12.5 grs of 2400 too hot in .357 magnum

[robbt]

hello all , I recently found a box of .357 magnums I loaded

some time ago with 12.5 grs of 2400 using Lyman 357446 ,

I plan on shooting this load in a model 19 and a couple of other

medium non n frame .357 revolvers is load too hot ??

please post, many thanks

 

[WrongHanded]

What's the bullet weight?

 

[sisyphus]

12.5 of 2400 should be fine out of a pistol, just a little on the slow side for caliber

 

[sisyphus]

but that's me thinking for 158gr which is all I use in 357

 

[jmorris]

What's the bullet weight?

It is going to depend on the alloy he uses but it’s a 162 gn SWC mold.

 

[WrongHanded]

It is going to depend on the alloy he uses but it’s a 162 gn SWC mold.

Thanks!

Sounds like 12.5gr is should be fine. Just a little dirty.

 

[robbt]

hi guys, yes 162 gr bullet

 

[ArchAngelCD]

I have safely loaded 14.5gr 2400 with that weight fast bullet. Go slow to get there.

 

[forrest r]

Nice, don't see a lot of people using the old bullet designs. That 358466 is an interesting history behind it.
http://www.lasc.us/Fryxell38SWC.htm

14.0gr gr of 2400 has been the "gold standard" for decades.

I've been lucky enough to own all the molds in that article/link above and did a lot of head to head testing in several different firearms & bbl lengths over the years. The cramer #26 hp is still my favorite of all those older designs.

 

[243winxb]

12.5 grs of 2400 using Lyman 357446 ,

Pressure may be a little higher with mag primers, but ok. 163 gr. Cast.

 

[mdi]

I checked my Lyman 49th and your load seems a bit on the light side. Did you consult your reloading manual?

 

[robbt]

hi yes a older Lyman manuel

 

[GeoDudeFlorida]

The range for 2400 in that weight for cast lead in Lyman's 44th (which I have saved as a PDF) is 11.0-15.0 for a 158gr. LRN so I think you're safe. It looks like you hit the middle of the range for that weight. That exact bullet ought to be in the Lyman's 45th as a new entry. I don't have the 45th Ed. online and I'm working today in the office so I can't check. Sorry. You'll have to let us know how it shoots.

 

[robbt]

hi Geo, if I remember it had a nice kick and alot of noise, been some time since I had time to shoot.
many thanks, stay well, robbt

 

[Steve51]

I use 14.5 gr. of 2400 but that is with 158 gr. JHP bullets. To be safe, lead bullets would probably use less powder than jacketed bullets.

 

[.38 Special]

My more-or-less standard load for the Model 19 is a 158 grain swcgc with 13 grains of 2400.

 

[Walkalong]

use 14.5 gr. of 2400 but that is with 158 gr. JHP bullets

Me too, coated as well, shoots great.

 

[Constrictor]

My load is 13.5g 2400 for 158g bullet.

 

[Sarge7402]

hello all , I recently found a box of .357 magnums I loaded

some time ago with 12.5 grs of 2400 using Lyman 357446 ,

I plan on shooting this load in a model 19 and a couple of other

medium non n frame .357 revolvers is load too hot ??

please post, many thanks

My Lyman 42 dated 1960 says that a suggested load of 2400 with that bullet is 12.0 grains with a max of 15.0.

Don't think my Speer manual would go that high.

 

[Walkalong]

For me with 158s, plated. coated, jacketed, everything just came together at 14.5 Grs 2400, started at 13.0 and worked up.

 

[The Happy Kaboomer]

My standard 357 load is my 168 gr cast swc pushed by 13.5 grs of #2400. Works in my rifle and handguns..........And has killed deer.

 

[bullseye308]

I went through 2# of 2400 14.5 grains at a time with a 158 lead swc and had no problems. My regular plinking load is 5.0 grains of bullseye with the same bullet.

 

[joneb]

I have used 14.2gr of 2400 with spp and spm primers in a 2.75" Ruger Sec. Six with 158gr jacketed bullets and that worked well, I prefer Accurate #9 for those bullets.
I have tried 10-13gr of 2400 for 158gr plated, and lead @ 12 bhn, with ok results but for those bullets but I prefer a faster powder.