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Years ago when I began seeking HV with cast bullets I set a bit more stringent accuracy (precision) goal that goodsteel mentions. My precision goal was 2 moa capability with 10 shots at 100 yards while maintaining linear expansion at longer ranges out to 300 yards and possibly to 400 yards. By “high velocity” I also set the goal at 2500+ fps to as high as could be attained while maintaining the precision goal.
Subsequent to much HV testing of numerous cast bullets designs in 10, 12, 14 and 16″ twist rifles I have found 10″ twist rifles (.308W and 30-06) are probably not going to meet those goals. With 12″ twist rifles having barrels of 24+” in length the goal is easily met with well designed and cast bullets for HV. On the other hand, with 14 and 16″ twist barrels of 26″ length 2500+ fps with much less than 2 moa precision capability is very easy to attain with numerous new and old cast bullet designs. For example the 311041 shoots extremely well at 2500+ fps out of Dawn. Not exactly a bullet designed for HV yet excellently suitable for hunting. Given a velocity of 2500 fps the 311041 will retain close to 1600 fps at 300 yards making it a very effecting cast bullet hunting rifle.