theflatlander...I have a M12,LRPV,.223 w/ 1/9tw factory barrel,Savage F-class stock,w/ a Weaver T36.
After 2 years of trying this and that,I've settled on 69gn Sierra,23.5gn/VV N135,Lapua match brass,F205's.
Bullet seated .010" off the lands. I have shot many 5 shot groups of under .5" @ 200 yrds. Shot from concrete bench,Farley co-ax,and using wind flags. These groups are of course in GOOD conditions when I'm shooting well,but it does show that the rifle/load combination is good. Good luck...good shooting...gpoldblue