My latest 270 Win barrel has a 1-9 twist and is 22” long. The throat length is increased to an OAL of a hair less than 3.5”.
It will move an old 170 Speer at 2730 AND I haven’t yet tried R26.

Someone wrote earlier that high BC bullets need more velocity. Apparently he hasn’t heard of the 6.5 CM.

I will keep using my ancient 270 Win until it starts failing.

Last edited by RinB; 03/11/21.

“Perfection is achieved not when there is nothing more to add, but when there is nothing left to take away”.
Antoine de Saint-Exupery. Posted by Brad.