STD. Pistol primer vs. Magnum in 357

STD. Pistol primer vs. Magnum in 357

This is a discussion on STD. Pistol primer vs. Magnum in 357 within the Reloading forums, part of the Defensive Ammunition & Ballistics category; when do use standard pistol primers?? and when should you use magnum pistol primers in a .357? In what i have been researching, some say ...

Page 1 of 2 12 LastLast
Results 1 to 15 of 17
  1. #1
    New Member Array mandel7172's Avatar
    Join Date
    Jul 2008
    Location
    MIAMI, FL
    Posts
    7

    STD. Pistol primer vs. Magnum in 357

    when do use standard pistol primers?? and when should you use magnum pistol primers in a .357? In what i have been researching, some say always use magnum primers in the .357, some say none, and some say it depends on the powder used? Can anyone shed any light on this subject? thanks in advance for the info--AL


  2. #2
    Distinguished Member Array coffeecup's Avatar
    Join Date
    Sep 2007
    Location
    Cadiz,Ky
    Posts
    1,252
    My rule of thumb has always been to use standard primers for quicker burning powders and target loadings. And to use mag primers for "full house" mag loads with slower powders due to the possibility of incomplete ignition. Or hangfire. Dont need that when faced with a BG.

  3. #3
    Senior Moderator
    Array HotGuns's Avatar
    Join Date
    Dec 2004
    Location
    Arkansas
    Posts
    14,915
    Use what the reloading book says to use.
    Some data is with standard primers and some is with magnum.

    Just do what the book says.
    I would rather stand against the cannons of the wicked than against the prayers of the righteous.


    AR. CHL Instr. 07/02 FFL
    Like custom guns and stuff? Check this out...
    http://bobbailey1959.wordpress.com/

  4. #4
    VIP Member Array farronwolf's Avatar
    Join Date
    Aug 2006
    Location
    Texas
    Posts
    4,788
    ^ +1, yep, do what the book says.
    Just remember that shot placement is much more important with what you carry than how big a bang you get with each trigger pull.
    www.ddchl.com
    Texas CHL Instructor
    Texas Hunter Education Instructor
    NRA Instructor

  5. #5
    VIP Member Array dukalmighty's Avatar
    Join Date
    Feb 2008
    Location
    texas
    Posts
    15,179
    I have used magnum primers when it was what i had and since my loads are usually just below or right at start loads i've never had a problem but you should go by load data to be really safe,as far as SD even tho my loads have gone bang everytime i pulled the trigger in the last year I only carry factory SD ammo.If for no other reason I don't want some DA trying to say I loaded a more powerfull load that was intended to kill
    "Outside of the killings, Washington has one of the lowest crime rates in the country,"
    --Mayor Marion Barry, Washington , DC .

  6. #6
    Senior Member Array Juggernaut's Avatar
    Join Date
    Apr 2007
    Location
    Virginia, USA
    Posts
    569
    Quote Originally Posted by farronwolf View Post
    ^ +1, yep, do what the book says.
    Another +1 for "read the manual". IIRC, I think speer 13 shows mag primers for certain powders and regular pistol for others.
    Vis consili expers mole ruit sua.
    -Horace

  7. #7
    New Member Array mandel7172's Avatar
    Join Date
    Jul 2008
    Location
    MIAMI, FL
    Posts
    7
    thanks to all for the info on this subject -- i follow what the book says -- but that is where the confusion seems to lie -- you read one book and then another book; same bullet weight, same powder type, same powder weight (more or less), one book says to use small pistol, and another book says a magnum primer? that's when i went ugh??? (lol)

  8. #8
    Senior Moderator
    Array HotGuns's Avatar
    Join Date
    Dec 2004
    Location
    Arkansas
    Posts
    14,915
    Yea, they're all different , but you have to remember that they are using different guns to test their loads in.
    I would rather stand against the cannons of the wicked than against the prayers of the righteous.


    AR. CHL Instr. 07/02 FFL
    Like custom guns and stuff? Check this out...
    http://bobbailey1959.wordpress.com/

  9. #9
    New Member Array mandel7172's Avatar
    Join Date
    Jul 2008
    Location
    MIAMI, FL
    Posts
    7
    so? i guess i need to just stick with that paticular recipe and see what works best in my 686.. thanks

  10. #10
    Senior Moderator
    Array HotGuns's Avatar
    Join Date
    Dec 2004
    Location
    Arkansas
    Posts
    14,915
    The slower burning pistol powders generally use magnum primers. You see this alot on H110, W296,and AA#9 in barn bunring loads for .357and .44 Mag. All of these powders use a good load density.

    Your faster range and medium burn rates usally dont require magnum primers. As long as you use the load book reccomendations you'll be OK.

