I've read bout the twist variations in 250-300 99s, but never check mine till 45 minutes ago. Multiple checks show 13 1/2 twist. Gonna try some 100 grainers to see if the 1948 EG will spit em out straight. Shoots 87 Speer Hot Cores very well, but curiosity is calling.
I just do NOT get it. I have killed many deer with a 87 grain bullet that is "supposed" to be a varmint bullet. Not a single deer has required a second shot, except the ones I missed on the first shot. Still, when hit, they looked electrocuted. I have shot several deer with the 100 grain Winchester silvertip from the same rifle. Yes, they died, relatively slower, but died nonetheless. A deer will never notice 13 grains of bullet. Myself, I'll stick with 87's.