Geissele Cut Rifled SPR Build and Barrel Evaluation. (Part 4 (Load Development 28MAY25) Update!!!
- By B Man
- Semi-Automatic Rifles
- 94 Replies
24.2-24.4 gr TAC pushing a 77 smk has been money in all my rifles. They all share 24.4, LC brass, cci #41 with 77 SMK’s and all shoot that load extremely well in 40-95* weather.
Those speeds though are crazy! My 20” barrels only run 2750
Those speeds though are crazy! My 20” barrels only run 2750