308 vs 6 ARC & 6.5 Grendel

I understand your dilemma.
There is a part of me that wants to jump on the MRGG-A band wagon and get a 14.5” 6.5cm barrel for my MWS. Shave the rails off and lighten it a bit… it will still probably be a heavy beast though.

I think barrel profile and suppressor selection will be pretty important. My 18” 6.5 CM is one of the easiest semi autos I have to shoot accurately (and isn’t crazy heavy) so that has me intrigued as to how a 14.5” would do
 
  • Like
Reactions: Bakwa
Page 416 Speer reloading manual 168 gr bullet almost 2900 fps in a 24" barrel and over 3000 for the 150 gr....I'm using a .5 grain to .3 grain under their max load.
No problem with pressure. But it is a max load or close to it, obviously, and should be worked up to.
These are my normal 308 manual loads...I use 30" barrel, long action, and hybrid cases if ya want to go 3255 fps for a 168 gr. In 308 win.

I’ll see how this barrel likes it. I have a little 2000mr left over from experimenting with it years ago. Is your accuracy pretty consistent with it? Dependable load without any fliers/poi changes or weird pressure spikes?

My go to gas gun load in my 16” is TAC with 178 eldm’s at 2440 fps. But it’s extremely repeatable and flows like water loading it, so I quit messing with it.
 
  • Like
Reactions: Bakwa and 45-90