Powder recommendations for .357 magnum [Archive] - Glock Talk

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Glock21sf-miami
04-13-2010, 13:59
Fellas,

I already loaded up some .38 and now I want to play a little with .357 magnum loads. I have W231 (for .38 and .45) and WST (for .45).
I would like to create some mild to hot loads for .357 and have some 125 gr XTPs and some 110 gr XTPs that came free when buying the dies.

I am also getting ready to buy a case of bullets for .38 and .357, I would like to know which flavor (grs) I should buy so I can use them for both loads...

Any suggestions?

mitchshrader
04-13-2010, 14:08
There are heavy bullet loads worked up for 158/180 grain with Lil Gun and 2400 posted online.. various other powders but I don't know how many.

MrVvrroomm
04-13-2010, 14:15
For full power loads I've used Win296. Blue Dot as long as you heed their warning on using with 125 grain projectiles.

dudel
04-13-2010, 18:11
Partial to H110 for 357Mag/Max. It's what I started with, and it's worked well all these years. There may be better powders out there; but I'm not ready to try a pound of stuff just to have it sit on the shelf. BTW, I use the H110 with jacketed projectiles.

Hydraulicman
04-13-2010, 18:41
i've loaded 357 with 2400 and w296

I tend to prefer W296 but i meter the powder with my RCBS uni-flow instead of my dillon measure( gets powder all over the place)

I load my .357 to magnum loads

if i want lite load i use .38 brass

byf43
04-13-2010, 18:56
7.2 grains of Unique with a 158 gr JHP for an accurate, 'pooty-tat' load, and a judicious load of Alliant 2400 for 125 and 158 gr JHP/JSP loads.

I've never been a fan of H-110 or W-296.
The pressure curve is instantaneous, like a Top Fuel Dragster. 0-300 mph in a heartbeat.
Nope. Not for me.

fredj338
04-13-2010, 19:10
H110, W296, 2400, all great choice for full power 357mag loads w/ lighter bullets. Unfortuantely, none fo those are really good for medioum vel 110-125grJHP loads. Think medium burners, like Unique, WSF or HS6, maybe Longshot too. BlueDot also works, but again better for max loads, not midrange. Any of those will get your 125grJHP to 1350fps (4"bbl) or so w/o bending anything.

albyihat
04-13-2010, 19:52
2400 is great but blue dot and unique are also good.
17gr of 2400 for a 125gr bullet using a mag primer ( a regular primer can be used as well if shooting out of 6" or larger brl. for shorter brl. i use mag primer as i see less unburnt powder) this is a almost full power load adding more powder did not result in much more fps. at least for me. Have fun.

Glock21sf-miami
04-13-2010, 20:12
Great info! Lyman lists Unique as an option when loading with 110, 125 and 158 gr bullets. What I like about Unique is that seems to be very versatile and works with 45 acp as well.

fredj338
04-14-2010, 13:37
Great info! Lyman lists Unique as an option when loading with 110, 125 and 158 gr bullets. What I like about Unique is that seems to be very versatile and works with 45 acp as well.

Yes it does, why it's been around for like 100yrs (although it has been improved). WSF is nearly identical in burn rate in most calibers & meters a bit better.

dwhite53
04-14-2010, 14:07
I've been using AA#7 with 158 grain cast SWC's with pretty good results. I bought it because I couldn't find BlueDot. It also works well in the 40 S&W. Doesn't seem to have the flash BlueDot is known for.

All the Best,
D. White

Ahmid
04-14-2010, 14:11
Don't forget AA number 9....

Zombie Steve
04-14-2010, 14:15
Unique for lower end, 2400 to realize the potential of the round.

glocknick
04-14-2010, 16:05
i like winchester 296. you can make some rowdy rounds with them. the only other powder i have used in 357 is hp38. it was ok but if you want medium to full power go with 296.

fredj338
04-14-2010, 17:55
i like winchester 296. you can make some rowdy rounds with them. the only other powder i have used in 357 is hp38. it was ok but if you want medium to full power go with 296.
W296/H110 are NOT recommended for downloading, so they are full power choices only & not very good for light bullets in any magnum IMO.

byf43
04-14-2010, 18:49
W296/H110 are NOT recommended for downloading, so they are full power choices only & not very good for light bullets in any magnum IMO.


