Originally Posted by chas0218

I have shot 4 different top shelf ammo manufacturers.

Barnes Vort-x triple shok boat tail
Hornady custom
Winchester supreme elite
Federal vital shock nosler partitions

I shot all side by side waiting between shots to allow proper cooling of the barrel and the Hornady superformance shot the best out of the rifle. I am just trying to get better accuracy out to 300 yards. My rifle shoots .5" or less groups at 100 yards but at 250 yards they are spread out to the size of a grapefruit. I am shooting off a Lead Sled rest so there is no flinching. Only thing I can think of is the barrel just isn't broken in yet. I have shot 40 bullets thru a brand new gun. Any advice would be great.

I was just thinking I would be able to have more consistent powder loads +/- .01 gr.

Anyone else have some tack driving loads they are willing to share.

On a side note I was just thinking that the powder I had was a little on the old side and I will try it with some newer powder and see what my results are.

Thanks,
Chas