Several weeks ago I made a post about my 257 classic going 3,050 fps with 45.0 gr of H4350 & patterning rather than grouping. I resolved the grouping problem by cleaning the bore. Today I finally got back to the range with some book loads of 100 & 117 gr bullets. The same 117 Sierra 117 pro hunters with 42.5 gr of IMR 4350 clocked 2891,2883,&2875. I also shot the old load & was just over 3,000 fps. The IMR grouped 3/4" which is fine with me. I shot some 117 Hornadys with RL19 but either the chrono didn't work or I did a poor job of reloading..2965,2900,& 2794. This yielded a 1.5" group. 100 Hornadys with 45.0 gr of IMR 4350 yielded 2994,2974, & 3035 with a 1.5" group. This barrel is some what faster than the lilja 3 grove in my custom 257 but I think I'm in safe ranges.
Posts: 1125 | Location: near atlanta,ga,usa | Registered: 26 September 2001