My .338 shoots 225's at a chronied 2910 FPS at 6500 feet, with a 24" barrel and a muzzle brake. I would think a little shorter barrel would put it down in the 2800 range, which is a perfect speed to work with BDC type scopes. I think the 225 grain bullet in a .338 is the best combo for elk, a great blend of speed an power. Kind of a .30-06 on steroids.How would these cartridges act in terms of efficiency in a shorter (20-23") barrel?
I'd stick to the 225's, and the Accubond's shot very well in mine. The best group with these measured .428"What about shooting a 250 gr accubond from the 338?
[img width=600 height=400]http://i234.photobucket.com/albums/ee261/ckink45/hunting/100_1813.jpg[/img]
I did have three first hand and one reported instance of tips breaking off in the magazine with Accubonds. The bullets that I saw problems with were .338-225gr (1), .308-180 gr (1), 7mm-140gr (2). I have never shot an animal with the NAB's in .338, but my wife killed her fifth antelope with the 7mm-140 last Thursday and the results were outstanding.
All of that being said, I feel that the .308 caliber is terribly deficient in the BC category. I would pick the 338 hands down for long range elk.
My .02
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