.38 S&W with 200g bullets, penetration tests
Update, 15 FEB 10, for heavy bullet fans.
TARGET: 6 water-filled jugs, backed by 2x12.
RANGE: approx 10 feet
GUNS: S&W Mod. 32-1 (2") and S&W 33-1 (4"). Chronography done from 4" bbl. approx 3" from muzzle.
a. BULLET: Lee GB mold 358430, LRN, 197-98g with 50-50 WW-Pb + 4 oz. tin per 20 lbs. alloy. Estimated BHN = 7-9. COL: 1.270"
b. POWDER: Win 231. Charge: 2.7g. My charge IS IN EXCESS OF RECOMMENDED LOAD FROM LYMAN 49th. USE A RELOADING MANUAL, CHRONO, etc. TO WORK UP YOUR OWN LOAD. In previous tests, I have noted that my lot of Win231 appears to be slower than average, which lot variation has been noted by Ed Harris as characteristic of this powder. Therefore, I start with recommended data and then work it up over the chronograph to vels similar to published velocities. Ed considers 700fps max for a 200g bullet in this gun.
CHRONO RESULTS (10-shot string): LO 624.4, HI 651.9, AVG 639.0, ES 27.54, SD 8.54.
1. 4" bbl. chrono'ed for this shot at 662.7fps on this shot. Bullet tracked straight thru 2 jugs, then began curving down and left. Broke extreme bottom of 5th jug and did not impact 6th jug. Bullet not recovered.
2. 2" bbl. chrono'ed for this shot at 624.2fps. Bullet tracked straight thru 2 jugs, began curving down & left. Came out extreme bottom left of jug #4 and failed to hit #5. Bullet not recovered.
I'll update tonight with photos of loaded 161g and 198g cartridges, as well as target patterning of chrono'ed strings. Also ME and free recoil calculations. Stay tuned! Times are tough for milk jugs. . .