357 mag 158 SWC 14.2 2400/WSP out of GP100 6" estimated velocity

[Wheelgunshooter]

Can someone give my a ballpark figure for a generic 158 SWC out of a GP100 6" with WSP and 14.2 of 2400? I'm thinking 1350-1400 range but that may be optimistic.

Wish I had a place to setup a chrono and take the guess work out of it.

[tazman]

1350-1400
My Alliant manual calls for 1500fps from a 5.6 inch barrel with 15.3 grains and my Lyman manual calls for 1300fps from a 4 inch barrel with 14.0 grains.

[Wheelgunshooter]

I normally hog hunt in Florida with a SRH 44mag but have been toying with taking the GP100 and want to make sure it is up to speed. I'm also testing some NOE 180 WFN but so far the accuracy is not there.

I got alarmed when I found a lot of load data on the ultra reliable WW that said something in the 1,200s. I also did not like the 1,300 from lyman with a fixed 4" test barrel, which could be faster than a wheel gun.

June 2012 Handloader has a 358156HP out of a GP100 6" with 14.5 2400 and CCI 500 @ 1,416.

[Bama]

Using the 358156 solid, powder coated with 13.8 gr 2400 I get 1260 fps from a 2" barrel Ruger security six through crono.

[Cherokee]

A few years ago I chronographed some 357 M cast bullets loads of 14.0 #2400 in several different guns:
358156, 158 GC - 10"=1467, 6"=1404, 8"=1434, another 6"=1359
358477, 150 PB - 10"=1477, 6"=1371, 8"=1458, another 6"=1336

[psweigle]

Should be very close to your estimate.

[Tatume]

I normally hog hunt in Florida with a SRH 44mag but have been toying with taking the GP100 and want to make sure it is up to speed. I'm also testing some NOE 180 WFN but so far the accuracy is not there.

I got alarmed when I found a lot of load data on the ultra reliable WW that said something in the 1,200s. I also did not like the 1,300 from lyman with a fixed 4" test barrel, which could be faster than a wheel gun.

June 2012 Handloader has a 358156HP out of a GP100 6" with 14.5 2400 and CCI 500 @ 1,416.

It doesn't much matter if you put it where it counts.

[robg]

In my win trapper 13.5 gr =1540fps (16 inch barrel )

[brassrat]

I have some at 15.5 gr for a Dan Wesson with a 158XTP.