Mountain Molds
Range Report 7/19/2004

17.9 H110, 162 gr. deep-seated truncated cone, lube #1   1250 fps, 79 ES, 4.6".   Quickload estimate 1250 fps at 34,665 psi.

18.2 H110, 158 gr. deep-seated ogival nose, lube #1   1255 fps, 86 ES, 6.2".   Quickload estimate 1262 fps at 34,374 psi.

18.7 H110, 160 gr. 35_FP_160_snub, lube #1   1255 fps, 66 ES, 6.3".   Quickload estimate 1250 fps at 34,040 psi.

18.7 H110, 160 gr. 35_FP_160_snub, lube #2   1260 fps, 40 ES, 4.6".

18.7 H110, 160 gr. 35_FP_160_snub, Rooster HVR   1271 fps, 36 ES, 5.8".   I lost one string of data for Rooster so that may have skewed the results.   On previous occasions Rooster's average ES was about 60 fps.

Conclusions   Normally I prefer ogival noses because the ogive helps to guide the bullet into the rifling, but in this case the TC forces more weight into the case, which was the general idea.   It shot as well as anything, so I'll make it my standard load for now.   There are other experiments I would like to do with the 357 but I need to qive it a break so I can move on to the 44.   My experimental lubes did "OK", with only the usual hint of grey near the muzzle, but Rooster left the barrel perfectly clean and gave higher velocities.   It's hard to beat Rooster for gas sealing.


These experiments were basically the same load that shot well last week with minor variations in diameter, seating depth, and powder charge.

62 gr. RL 19, 0.312", type #1   average 3.96", 2750 fps, 20 ES.

61.5 gr. RL 19, 0.312", type #1   average 4.42", 2708 fps, 22 ES.

61.5 gr. RL 19, 0.312", type #1, 165 gr. hollow point   2.89", 2737 fps, 48 ES.

61.5 gr. RL 19, 0.3107", type #2   4.33", 2727 fps, 31 ES.

61.5 gr. RL 19, 0.312", type #2   average 3.57", 2717 fps, 31 ES.

Conclusions   What went wrong?   Somewhere along the way I switched from CCI 200 to Federal 210 primers.   I don't think that made a difference but now I'll have to do a primer comparison to be sure.   Some of last week's loads engraved so hard that I had to pound the bolt closed with my fist, so this week I seated about 0.010" deeper.   I did experiment with scraping the lube out of some grooves for some strings, but that didn't seem to make a difference.   The hollowpoint's velocity fell far short of the 2785 fps predicted by Quickload.