Have a couple of 250AI`s, 10 twist comp. gun and 10 twist sportter, 24 on the sportter, 26 on the tube gun. I`m going by memory here so could be faulty, but think Lutz`s info on .25grn. bullets 110 and over start to loose ballistic efficiency. Even Bergers 115 grn, which I shoot a lot of, is marginally stable, lowering BC. Talking with Swampy, JLK`s before he passed also suggested that, so stayed at 108 to 110 gns. From what I understand, BIB does the same.
Like the .25, so will keep an eye out...gonna follow his progress.
