357 mag rifle load

Toolfogie

While looking for 357 mag rifle loads I came across some really conflicting info.

Loadbooks One book One caliber...

page 10 - 158 gr SWC - 4.7 gr Unique - 1000 fps.

page 78 - 158 gr SWC - 6.0 gr Unique - 968 fps.

Am I missing something?

Which one sounds right to you guys?

Thanks

gregoryhart1

Is one load for rifle & the other for pistol?
GH1[:)]

Toolfogie

Thanks. You are of course correct.

dcs shooters

Use the 6.0gr. load for a rifle.
The accuracy should be better.
I load the same for my rifle and pistols.

Toolfogie

I would but these are lead bullets and I'm trying to keep them under 1000 fps.

Mobuck

I would think a slower powder would be better for the rifle loads. The bullet may actually be slowing down in the rifle's bore after the powder expends it's gas early in the firing sequence.

Rocky Raab

That's logical, but wrong. There is more - way more - than enough high pressure gas to keep accelerating a bullet down the entire length of any normal barrel length. If there's enough powder in a .22LR to outlast an 18" barrel, there's certainly enough in a .357 Mag round.

Find a load that propels a 158 lead SWC about 700 fps from a revolver and try that in your carbine. You ought to be just under 1,000 fps with the longer barrel and even more importantly, no cylinder gap. I'm guessing that something like 4.0 Bullseye, RedDot or Clays will do it for you.

gregoryhart1

What kind of lead bullets are you using, swaged or hard cast? I use 158 gr hard cast over 13.5 gr of AA#9 with no leading, and I'm pretty sure the velocity is quite a bit over 1000FPS.
GH1[:)]

Toolfogie

I'm using hard cast 125 gr, 158 gr, 180 gr.
I want to keep it under 1000 fps based on advice received on this forum.
Thanks