i have a 260rem tube on my AI. it has a 30" barrel and i am getting over 2900 with the 142 smk's. this is shagging the cases though so i intend to back off a little, and am moving from 4831sc to rel 19 instead.
i have not had thid baby past 600yet, but it was holding it's own against the 6.5-284 guys at the last competition over 300, 500 and 600yards.
i went the 243lapua route and expanded up and neck turned. i have a 290neck chamber and have had no donut problems at all. you have to go a fair ways into the shoulder to do avoif the donut appearing though.
my advice would be a stragiht 260 for what you want to use it for.....
After reading Shawns post again, and considering what I expect from this build, I'm going with the standard 260rem.
I'll send Pac-nor a dummy round so they can throat it at a length that fits my mag. With this I should have a relativly mild recoil 800yrd rig. [img]/ubbthreads/images/graemlins/smile.gif[/img]
Sorry? not really a hijacking this thread is over 4 years old.
I ended up building a 260ai. that rifle has killed 2 deer over 600, 2 over 500 and a half a dozen or more over 300. all with 140 a-max at 2920 fps. None of the animals needed a second bullet. If I thought I was capable of one shot kills at 800 yards with that gun I would be confident that the bullet would do the job.
I barreled up Ryans handgun today and installed the Muscle brake. That damm barreled action weights as much as my 7rum on a 28" palma contour.
It's a pretty stiff rig, I think she's gonna drive tacks for sure.