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I have gotten the 124 grain Hammer Hunters to shoot very well in a 260AI with an 8 twist. I will try the 131’s but they strongly recommend a 7.5 for those. I’ve been ordering the 7.5 barrel for any new builds.One way to do it is to go on on the Hammer bullets web site and look
up the "Hunters". Each bullet has a break down and minimum required
twist rates. They also have an open forum to engage in, and load data.
You also have a buying option to just get a few samples.......Success wise ??
I'm using them but for another reason.
I ran those thru my calculator and they are on the bleeding edge ofI have gotten the 124 grain Hammer Hunters to shoot very well in a 260AI with an 8 twist. I will try the 131’s but they strongly recommend a 7.5 for those. I’ve been ordering the 7.5 barrel for any new builds.
With the 124gr in an 8 twist they are running 3050 to 3150 depending on the rifle. The 131’s in a 7.5T ran 2980 in the one I just finished. To get there you need to bush the bolt in a Remington 700.I ran those thru my calculator and they are on the bleeding edge of
stability with the 8 twisters. And I assumed you could safely hit 2800.
