Had my first custom rifle built (Defiance action, Krieger barrel, etc) in 7mm PRC. Barrel is 26” with comp, in a 1:8.5”
twist. Currently working up loads shooting both 162 ELD-M’s and 180 ELD-M’s with H1000 powder. Seems like the 1:8.5” twist may not be enough for the 180’s, as the groups seem to start to open up at about 2900 fps. Thoughts on the twist rate vs a 1:8” twist? Anyone with same or different experiences?
twist. Currently working up loads shooting both 162 ELD-M’s and 180 ELD-M’s with H1000 powder. Seems like the 1:8.5” twist may not be enough for the 180’s, as the groups seem to start to open up at about 2900 fps. Thoughts on the twist rate vs a 1:8” twist? Anyone with same or different experiences?
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