02-02-2015, 06:12 PM
I'm not aware of many problems with 24" barrels. The 28" barrels with RLGS can exhibit belted case bulges with certain hand loads if there isn't enough spring pressure and reciprocating mass static weight, causing early unlocking with pressure still in the case enough to bulge it out.
22" is a good length to go with, since the velocity increase gets really flat once you go past 20". There's a graph in Volume I on Page 55 that shows this. You get maybe 35fps average increase speed with the extra 2" going from 22" to 24". The velocity change is a curve between shorter and longer barrels, with the curve being more steep on the shorter end, while being flatter on the longer end.
The Cerakote finish on those appears to be very uniform. Looks like a nice receiver set. Just make sure to bed your barrel well, since you're using forged with a heavy pipe. I'm kinda in the same boat with a heavy barrel build in the works, but I'm using Seekins billet receivers.
22" is a good length to go with, since the velocity increase gets really flat once you go past 20". There's a graph in Volume I on Page 55 that shows this. You get maybe 35fps average increase speed with the extra 2" going from 22" to 24". The velocity change is a curve between shorter and longer barrels, with the curve being more steep on the shorter end, while being flatter on the longer end.
The Cerakote finish on those appears to be very uniform. Looks like a nice receiver set. Just make sure to bed your barrel well, since you're using forged with a heavy pipe. I'm kinda in the same boat with a heavy barrel build in the works, but I'm using Seekins billet receivers.
NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com