I have several rifles some for long range and some for medium range and some for short range. I have a Remington Model 7 Stainless, leupold bases and rings, leupold 2.5 X 8 VX3. As a factory gun it shot sub 1. moa groups with handloads. After about 400 rounds it started shooting like a shotgun. Last year I pillar bedded the stock, glassed in the lug, free floated the barrel with no effect. I pulled of the barrel and scoped it. Slick from the throat about 8 inches, poor quality rifling for about 3 inches and flat almost gone rifling the last 8 inches of the barrel. I removed the barrel lapped the lugs, trued the action face, replaced the barrel with A 20" Broughton, 1:12, 5C. It would shoot 150 Accubonds sub .750". I decided to try some Barnes Tipped Tripple shocks in 130 and 150 grain. The first test loads were with all bullets set back .050 off the rifling. I tried H 4895, Varget, Win 748 in 42.5-49 grain increments. The best groups were about 1. moa most were 1.25 moa. I moved the bullets forward to .025 off the lands and repeated the process. With Win 748 I had to stop at 48 grains due to preasure issues. The groups may have tightened up .25. I then moved the seating depth to .015" off the rifling and loaded 46. gr. of W-748. All groups were sub 1. moa but not touching like the Nosler Accubonds.
The rifle weighs only 5 lbs and has a wicked recoil so I put a Harroll's muzzle brake
on it yesterday. The next 25 rounds the recoil was very mild of couse the was a fair bit more muzzle blast and noise.
The last load were shot with the bullets seated .10" off the rifling and all loads were done at 46. grains. Primers showed some preasure but no ejector marks. Best results was about .750" and most at 1. moa.
I shot 5 Accubonds again for a test and the group was sub.5 moa.
I shot 5 Swift Scirroco .010" off the rifling and they shot sub.5moa.
My question am I expecting too much out of the Barnes bullets?
When talking to the Barnes techs they suggested trying TAC powder.
Has anyone else shot the 130 and 150 Tipped tripple shocks in a 1:2 barrel and gotten sub.750 moa?
I am wondering if thee bullets reqire a longer barrel to get stabilized.