Chronograph Data - 357 Magnum reloads and 38 Special +P factory

[Hi-Speed]

Date: June 15, 2022
Place: Douglas County NV

Handgun: Ruger Blackhawk 357 Magnum 4 5/8”
10 shot strings (had no readings avg about 7 rds recorded per load)

357 Magnum Reloads:

Lyman 358477 (155 gr)
6.5 grs Unique
MV 1,051 fps
ES 45

Lyman 358429 (170 gr)
6.0 grs Unique
MV 958 fps
ES 71
Note: 1.553” OAL

Lyman 358439 HP (160gr)
11.0 grs Alliant 2400
MV 1,176 fps
ES 84
Note: 1.553” OAL

Speer 158 gr LSWCHP
6.0 grs Unique
MV 942 fps
ES 62

38-44 Reload:

Lyman 358429 (170 gr)
11.0 grs 2400
MV 1,171 fps
ES 42
1.532” OAL

Remington 38 Special +P 158 gr LHP (2018 manufacture)
MV 904 fps
ES 50

Double Tap 38 Special + P 158 gr Cast SWC (2020 manufacture)
MV 906 fps
ES 42

Was expecting more from both Remington and Double Tap 158 gr 38 Spl +P loads but then again they were tested out of a 357 magnum with its longer chambers…actual fps in a 38 Special chambered revolver may likely be 25 fps faster.

[pworley1]

The remington +p looks to be right on what the box predicts. The double tap do look to be a little below the predicted velocity.

[44MAG#1]

I posted some Chrono data on the 44 Mag using 2400 quite some time ago and it was picked to pieces by the experts. I wonder if yours will be?

[Walks]

Those 1st 2 loads have been standard .357Mag Loads in My Family since before I was born, 1954. Ditto for the .38/44 load for S&W M27, Colt OP & SAA. Sent more of these loads down range then I can count.

Thank You for reminding Me of the velocities that I was getting.

[Hi-Speed]

I posted some Chrono data on the 44 Mag using 2400 quite some time ago and it was picked to pieces by the experts. I wonder if yours will be?

I get tighter spreads when using 2400 in 38-44 loads and using the 358429 loaded “short” ( crimped over front edge of first driving band) in 357 cases. I have some new data from today’s chrono session using the 2400 and the 158 gr SWC (Magma mold) BNH 12 in 357 cases and will post under separate thread.