popping primers tying up an autoloader, and THAT can be prevented. It's no big deal to crimp or stake in or otherwise secure a primer in its case , ya know. It takes a LOT more pressure to cause any serious deformation or splitting of a 223 case than it takes to get the sort of velocities I claim, for 10-11" barrels, <font color=red>*</font><font color=red>*</font><font color=red>*</font><font color=red>*</font><font color=red>*</font><font color=red>*</font><font color=red>*</font>. Nobody said you have to PRACTICE with such loads, ya know. Or even with THAT upper, or THAT AR. u dont need to fire 1000 rds of 223 a year to stay SHARP (either shoulder) if you use a silencer and practice with the 22 unit (5-10k rds a year) so it's your stupid ASSUMPTIONS about how many rds are to be fired, (hot loads) that make the whole thing seem out of line.