Likely cause most RCM rifles are based off 20" barrels while the 338-06 in most load books is in a 24" barrel.
Yes, (20" verses 23") but the powder charges listed are LESS for the RCM case.
Doesn't make sense, especially when you look at Hornady Factory loads are loaded pretty stiff and getting quite the speeds.
http://www.hornady.com/store/338-RCM-200-gr-SST-Superformance/Listed factory load of 2,950 mv for a 200 grain bullet compared to the Load Guide of 2,850 mv.
That just tells me they CAN load a higher pressure load.
I'm very impressed with this rifle/cartridge concept.
