Olympic arms UMAR, mine is a 22-250 and shoots 5 shot .5 inch groups at 100 yards with hand loads. I used 40 grain nosler BT and they caused quite a bit of laughter this summer prairie dog hunting with the red mist. You just have to watch yourself and not do too many mag dumps because she gets hot in a hurry.
J E Custom,
This would be my second AR purchase, as the last one was a RRA A4 Varmint. I've given some thought buying the upper and lower separate, but I don't think the R-25 can be purchased that way.
I need to shop online to see who sells an upper in larger calibers than .223/5.56 and go from there. I know RRA sells the 6.8spc and 6.5 grendel, but I'm not sure what other manufacturers sell them...or .243 or .308 or etc.
I perfer the stopping power of the larger calibers, for coyotes.
you could look in to the wssm calibers. 243,25,300 olympic arms