Quantcast

Sig P220 - Reloads - Magazine issues

Discussion in 'Handguns: Autoloaders' started by rduchateau2954, Jun 23, 2019.

  1. rduchateau2954

    rduchateau2954 Member

    Joined:
    Oct 30, 2011
    Messages:
    754
    Location:
    Green Bay, WI
    I reload for 45. Recently picked up a new P220 in 45. I was loading a few mags at the range the other day and with my reloads and I could only get 4-5 rounds in each of my two Sig mags.

    I pulled the gun apart and all the rounds passed the plunk test in all my 45's. Rounds loaded fine in all other mags but the 220 mags. Factory ammo loads fine in the Sig mags.

    I'm baffled. Thoughts?
     
  2. AK103K

    AK103K Member

    Joined:
    Dec 27, 2002
    Messages:
    6,324
    Did you check the OAL on the rounds?

    Ive had that issue before with other things, and just a little variance can make a difference if the mags dont have a lot of leeway, and/or the bullets are a little erratic in seating depth .
     
    JR24 likes this.
  3. JR24

    JR24 Member

    Joined:
    Aug 16, 2011
    Messages:
    2,656
    Location:
    The center of the mitt
    The Sig 220 mag gets pretty sensitive about OAL, even though the gun will shoot the rounds fine.

    You'll likely have to play a bit to find the right length, but my 245 never had an issue with 1.26" (same mags).

    Before I started loading I had a real issue during the 2013 banic with UMC ammo, I was limited with selections and some of the boxes I had 20% of the rounds that wouldn't load in my p220 mags. My 1911s ran em fine though
     
    AK103K likes this.
  4. 460Shooter

    460Shooter Member

    Joined:
    Feb 12, 2011
    Messages:
    10,606
    As already mentioned, I’d check your OAL. I had my 45s loaded to the manual stated length. The bullet noses were just touching the inside front of the magazine.

    I shortened them up a bit and stay a tenth to two tenths off max charge to avoid going over pressure.
     
    JR24 likes this.
  5. crestoncowboy

    crestoncowboy Member

    Joined:
    Feb 22, 2011
    Messages:
    1,065
    Definitely check the c.o.l. A wide meplat bullet will sometimes not fit in a 220 mag. The hornady custom bullets will fail to fit right from the factory.
     
  6. 9mmepiphany

    9mmepiphany Moderator Staff Member

    Joined:
    Dec 27, 2002
    Messages:
    21,562
    Location:
    northern california
    Sounds like a bit of excess variance in your OAL.

    While the "plunk test" is part of establishing a "working OAL" when working up a load, the often forgotten/overlooked rejoinder to that is "and fits in the magazine."

    The fact that you can get a few cartridges into the magazine would indicate that only some of the cartridges are too long.
    Which OAL and bullet are you using?
    Which press and die set are you using?
     
    1KPerDay likes this.
  7. JTQ

    JTQ Member

    Joined:
    Apr 6, 2009
    Messages:
    7,222
    Location:
    NW Florida
  8. rduchateau2954

    rduchateau2954 Member

    Joined:
    Oct 30, 2011
    Messages:
    754
    Location:
    Green Bay, WI
    These were extreme 230gr plated rn. Loaded to 1.2".

    Lee carbide dies w/Lee factory crimp die on a Lee turret press.

    The reasoning behind the plunk test at the range was just to eliminate any possible diameter issues. I once had a batch of reloads that seemed to randomly not want to chamber in my 1911. Through the plunk test and checking my press once I got back home I determined that my Lee fcd has backed out slightly and the last couple dozen rounds were out of spec.
     
    Last edited: Jun 25, 2019
  9. rduchateau2954

    rduchateau2954 Member

    Joined:
    Oct 30, 2011
    Messages:
    754
    Location:
    Green Bay, WI
    I wish I would have saved a few rounds to measure them. I'll do some experiments on the next batch of 45 and see if I can duplicate the results and at what oal the issue occurs.
     
  10. crestoncowboy

    crestoncowboy Member

    Joined:
    Feb 22, 2011
    Messages:
    1,065
    It's an issue with the oal for each hollow point, not necessarily oal. It will be different with each bullet shape. They can be considerably under max oal and still not work in a 220 if they are a wider bullet at the tip. Two that will hang in mine are UMC hollow points and hornady custom 180s. A more pointy hollow point will fit better due to the rounded front of the mag. It's a well documented issue.
     
  11. JTQ

    JTQ Member

    Joined:
    Apr 6, 2009
    Messages:
    7,222
    Location:
    NW Florida
    From the Camp "Long Term Observations" article...

    I suspect a 240gr bullet has a pretty wide ogive and would give problems in the P220 magazine.
     
  12. tomrkba

    tomrkba Member

    Joined:
    May 30, 2010
    Messages:
    2,024
    I loaded tens of thousands of rounds, but it took me a few batches to get it right.

    1) Resize the case
    2) Seat the bullet to just below the size of the mag
    3) Seat the bullet properly and straight
    4) FMJ seems to be a bit easier to deal with than lead or coated.

    I sorta looked at the rounds in the mag and adjusted as needed. The second and third rounds will rub or not. I started with mid-range loads and they seemed to run the slide fine.
     
  13. rduchateau2954

    rduchateau2954 Member

    Joined:
    Oct 30, 2011
    Messages:
    754
    Location:
    Green Bay, WI
    230gr. My bad
     
  14. 460Shooter

    460Shooter Member

    Joined:
    Feb 12, 2011
    Messages:
    10,606
    Was wondering about that.
     
  15. d'zaster

    d'zaster Member

    Joined:
    Aug 24, 2013
    Messages:
    240
    I have a P220 combat - does not feed certain sarge edge hollow points. Bullet gets stuck on the flat below the feed ramp
     
  16. JR24

    JR24 Member

    Joined:
    Aug 16, 2011
    Messages:
    2,656
    Location:
    The center of the mitt
    It's one of the reasons I chuckle when folk tout the 220's reliability over the 1911 (while likely true on the whole) because in my experience with numerous models of both was I had to worry far more about which ammo to use in my 220s and 245 than I ever have in any of my 1911s.

    Sure, once you find the right ammo the 220 is very reliable, but it was enough of an annoyance to make me abandon the 220 in favor of the 1911 as my preferred single stack .45 option.

    Not so much of a problem with the 226 though, my only current gun that's never had a stoppage of any kind
     
  17. ArchAngelCD

    ArchAngelCD Member

    Joined:
    Nov 25, 2006
    Messages:
    25,768
    Location:
    Northeast PA, USA
    That has nothing to do with the OPs problem. He can't load the ammo into the mag.
     
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice