Wanted to load some 338 LM with 300 SMK's but needed to trim the brass, some by as much as .020. Didn't have a collet for hand trimmer so turned down a pilot and used a flat countersink mill in the Bridgeport. Actually works pretty well. Did 100 pieces in about 20 min.
Loads worked real well also, 88.2 gr. of RL-25 (thank you to those who posted this load!) with the 300 SMK yielded 2800 fps and printed 4" group at 600 yd. 30" shilen barrel 1 in 10 twist, Lawton 7000 action.
Loads worked real well also, 88.2 gr. of RL-25 (thank you to those who posted this load!) with the 300 SMK yielded 2800 fps and printed 4" group at 600 yd. 30" shilen barrel 1 in 10 twist, Lawton 7000 action.
