Well I just got my new Model 12 LRPV 22-250 9" twist to the range for the first time yesterday.

I did my 20 shot break in using some very accurate loads from my other 22-250's to do the break in and sight in. The gun didn't like them too well so I was concerned.

I then shot 5 different development loads and only one made the .5 MOA which was a 75 gr HPBT Hornady. The 75 Amax's didn't do so well but one was under 1
inch MOA but the rest were much bigger. I did have one load with 75 AMAX that I will retry that was 5 shots but I can only find 3 holes with 2 holes touching to make a ragged hole. I'm using Lapua brass 210M primers and H4350 powder. I will work up some more loads but wondering if anyone has any suggestions for powder or bullets that they have had particular success with.