I am looking direction and advice on turning necks on a .223 Remington for improved accuracy. I have a Savage Model 12 LRVP with a 1 in 9" factory barrel with a factory cut chamber. Is there any known improvement with a rifle like this in turning the necks down to a smaller diameter. If so what would that diameter be? At present I am neck sizing to .248. My choice of brass is Lapua. I use Benchmark for lighter bullets (52, 53, 55's) and Varget for heavy bullets (69, 70VLD, & 73's). I just boughta jug of Accurate LT-32 and will try it with the lighter bullets. I am also seating .008 to .010 off the lans. Thanks and all suggestions will be appreciated. Thanks, Richard