I am having a good friend of mine build me a 22-243 Wincester...Shilen CM 1-9 twist using winchester brass and Varget powder, 75 Gr. Hornady A-Max..I guess my question is how do they perform? Anything to wory about..barrel burners? scattered rounds on paper? I am useing my Mauser 98 action that was chambered in 7x57..Thanks