Home Forums Hunting & Shooting Ask The Gunwriters Why do the 6.5x55 rifles react so poorly to cast boolits at 1900-2000 fps?

I did not see the OP's twist rate.

If you are anywhere over 1 in 8 it won't work. The heaviest you can really go with great accuracy, my experience, is 130's from a 1 in 9. I believe the original Mausers were 1 in 8.56 to shoot 160 grainers. Don't know about the velocity.

But the BC of a 150 or 160 makes it a cruise missle. Should be pretty predictable at long range.