The three 24 round magazines I have measure 10,55 – 10,7 mm / 0,415- 0,421 and the big stick measures 9,7 mm / 0,382 in. This measure is at the end of the feed lips, before the start to curve down, towards the follower.
Can the ammo have any affect?
OAL: 30,88 mm / 1,216 in.
The crimp is decent. Diameter at "case top": 9,63 mm / 0,379 in.
Only new Starline 38SC brass.
Bullet: 124 RN, Elliptical ogive (not the same as in the picutures, which is Berry's RN)