Herb in pa
Member
I wondered how the 5R rifling would treat a cast bullet. Rifle is a Remington 700 M24 clone that was a special order circa 2000. Stainless steel barrel and action with 1 in 11 1/4 twist designed to shoot the 175 Sierras. I swapped out the infamous J Lock bolt shroud, installed a Timney Trigger and added a Decelerator recoil pad. I loaded up 40 rounds of the RCBS 165 Sil sized @ .310 with some 2400 and Winchester Large Pistol primers. Results as follows @ 100 yards.
First 2 groups from the left used 20 grains of 2400..........first group went 1.510" with 9 in .962", second group went 1.366 with 9 in1.091. Groups 3 and 4 used 20.5 grains of 2400 group 3 went 1.192" with 9 in .698" while group 4 opened up (should have left the barrel cool a bit went 1.448" with 9 in .950". Intend to increase the next test using 22.5 and 23 grains. Groups @ 100 yards
First 2 groups from the left used 20 grains of 2400..........first group went 1.510" with 9 in .962", second group went 1.366 with 9 in1.091. Groups 3 and 4 used 20.5 grains of 2400 group 3 went 1.192" with 9 in .698" while group 4 opened up (should have left the barrel cool a bit went 1.448" with 9 in .950". Intend to increase the next test using 22.5 and 23 grains. Groups @ 100 yards
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