So i was watching the outdoor channel yesterday and i think it was on shooting gallery. Anyways they were talking about barrett firearms and they apparently have a new upper receiver forthe M107A1 that is chambered to fire a 25mm cannon cartridge. The round itself weighs about 4oz's and leaves the muzzle at 1400 fps. at 2000 meters it can go through 3inches of steel . also they added multiple hydraulic buffers to absod some of the recoil.......... They also talked about the newer 416 round they developed. its a 400gr projectile that flies at 3300fps and is effective and more accurate than the 50bmg at ranges of like 2000 meters but is more suited to soft targets i would imagine. Anyways didnt know if anyone else had seen it or heard anything about it. Thought it was interesting none the less and couldnt imagine what shooting a 25mm cartridge would be like.