Bookworm is your 99 a 250-3000 or 300 Savage? All of the older 250's had a 1-14 twist and are marginal at stabilizing the 100gr factory load, they work best with 87gr flatbase bullets. Some days I think Savages rifleing machine got out of whack and there are some 250's out there that are 1-15. My 250 hates 100gr factory loads but comes on real nice with 75's and 87's. I have Savages 1899 & 99's in 25-35, 250-3000, 308 and 375 Win. Love the old girls. I also shoot a Rem 722 in 300 Savage.
AWS