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Which "Full Power" range ammo for reliable G19 Gen 4?

Discussion in 'Caliber Corner' started by RightYouAreKen, Oct 9, 2010.

  1. RightYouAreKen


    Aug 20, 2010
    Hi all,

    I realize this isn't Caliber Corner, but since this is more a question about G19 Gen4 needs than anything, I though it best to go here.

    I've got a G19 Gen4 that I've got about 1600 rounds though and still average 1 failure to feed every 50 rounds or so. I've been primarily shooting cheap Federal and Remington UMC 115gr from Walmart. I read over and over that these rounds are weak and are why folks are having problems with the stiffer recoil springs in the gen 4.

    So, I'm hoping folks can help recommend some good "full power" rounds that will operate this pistol more reliably. I'm hoping to purchase 500-1000 rounds, for hopefully somewhere in the $0.22-0.25 per round range, or less, online.

    Any recommendations you guys could make would be greatly appreciated.

  2. DannyR

    DannyR Moderator Millennium Member

    Dec 17, 1998
    Roanoke, Virginia
    Here is a copy of my Excel spreadsheet. If you would like a really nice copy, just E-mail me. I would recommend Winchester USA and American Eagle in 115-gr, and any 124-gr available. Last week I just 1K rounds of Blazer 124's on sale from Gander, and 1K rounds of S&B 115's on sale at Cabela's. You will note that Federal Champion and UMC are at the bottom of the list.

    9mm FMJ Ballistics

    Brand Weight Velocity Power Factor
    Fiocchi 124 1180 146.32
    Fiocchi 147 1000 147.00
    Fiocchi 158 940 148.52
    Am Eagle 147 1000 147.00
    Win RA9124N NATO 124 1185 146.94
    RWS Sport FMJ 124 1181 146.44
    S&B 124 1181 146.44
    Rem. Express 147 990 145.53
    Magtech 147 990 145.53
    UMC 147 990 145.53
    Lawman 147 985 144.80
    Prvi Partizan 147 984 144.65
    S&B 115 1250 143.75
    Fiocchi 115 1250 143.75
    Am Eagle 124 1150 142.60
    Glock Minimum* 124 1148 142.35
    Win USA 124 1140 141.36
    Blazer 147 950 139.65
    Lawman 115 1200 138.00
    PMC Bronze 124 1110 137.64
    Magtech 124 1109 137.52
    Win USA 115 1190 136.85
    Rem. Express/UMC 124 1100 136.40
    Am Eagle 115 1180 135.70
    Glock Minimum* 115 1180 135.70
    Blazer/Blazer Brass 124 1090 135.16
    Lawman 124 1090 135.16
    Cor-Bon match 147 900 132.30
    My Reloads 147 900 132.30
    PMC Bronze 115 1150 132.25
    Prvi Partizan 115 1148 132.02
    Blazer/Blazer Brass 115 1145 131.68
    Rem. Express/UMC 115 1135 130.53
    Magtech 115 1135 130.53
    Federal Champ 115 1125 129.38

    *Per 2000 Glock Armorer's manual

  3. RightYouAreKen


    Aug 20, 2010
    Wow, that's some great information. Thanks Danny! I'll e-mail you for the spreadsheet.

    So in reading this data, would I be correct in assuming that a higher power factor would equal a stronger force imparted to the barrel/slide of the pistol, and is really "the number" I should be looking at?
    Last edited: Oct 9, 2010
  4. DannyR

    DannyR Moderator Millennium Member

    Dec 17, 1998
    Roanoke, Virginia
    The higher the power factor the greater the power. .45acp is in the 200 range and 40's are in the 180 range.
  5. RightYouAreKen


    Aug 20, 2010
    Just as a followup, I bought 2 boxes of American Eagle 147gr (#4 on Danny's above list) today at the range and ran those through. The difference in the way the gun cycled was dramatic. The cases were ejected much stronger and I had no issues at all through those 100 rounds.

    Afterwords I shot another 100 rounds of Rem UMC 115gr I already had and had was not surprised to have one FTF. Those rounds feel like half the power of the American Eagles, and the cases were only getting ejected a foot or two from me.

    After I get back from vacation in a few weeks I'll be buying a case of some higher power stuff and seeing how that works. My hunch is that the pistol will be much more reliable.
    Last edited: Oct 10, 2010
  6. Ogie


    Jul 27, 2010
    Northwest Indiana
    I just bought some RWS 124 gr. ammo. It's made in Switzerland so I assume it's a NATO loading. I've never tried it before. I'll see how it works out in the next week or so.
  7. DannyR

    DannyR Moderator Millennium Member

    Dec 17, 1998
    Roanoke, Virginia
    RWS is very high on the performance list. Excellent stuff when you can get it.


