I have a pacnnor super match 1-11 on my vanguard sub moa varmint and it has a chamber made wit a standard 204 ruger reamer. the factory barrel shot good wit 39bk only, at 2.25 col. 40 gr v-max shot terrible. nosler 40 gr shot terrible at 2.25col but shot 1 inch seated out to max mag length, off the top of my head I don't know this measurement. now the pacnor was a piece of work, h4895 and h335 were no good, I tried varget next and it shot 30 gr bergers great seated short. 40 noslers and v-max were a no go either long or short. 45 hornady sp were ok. 39 bk shot good as long as the mag let me seat them, but just ok at 2.25. but id get vertical fliers 1 or 2 in a ten shot group that would open groups to about .8. the other 8 or 9 were in .5 or less. finally I got my hands on some r-10x, 39 bk seated long shoot good now. fliers went away and groups tightned. never tried r-10x wit any of the other bullets and not going to. never spent so much time finding a load for a gun
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also what barrel life r guys getting I put 3000 rounds on the factory barrel, it was .5-.6 shooter for most of its life, it ended up 1-1.25moa. I got 1100 through this barrel so im already thinking ahead