Re: horizonal stringing
drop down in bullet weight, i have a 700 sps buckmaster 243 same twist as yours 9.25 and it does well with 95s .300-.550" but it stays under .300 with 80s. i have often found that the remingtons and the h&rs like lighter bullets, rugers and savages do a little better with the heavier ones. plus if it is new you will want to shoot it until it stops copper fouling, run some copper solvent through it, and a dose of J&B compound. thats the best i can tell you, good luck!