    Nov 23, 2007
    This ammo worked perfectly in my G4 19 today!
  9. TwentyNizzo


    Feb 23, 2010
    The Winchester 9mm NATO from CTD is the hottest 9mm I have fired. Goes for about $16/50 which isn't bad at all.
  10. nostradumass

    nostradumass Toten a 36

    Feb 2, 2010
    Too Near Charlotte NC has Ranger 124 at $219per 1000 right now.:wavey:
    That works out with shipping to $12 per 50 to my house Fed Champ with tax is abot $10.80 plus gas. Not much diff.
    Last edited: Oct 10, 2010
  11. Mitchell4198


    Sep 16, 2008
    So far I have shot 550 rounds of 115gr Federal, UMC, Blazer Brass and
    S & B thru my G19 Gen4. No problems at all. I could tell that the S & B was loaded a little hotter than the others.

    Guess mine is a keeper.
  12. Two Guns

    Two Guns VIP MEMBER

    Nov 4, 2004
    DannyR, I am amazed at how many post you have.And I thought Bac posted alot.
  13. mboylan


    May 11, 2007
    That's expensive. I would have to cut my shooting by more than half. I'm reloading with 147 gr bullets and ultra-premium VV N320 powder for $5.75/50.
    Last edited: Oct 10, 2010
  14. tx787


    Feb 11, 2010
    ATG has Winchester Ranger NATO on sale, I'd get some of that or Speer Lawman 124gr.
  15. RightYouAreKen


    Aug 20, 2010
    Yeah, I saw that. I'd order it if I wasn't going to be out of town when it would arrive. Hopefully it will still be available when I get back!
  16. SMLR


    Jul 1, 2007
    Rocky Mount, VA
    My Gen4 G19 loves Federal American Eagle 124gr and groups like a target pistol with this stuff.

    I have found it can be a bit finicky with light loads and I had a few issues early on with my favorite Atlanta Arms load (920fps out of a G17, PF of 135), however a box of +p+ really helped break-in the recoil springs.
  17. Tranquillity

    Tranquillity Glockaholic

    Feb 1, 2011
    This thread is great. Thank you Danny for this invaluable info, it got me off to a trouble free start with my G19. I'm curious, why isn't this stickied? :supergrin:
  18. Andy W

    Andy W

    Dec 4, 2006
    Kinda off topic but is there a formula to get the "power factor" of a particular load?
  19. SMLR


    Jul 1, 2007
    Rocky Mount, VA
    "Power Factor" as used by USPSA/IPSC and IDPA is calculated by multiplying bullet weight by velocity. USPSA then divides this number by 1,000 (IDPA doesn't).

    "Major" is 165+ and "Minor" is 125-thru-164. Generally speaking, .40 S&W, 10mm, .45 ACP, .45 GAP and .357 SIG would be considered "Major" and 9mm would be considered "Minor".

    For example:

    9mm 115gr @ 1,150fps = 132 Power Factor (minor)

    .45 ACP 230gr @ 850fps = 195 Power Factor (major)

    Power factor is also biased towards heavy bullets. If you take two rounds with the same muzzle energy, but different bullet weights and velocites, the round with the heavier bullet would have the higher power factor.

    If you want to calculate the actual muzzle energy of the load you would use the following formula:

    (bullet weight x (velocity x velocity))/450400 = Muzzle Energy in ftlbs

    For example:

    9mm 115gr @ 1150fps

    (115 x (1150 x 1150))/450400 = 338 ftlbs

    .45 ACP 230gr @ 850fps

    (230 x (850 x 850))/450400 = 369 ftlbs

    When comparing this to "Power Factor" you will notice this method is more baised towards velocity instead of bullet weight.
  20. SMLR


    Jul 1, 2007
    Rocky Mount, VA
    With regards to selecting reliable ammo, I would suggest using muzzle energy as your guide.

    My favorite competiton load is a 9mm 147gr JHP @ 920fps (276ftlbs - 135 PF). This is the load that initially choked my Gen4 G19.

    It had no trouble with Winchester White Box 115gr. (338ftlbs - 132 PF).

    The American Eagle 124gr @ 1,150fps runs exceptionally well and is great load for breaking in new Gen4s (364ftlbs - 142 PF).

    Hope this helps!