K
Kimberguy2004
Guest
I need to start loading for my AR build, which is chambered in 20 Practical, not to be confused with 20 Tactical. Both rounds are based on a .223 case necked down to .204. The only difference is the 20 Practical.uses an unaltered .223 case with a 23 degree shoulder necked down, while the 20 Tactical case has a 30 degree shoulder. Would the pressures in these two cases be close enough for me to start working off of the 20 Tactical load data? There's tons of information on that round and hardly anything on the Practical.