I have a 7 wsm savage with factory 1-10. Seems to be shooting pretty good but haven't gone to anything above 162. Think this twist will hold up to longer heavier bullets?
7mm wsm twist rate
- Thread starter grouse
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elkaholic
Well-Known Member
Not very well! You can run a 9 with some of the 180's, but most people get an 8 now with all the long, heavy bullets available.....rich
That depends on how fast you can push it and what altitude you're at or your hunting grounds. For instance, I have .300 WSM with 1:10" twist and the Berger 215 calls for a 1:9" twist. I am pushing it at 2750 FPS out of 24" barrel"
@ 0' altitude, SG is marginal at 1.47 (1.5 or higher is ideal).
@ 3333' altitude (my home/range) SG is comfortable at 1.67.
@ 7500' altitude (elk hunting grounds) SG is comfortable 1.95.
Try http://www.bergerbullets.com/twist-rate-calculator/
Good luck!
Thanks. If i push the velocity I could get away with 175 at 5000 and up.
That's the ticket ... good luck!
You should be able to as Rich noted.
