New Posts New Posts RSS Feed - Loading .357 Mag. questions.
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Check GunBroker.com for SWFA's No Reserve and No Minimum bid firearm auctions.

Loading .357 Mag. questions.

 Post Reply Post Reply   Topic Search Topic Search  Topic Options Topic Options
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/31/2017 at 09:49
BobC View Drop Down
Optics Apprentice
Optics Apprentice
Avatar

Joined: January/14/2010
Location: Maine
Status: Offline
Points: 168
I've been loading rifle ammo, for years but this will be my first go at reloading handgun ammo. I have Starline .357 brass and Hunters Supply 158 grain semi wad cutter hard cast bullets. I need a recommendation for powder and primers. These will be fired mainly out of a 6" Ruger GP100 and maybe once or twice out of a 21/4" SP101. I'm looking for best accuracy. 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: May/31/2017 at 10:01
Longhunter View Drop Down
Optics Journeyman
Optics Journeyman
Avatar

Joined: February/02/2006
Status: Offline
Points: 426
For target loads, I've had good luck with Trail Boss and Winchester primers in Starline .357 brass.

The nice thing about Trail Boss is that it's designed to be bulky.  
This makes it nearly impossible to double-charge a case (unlike Bullseye, for example).

I'm sure some of the other forum members can advise you on hunting and defense loads.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/20/2017 at 12:32
Lockjaw View Drop Down
Optics Apprentice
Optics Apprentice


Joined: May/17/2016
Location: Chelsea
Status: Offline
Points: 228
I used regular winchester primers, I think small rifle, and bullseye powder also. I like it because you don't use much per cartridge, and it would be obvious if you double charged it. 

I think 38 special +p was only 4.5 grains. 357 perhaps a grain more. I'd have to go hunt to find out. I used hornady 125 XTP bullets. 

I have never shot any of it, this was my "I'm fixing to move, Obama is President, and I need to load every single piece of brass I have" ammo. 

LocoLoco
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/20/2017 at 12:41
supertool73 View Drop Down
Optics God
Optics God
Avatar
Superstool

Joined: January/03/2008
Location: Utah
Status: Offline
Points: 10220
I like heavy loads of h110 and 158 grain or 140 grain lever evolution. 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/21/2017 at 09:31
BeltFed View Drop Down
Optics God
Optics God
Avatar

Joined: February/12/2008
Location: Ky
Status: Offline
Points: 17203
I liked Winchester 296, Winchester brass, and Winchester small pistol magnum primers for my jacketed bullet loads. Other than 19.2 grains for Speer, and Sierra 125 grain bullets I can't remember the exact charge. I used 2400 (try finding that today) for my cast bullets, but it would tend to lead the barrel if you got your loads a little hot.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/21/2017 at 15:43
3_tens View Drop Down
Optics Jedi Knight
Optics Jedi Knight
Avatar

Joined: January/08/2007
Location: Oklahoma
Status: Offline
Points: 7396
I still have a little over 4 lbs of Hercules 2400. Can you guess its age? Alliant bought out Hercules and kept the powers. I have always used their powder in 357 and 38's Try the BE-86. It is similar to the 2400 but without as much flash.


Edited by 3_tens - September/21/2017 at 18:17
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: September/23/2017 at 19:52
Urimaginaryfrnd View Drop Down
MODERATOR
MODERATOR
Avatar
Resident Redneck

Joined: June/20/2005
Location: Iowa
Status: Offline
Points: 14175
I have always used Unique for .38 and often for .357 sometimes 2400 for .357 particularly with a long barrel.  Powder charge recomendations vary greatly by which reloading manual you use so look at a couple of them or buy one of the reloading manuals that is caliber specific.  The brand of brass does not really matter as much as the brand of bullet.  I starrted with a Speer and a Sierra manual and now have Barnes and Horniday also.  How you measure the powder charge makes a difference too because if you are weighing each charge to exact specs you can get close to max but if you use a progressive press you need to allow for some variatin in charge and not be too close to max. 
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Similar Threads: "Loading .357 Mag. questions."
Subject Author Forum Replies Last Post
.357 Mag for Deer swtucker General Hunting 14
Mild 44 Mag Hunting Load G Dubya P Reloading & Ballistics 19
Chrono 7mm Mag Loads? Trays 7940 Reloading & Ballistics 39
Best factory load for 7 MAG ??? bricat Reloading & Ballistics 8 7/27/2007 10:39:41 AM
Ever want a .357 Mag in a 1911? Skylar McMahon Firearms 17
.357 Magnum Rifle help Rich M Rifle Scopes 9
Scope for Marlin 1894C .357 magnum caliber Chem-man Rifle Scopes 4
Burris Short Mag Question Dock Rifle Scopes 2 5/14/2007 6:54:58 PM
300 Win Mag question the lone gunman Tactical Scopes 10 10/18/2006 6:30:38 PM
Scope questions on mag greywolf Rifle Scopes 1 6/27/2005 11:59:44 PM


This page was generated in 0.406 seconds.