If you ever fired a 37mm or 40 mm grenade laucher, you have to try some of the mini-slugs that were sold in 20 round boxes a few years back, the shell is about 1.5 inches long and has a 5/8 ounce slug, when you shoot them, you can actually watch the slug fly and hit the target, out of the TCR they are like shooting a 30 carbine.... you can even hear them hit the berm at 100 yards....
regards,
Graycg