Great post, fred.

That is the reason I don't like W-296 or H-110.
Full power only. No room for margin. Wipe open throttle or nothing.

A lot of people don't like 2400 because they say "It's dirty."
Well, I clean my firearms after each shooting session, so, I don't care if it's dirty.
(And 'clean shooting' is a relative term, anyway!):supergrin:

dbarry
04-14-2010, 19:51
For my "what the heck is that guy shooting" loads in the 357, 2400 is my vote. Very fun with light bullets and lots-o-powder. Huge fireball out the end of the barrel. Big fun!

dbarry
04-14-2010, 19:53
btw: with the full power loads, I dont notice the gun being any more dirty than with any other powder. As you back down on the powder, it does get dirty, but then again so do most other powders.

ilgunguygt
04-14-2010, 21:06
I prefer 2400 in my hot 45 colt and 357 magnum loads.

bambikilr
04-14-2010, 21:06
H110 is what is use with 158 & 140 grain bullets in .357 & have for over 20 years...7.9gr of HP38 is good with your 125gr Hornady...good luck, have fun & be safe

Glock21sf-miami
04-15-2010, 12:09
I'm thinking 2400 might just be the ticket. Lyman lists it as the most accurate for .357 mag in most jacketed bullet weights.

fredj338
04-15-2010, 13:11
I'm thinking 2400 might just be the ticket. Lyman lists it as the most accurate for .357 mag in most jacketed bullet weights.

Much better choice than H110/W296, but again, getting downnear midrange, it will get dirty, leave unburned powder. What vel range are you trying to reach? Unqiue or WSF will get you 1300fps in a 4"bbl & burn completely w/ good accuracy. Beyond that, 2400 will work well.

DEADLYACCURATE
04-15-2010, 13:14
110 grain JHP 20.4 grain 2400
125 grain JHP 17.7 grain 2400
140 grain JHP 16.6 grain 2400
158 grain JHP 14.9 grain 2400

Max Loads!!! Do Not Exceed!!!

ilgunguygt
04-15-2010, 15:01
110 grain JHP 20.4 grain 2400
125 grain JHP 17.7 grain 2400
140 grain JHP 16.6 grain 2400
158 grain JHP 14.9 grain 2400

Max Loads!!! Do Not Exceed!!!
I load 125gr JHP with 16 grains of 2400 and could not imagine the need to go any higher, much less to 17.7gr! When I emailed Alliant to ask questions about 125gr JHPs with 2400 the tech sent a reply stating to load to a max of 16.5, in spite of what is published.

As far as 158gr bullets, I load a LSWC over 14.2gr of 2400 and it is more than a handful.

Glock21sf-miami
04-15-2010, 16:14
Much better choice than H110/W296, but again, getting downnear midrange, it will get dirty, leave unburned powder. What vel range are you trying to reach? Unqiue or WSF will get you 1300fps in a 4"bbl & burn completely w/ good accuracy. Beyond that, 2400 will work well.

Thanks Fred, your posts are very helpful. I actually do not have a target velocity yet (I do not have a chrono). My objective is to be able to train with loads that would be similar to my SD ammo. I will be shooting out of a 2.25" SP101.
Right now I am carrying Double Tap 125 gr bonded defense and it is a pretty hot load. It is pretty accurate too... However, forget about quick follow up shots....

I mostly carry my G30 because I am much more accurate with it and I can place follow up shots quickly where I want them. I would like to have the same proficiency with my SP101.

I have some 231 that I can use for .38 and low end .357... So I have to decide between Unique for medium powered loads or 2400 for hotter .357 loads...

fredj338
04-15-2010, 17:36
I have some 231 that I can use for .38 and low end .357... So I have to decide between Unique for medium powered loads or 2400 for hotter .357 loads...
SOunds like a plan. I tried the full power 125gr loads in my sp01, they shoot way too low, same for the 135grGDSB. I like the 145grWSTHP & a 158grLSWC @ 1000fps is close enough to practice w/, also shoots closer to POA.:supergrin: