I've got a few hundred of the 165gr matrix bonded, .277 bullets, Marshall, the bullet maker, recon they go all right in a 1-10 twist, esp. the WSM and Wby, his words where, "push em hard,"
He also said a faster twist is ideal, and recommend a 1-8 as then I could shoot his 175gr, .277
I had a go with my EW M70 270wsm,(1-10) it didn't seam to like them, nor anything else I tried, sold rifle and gave up. Gave a few hundred away, to others to try, never heard back, so don't know.
Was a few fellows shooting them in long range comps over here, Its, well known Marshall has rubbed a few noses in the mud, with his 270 at long range, much to the disgust of the 300 win, 7mm, 6.5 shooters.
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