    Some pistols shoot better with full house loads. I have a Dan Wesson .357 that loves the max loads, but is just so-so with mid range loads. You just have to experiment to find what works best, but thats part of the fun of it.
    Last edited by HotGuns; September 9th, 2008 at 06:55 AM.
    I would rather stand against the cannons of the wicked than against the prayers of the righteous.


    AR. CHL Instr. 07/02 FFL
    Like custom guns and stuff? Check this out...
    http://bobbailey1959.wordpress.com/

  11. #11
    Distinguished Member Array coffeecup's Avatar
    Join Date
    Sep 2007
    Location
    Cadiz,Ky
    Posts
    1,252
    [QUOTE=HotGuns;840516]The faster burning pistol powders generally use magnum primers. You see this alot on H110, W296,and AA#9 in barn bunring loads for .357and .44 Mag. All of these powders use a good load density.

    Ya might want to check out your information there HotGuns. Those are SLOW burning powders in pistol loads. As are a few others--4227 and Blue Dot to name a couple. Fast burning powders are Bullseye,Red Dot, 700X and so on. My personal favorite,Unique, is a mid- range powder in handgun loadings. It is also good for 3 1/4-1 1/4 12 gauge shotgun shells as well as most 20ga loads. It can be useful in SOME reduced charge loads for lead bullet rifles. That is what makes it UNIQUE!

  12. #12
    Senior Moderator
    Array HotGuns's Avatar
    Join Date
    Dec 2004
    Location
    Arkansas
    Posts
    14,915
    You are correct, Coffeecup. Thankyou for that. I ought to know not to post when I should be in bed. Edited to reflect that.

    I would rather stand against the cannons of the wicked than against the prayers of the righteous.


    AR. CHL Instr. 07/02 FFL
    Like custom guns and stuff? Check this out...
    http://bobbailey1959.wordpress.com/

  13. #13
    New Member Array mandel7172's Avatar
    Join Date
    Jul 2008
    Location
    MIAMI, FL
    Posts
    7
    thanks for the good info (and that minor correction from mr. coffee-lol) i will follow the guide books and if i find everthing the same except for the primer type i will try both -- does barrel length have an affect on burn rates -- does it the length affect which type of primer to use?

  14. #14
    Senior Moderator
    Array HotGuns's Avatar
    Join Date
    Dec 2004
    Location
    Arkansas
    Posts
    14,915
    Yes it does, especially with the slower powders. Using a slow powder in a short barrel will cause a big muzzle flash because a lot of the powder doesn't burn until it hits the air. Then it's fireball city.

    It takes a longer barrel to burn the powder up and get to maximum pressure.

    A long barrel with a quick burning powder hardly has any flash at all because the powder it used up before it hits the atmosphere.

    If you use a magnum load in a 4" in revolver, and you are using slow powder, the same load in an 8" revolver will show a higher speed as measured in FPS.

    Its also a higher pressure. If you are at a full house load as shown in a reloading book, and you substitute a magnum primer, it could be enough to be a problem.It may or it may not, but you wont know until you shoot it, and by then its too late. No sense taking a chance on ruining a gun or getting yourself hurt.

    When it doubt, its better to be safe than sorry.
    I would rather stand against the cannons of the wicked than against the prayers of the righteous.


    AR. CHL Instr. 07/02 FFL
    Like custom guns and stuff? Check this out...
    http://bobbailey1959.wordpress.com/

  15. #15
    New Member Array mandel7172's Avatar
    Join Date
    Jul 2008
    Location
    MIAMI, FL
    Posts
    7
    thanks to all- just wanted to make sure that i was doing it right

Page 1 of 2 12 LastLast

Links

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Similar Threads

  1. Small Pistol Primer VS Small Pistol Magnum Primers
    By rmilchman in forum Reloading
    Replies: 4
    Last Post: September 13th, 2009, 08:11 PM
  2. MIDWAY--CCI Small Pistol Magnum Primers #550
    By boscobeans in forum Reloading
    Replies: 0
    Last Post: July 8th, 2009, 01:37 PM
  3. Replies: 21
    Last Post: February 25th, 2009, 08:14 AM
  4. Small Pistol Primers - Standard or Magnum?
    By 40FIVER in forum Reloading
    Replies: 13
    Last Post: December 24th, 2008, 12:37 AM
  5. Magnum Pistol Primers for 45ACP
    By Rubber Duck in forum Reloading
    Replies: 6
    Last Post: August 18th, 2008, 06:21 PM

Search tags for this page

.357 magnum reloads with standard primer
,
best magnum primer for 357
,
best primers for a357 magnum
,
can i use standard pistol primers in a 357
,
magnum primers vx std primers
,
pistol primers 357
,
pistol primers for 9mm and 357 mag
,

std primer in 357

,
std primers vs mag primers
,
substituting magnum primers for std primers
,
using magnum primers in .357 or standard
,
using magnum primers in 357 standard loads
Click on a term to search for related topics.

» Log in

User Name:

Password:

Not a member yet?
Register Now!

» DefensiveCarry Sponsors