Re: .277 dia. 115 gr HPBT MatchKing
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From my experience with light weight 277 bullets at high velocity the advantage is less recoil allowing more consistent accuracy in field conditions.
90 and 110 grain bullets @ 3600FPS were super varmint loads but little chutes opened at about 420 for the 90s and just a little farther for the 110s. Shots beyond 425 were next to if not impossible. Shots around 420 yds were ~80% hits.
I'd figure the 115 SMK would do better than either the 90 or 110 grain offerings. Especially out of a WSM loaded up a bit.
I'd see if a decent load using a ball powder could be developed. Should extend barrel life a bit.
Let us know what pans out.....
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What do you mean by extending barrel life a bit? Are you saying that using ball powder will extend barrel life?
I hunt South Texas