G19C g3 won’t run. Lots of stovepipes and FTF

[five.five-six]

My standard 9MM load is a plated 124 RN over 4 grains B.E. and WSP. Every 9MM I have eats that stuff. Even other Glocks run fine on it but this G19C runs like a single shot. I can get it to run if I straight arm, but it should run 100%. This gun is for my 14 year old. He really likes the reduced recoil, if I have to heat up my ammo, that takes away from the lite recoil. Also did the same thing with 115 grain range reloads. Any ideas?

[foggyandcold]

New reloader here so take with grain of salt.

Are there lighter springs available for your gun? In a 1911, changing spring weight is part of the playbook.

[Sandspider500]

It's already a light load, now your trying to shoot a light load in a pistol with holes in the barrel.

It's a recoil operated pistol.

Try a lighter spring if it doesn't already have one, otherwise it's loosing to much velocity from the holes. Need to up the slide speed so it will function, either with more powder or lighter spring. If too light the striker spring will push the slide out of battery.

Glock 19c= 12 ounce slide or 5250 grains
Glock 19 barrel= 3.6 ounces or 1575 grains
Barrel slide assembly= 15.6 ounces or 6825 grains
124gr ÷ 6825gr = .0182(rounded)

124gr @ 925fps
925 × .0182 = 16.8fps slide speed

Use a Chrono with another 19 to see what velocity it's at. Then see what the 19c is at. Need around 980-1000fps to function with that weight bullet.

[five.five-six]

New reloader here so take with grain of salt.

Are there lighter springs available for your gun? In a 1911, changing spring weight is part of the playbook.

It's a glock, if you can come up with a stupid idea for it, there are 3+ manufactures already making whatever it is you thought up. Wolff makes a reduced recoil springs and guide rod. we made some increased load ammo to try today but I'm also ordering 14 and 16 pound springs. I think a 16 pound spring is going to be my winner.

[five.five-six]

It's already a light load, now your trying to shoot a light load in a pistol with holes in the barrel.

It's a recoil operated pistol.

Try a lighter spring if it doesn't already have one, otherwise it's loosing to much velocity from the holes. Need to up the slide speed so it will function, either with more powder or lighter spring. If too light the striker spring will push the slide out of battery.

Glock 19c= 12 ounce slide or 5250 grains
Glock 19 barrel= 3.6 ounces or 1575 grains
Barrel slide assembly= 15.6 ounces or 6825 grains
124gr ÷ 6825gr = .0182(rounded)

124gr @ 925fps
925 × .0182 = 16.8fps slide speed

Use a Chrono with another 19 to see what velocity it's at. Then see what the 19c is at. Need around 980-1000fps to function with that weight bullet.

charging up the labradar as I type this. We'll see what 4.0 and 4.4 gn B.E. does on each gun later today

[G-forceJunkie]

Glocks are made for NATO spec 124gr ball. There is actually a chart in the Armors manual for minimum ammo power/velocity. 115 gr is 1180fps and 124gr is 1148 fps. Those are the listed MINIMUMS straight from the horses mouth.

[Sandspider500]

charging up the labradar as I type this. We'll see what 4.0 and 4.4 gn B.E. does on each gun later today

There you go. You'll get it figured out.

I checked my load notes and I was using 3.7gr of bullseye with a lee 124gr tc bullet. Oal was 1.085 ave vel was 1019fps from 4" barrel.

I had another with a different powder and different bullet, a lee 125 2r round nose and it functioned with a 1006fps avg from 4" g19

[mofo1111]

While you're at it, try locking the wrist(firming up wrist strength and grip). Glock seem to stove pipe frequently with a light or weaker grip using light loads. Factory ammo seems to have no problems. Young kids shooting Glocks seem to have many stove pipes or failure to feed. The slide needs to cycle with enough force and a weak grip "absorbs or distributes" some of that energy.

[five.five-six]

While you're at it, try locking the wrist(firming up wrist strength and grip). Glock seem to stove pipe frequently with a light or weaker grip using light loads. Factory ammo seems to have no problems. Young kids shooting Glocks seem to have many stove pipes or failure to feed. The slide needs to cycle with enough force and a weak grip "absorbs or distributes" some of that energy.

