09-25-2020, 08:27 PM
I got to take the 12" out again today to try some new loads.
All loads use 120 gr NBT, Lapua Brass and Rem 7.5 primers, 2.270" OCL. Average velocity of 10 shots and group sizes are for 5 shots through my Monster 12" barrel with 9" TBAC suppressor.
28.0 gr 8208 XBR - 2160 FPS, 0.75-0.80" groups
29.0 gr RL15 - 2071 FPS - 0.85-0.90" groups
31.5 gr CFE223 - 2,220 FPS - 1.00-1.25" groups
29.0 gr TAC - 2257 FPS - 0.60-1.05" groups
Overall I like the "feel" of the gas system best when running the 8208 and TAC loads, and but the TAC load was about 100 FPS faster. The RL15 load was smooth running but slow. Accuracy was plenty good enough for hunting with any of the loads and the POI was similar with all loads.
Hope some of you find this useful.
- PA
All loads use 120 gr NBT, Lapua Brass and Rem 7.5 primers, 2.270" OCL. Average velocity of 10 shots and group sizes are for 5 shots through my Monster 12" barrel with 9" TBAC suppressor.
28.0 gr 8208 XBR - 2160 FPS, 0.75-0.80" groups
29.0 gr RL15 - 2071 FPS - 0.85-0.90" groups
31.5 gr CFE223 - 2,220 FPS - 1.00-1.25" groups
29.0 gr TAC - 2257 FPS - 0.60-1.05" groups
Overall I like the "feel" of the gas system best when running the 8208 and TAC loads, and but the TAC load was about 100 FPS faster. The RL15 load was smooth running but slow. Accuracy was plenty good enough for hunting with any of the loads and the POI was similar with all loads.
Hope some of you find this useful.
- PA