I have 16" 1:9 twist and a 20" 1:9 twist 6.5 Grendels. I have shot the 16" out to 800 yards and the 20" out to 1000. I was using 123 grain A-Max factory in the 16" and 123 grain Nosler CC in a hand load in the 20". I think you'll be OK but the only way you'll know for sure is to try it. I'd be curious if the 1:9 could stabalize the 129-130 grain 6.5 bullets.
My Grendel build in process
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Originally posted by Nick View PostI think so. For hunting purposes it was a must. I was a bit nervous about going to 18 with a 1:9 twist but I was very pleased with this 100 yard grouping, hoping to stretch it out soon and see what I get at 300 or so.
Anyone familiar with this twist on an 18"? Reason I ask is because I'm going to be taking a long range shooting training course soon and would this be able to shoot to 1000 or would I be better off learning long distance shooting with something else?
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Here they are.
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