Reeder Custom Guns - S&W 340 M&P .357 Magnum

Jim Taylor
S&W 340 M&P .357 Magnum
Tuesday, July 14, 2026, 11:12

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Been carrying this gun for quite a long time. My heavy load is the 125 gr. Speer over 20 gr. WC820. Out of the 1.75" barrel it will do a little over 1340 fps. Recoil is fierce.

I practice with a 160 gr. cast bullet and 3.0 gr. Bullseye in .38 Special cases. These do about 600 fps and are quite comfortable.

My right hand got boogered up in the crash and my thumb and first finger were completely numb. Feeling is slowly returning but movement is stiff. I most likely will carry .38 Special loads in the 340 as I don't think I could hold onto it very well with the heavy loads. Gonna do more left-handed work.

S&W 340 M&P .357 Magnum - Jim Taylor, 2026-07-14, 11:12
- Notice the 125 gr. 150+ fps gain with Viht N110? - WB, 2026-07-15, 13:23
- That's blistering performance for a snubby - WB, 2026-07-14, 14:42
  - I have found the batch of WC820 I have - Blake, 2026-07-14, 16:53
    - I think there were 2-3 different production runs of W820. - Sean Harper, 2026-07-15, 04:42
      - I tried that and it was still to hot (nm) - Blake, 2026-07-15, 13:58
  - The do-all sp101 - Dave H., 2026-07-14, 16:51
  - Strips. At least in summer. Easiier to hide. (nm) - Jim Taylor, 2026-07-14, 15:16