not much info out there and I was doing a ton of R&D with these. Well… 5 grains put that rubber bullet thru the chair back, then bounced it around my basement for a bit. Turns out 3 grains is plenty where rubber bullets are concerned. Only dented the chair with 3. Zincs are hard. Fully loaded zincs will go thru more stuff than a rubber bullet. Most 781s are loaded with 7ish grains of M9, about the same as Bullseye. Zincs don’t bounce much either, but they will ricochet. GROG |
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Use a chunk of heavy carpet remnant, hanging down from a frame, loose at the bottom, as big as you can get it. When it gets hit the carpet moves and absorbs the projectile energy and pretty much just lays them in a pile at the base of the carpet chunk. They don’t bounce back or go off in random directions. Can also use a piece of rubber stall mat, but the carpet works better, does not tear thru as quickly, and it is cheap as hell. If it is large enough you can shift the impact point around every so often so you don’t wear it out too quick. We shot them all the time indoors, hundreds of rounds of Def Tec’s, regular impact rounds to check zero’s, yellow nosed training reloadable projectiles, and the blue nose trainers. Carpet was fine for all of them. If you want you can paint an outline on the carpet for aiming, but just using a regular target and target stand works best. We actually used full person sized cardboard targets with different colored impact zones. |
a loaded gun won’t set you free, so you say…
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Thank ya'll for the insight. When I posted this, I had only fired a launch charge aimed at an arrow stop. The stop captured the burst cap, so I assumed rounds would be no problem. Since then I have had 4 chances shooting M781s with my last range trip shooting a stop sign. Wow. I don't have the ability to post photos here, but I can post a YouTube link. At the end of the video you can see the stop sign I was shooting. The pushers dented it and in 2 impacts, tore the sign. That was at 50 yards. Maybe a reduced power launch charge with a light weight printed projectile would be easier to catch, but my luck, it's hit something and ricochet. Least in my house, way to small for this guy.  Shooting the M203. #pewpew #targetshooting #m203 |
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