i have the model 12fv in 223, a few weeks ago the gun was shooting the 75 amax very tight, like under 1/2", also shot the 52 sierra 1410 tight too, all i basically done is added a 3" wide plate to the front of the stock to use a benchrest type front rest, and had the gun apart 5-6 times since, thinking maybe i need to skim bed it, tried a few different torque settings no difference in groups. one thing i noticed from when the gun was new to now after 500 shots or so, the throat is somewhat longer, when the gun was new the 75amax measured 2.410 after approx 500 rounds the measurement is at 2.425, been shooting them at 2.405. load is either 24gr or 24.5gr varget. i know i am missing something, i tried neck and full sizing,, the only thing is that i am not 100% sure is the primers, if they were 205m or 205, tonight i fired 50 rounds with the regular fed 205's, next time i will try the 205m's

Chet

ps i forgot to mention the groups are around 1" now at 100yds, the 55vmax shoots tight, but i am going to be shooting between 450 and 500yds and don't feel confident with the 55's out there