Kid has had 0 problems with regular G19, probably 500 down the pipe.

[five.five-six]

Glocks are made for NATO spec 124gr ball. There is actually a chart in the Armors manual for minimum ammo power/velocity. 115 gr is 1180fps and 124gr is 1148 fps. Those are the listed MINIMUMS straight from the horses mouth.

One more mark against “perfection” I’ve probably ran 10-20K of this load through all sorts of lesser guns without an issue. Sig’s, Kahr’s, Ruger’s even Highpoints eat this load. But not the G19C. It’s a single shot.

[five.five-six]

It's already a light load, now your trying to shoot a light load in a pistol with holes in the barrel.

It's a recoil operated pistol.

Try a lighter spring if it doesn't already have one, otherwise it's loosing to much velocity from the holes. Need to up the slide speed so it will function, either with more powder or lighter spring. If too light the striker spring will push the slide out of battery.

Glock 19c= 12 ounce slide or 5250 grains
Glock 19 barrel= 3.6 ounces or 1575 grains
Barrel slide assembly= 15.6 ounces or 6825 grains
124gr ÷ 6825gr = .0182(rounded)

124gr @ 925fps
925 × .0182 = 16.8fps slide speed

Use a Chrono with another 19 to see what velocity it's at. Then see what the 19c is at. Need around 980-1000fps to function with that weight bullet.

So with the 124’s over 4.4 BE the G19C runs great. 50 round 0 stoppages.

G19C 1,045.8 FPS
G19. 1,068.8 FPS

23FPS lost to compensator

4.0 BE

G19C 964.6 FPS
G19. 1,021.5 FPS

56.9 FPS lost to compensator

I’m starting to think perhaps the smaller load isn’t fully expanding the brass. Typically, you would see the brass be filthy, at least with .45ACP and .357/.38 that happens with powder puff loads. The brass looked bout the same on the FTE G19C


softer spring set is on it’s way.

[Sandspider500]

So with the 124’s over 4.4 BE the G19C runs great. 50 round 0 stoppages.

G19C 1,045.8 FPS
G19. 1,068.8 FPS

23FPS lost to compensator

4.0 BE

G19C 964.6 FPS
G19. 1,021.5 FPS

56.9 FPS lost to compensator

I’m starting to think perhaps the smaller load isn’t fully expanding the brass. Typically, you would see the brass be filthy, at least with .45ACP and .357/.38 that happens with powder puff loads. The brass looked bout the same on the FTE G19C


softer spring set is on it’s way.

Looks like you got it. Have to see what the lighter spring will do for ya. If it doesn't work out, looks like you might be able to go 4.2gr for the 19c maybe. But that's why we reload.

[five.five-six]

Looks like you got it. Have to see what the lighter spring will do for ya. If it doesn't work out, looks like you might be able to go 4.2gr for the 19c maybe. But that's why we reload.

Yea, I just don’t want to have 2 different 9mm recipes. I have 3 different 5.56 recipes and it’s a bit of a pain when I take the AR’s out. Hopefully I have springs by the weekend.

I ordered a Wolff 14 pound spring + guid rod kit and a 16 pound spring. I’m sure that will get me running.


Next item is to get the slide cut for an optic. I have an Holosun RMR cut optic for that gun.

[Spyder]

Compensated barrel letting too much gas out too soon, rounds need more powder.... is my guess.

[Sandspider500]

Yea, I just don’t want to have 2 different 9mm recipes. I have 3 different 5.56 recipes and it’s a bit of a pain when I take the AR’s out. Hopefully I have springs by the weekend.

I ordered a Wolff 14 pound spring + guid rod kit and a 16 pound spring. I’m sure that will get me running.


Next item is to get the slide cut for an optic. I have an Holosun RMR cut optic for that gun.

Well, I meant you'd be changing your 1 load for all your pistols to 4.2gr.

Hopefully after it's cut and the optic is added, it doesn't make the slide any heavier than it is now, or you may find yourself back where you started.