anybody ever have a slam fire?

[santacruzgunner]

I was checking to see if a couple .223 rounds would chamber and after I pulled them out and inspected them I noticed where the firing pin hit the primer and the bolt slid home. Just seems like it could happen more often it wasn't on all of the rounds but a few had what looked like very lite strikes. Just an observatio. Are Magnum primers a good idea in .223?

[MarikinaMan]

I have a buddy who loaded 100 that all slam fired. Something about bad once fired cases. He tries them again and they either slam fired or didnt get a strike. I think he gave up on them. Had about 700.

[Rusty Scabbard]

I had one once. It was surprising but it happened at the range with the muzzle downrange so it was no problem. Cartridge was 458SOCOM with WLP primers. I did not see anything wrong with the bolt or mechanism afterward. I attributed it to the WLP. AR firing pins almost always mark the primers when chambering. Military 5.56 ammo has harder primers for that reason.

[ocabj]

I have had one slam fire in my life in 2009, I think. Was at the defunct IFG range and was doing my regular 200 yard standing practice strings that I usually do on the weekends.

Dropped a round in the ejection port, tilted rifle forward about 45 degrees to get the round started, and let the bolt fly via the bolt catch. Slam fire.

Remington 7-1/2 primer, LC brass, 77gr Nosler CC (24.0gr RL15)

Freak thing if you ask me. Glad it wasn't in a match. That would technically count as a shot (and a miss; -10 points).

[Mayor McRifle]

Are Magnum primers a good idea in .223?

Try these: http://www.cci-ammunition.com/produc...ers.aspx?id=30

[pacrat]

I was checking to see if a couple .223 rounds would chamber and after I pulled them out and inspected them I noticed where the firing pin hit the primer and the bolt slid home. Just seems like it could happen more often it wasn't on all of the rounds but a few had what looked like very lite strikes. Just an observatio. Are Magnum primers a good idea in .223?

If you are shooting one of those new fangled rapid fire bullet spitt'n AR rifles. They have a "floating" firing pin. It is common for them to leave a mark on an unfired primer. If the bolt is slingshotted. Primers for this type rifle are specifically made with harder cups. Overly sensitive primers can cause "slam fires". Factory ammo you should be GTG. Unless there is an issue with your BCG.

If you reload, where most slam fire issues happen. Use these primers.

https://www.midwayusa.com/product/1301170074/cci-small-rifle-military-primers-41

I have a buddy who loaded 100 that all slam fired. Something about bad once fired cases. He tries them again and they either slam fired or didnt get a strike. I think he gave up on them. Had about 700.

Also sounds like wrong primer issue. Not a case issue.


JM2c

[Full Clip]

Not a complete mag slam fire exactly, but I had some doubles and triples in an SKS with some reloads using standard LR primers. I needed CCIs...

[Jason_2111]

Avoid winchester primers for AR's. They've got a softer cup, and the free floating firing pin "could" cause a slam fire.

Of course, a filthy firing pin stuck in the forward position from too much carbon build up or grit can also cause a slam fire regardless of the primer used.

[fguffey]

No, I have never has a slam fire. I have never chambered a round with a high primer and I have never had a firing pin that protruded from the bolt face except the 45ACP I shot at Fort Hood.

I had a friend that built a magnificent 45 ACP 1911, it won the contest at Perry. He had a 45 he was working on, he placed one round into the magazine and released the slide. BANG! he put a hole into the roof of his shop, he called another friend. He did the same thing; BANG! again and another hole in the roof. And then they called me; I asked them if they had an open bolt 45 ACP or is there a chance the firing pin is carbon-ed up and stuck? They cleaned the pistol. I was thankful they did not load 7 rounds into the magazine.

F. Guffey

[OpenSightsOnly]

I was checking to see if a couple .223 rounds would chamber and after I pulled them out and inspected them I noticed where the firing pin hit the primer and the bolt slid home. Just seems like it could happen more often it wasn't on all of the rounds but a few had what looked like very lite strikes. Just an observatio. Are Magnum primers a good idea in .223?

Use a hand priming tool so you can check if the primer is high or flush, and use CCI 450, CCI BR4, or Rem 7 1/2 BR.

The flipside is that if the primer aint seated right you'll get a failure to fire then you be coming back here asking about dud primers.

[Desertdoc]

Use a hand priming tool with FGMM SRP in an AR with zero issues.

[Sir Toast]

Yes. I hate them. Every once in a long while, my LR-308 chambered for 6.5 Creedmoor will slam fire. I even had a spring installed in the bolt around the firing pin like an AR-10 to prevent slam fires, but every once in a long while, it occurs.

My LR-308 chambered for 6.5 Creedmoor is set up for precision target shooting and if it slam fires, I hate it. Plus, everyone in the match stares at me like they don't know what happened.

[AGGRO]

Once, but even once sucks. 6.5 Grendel. Always check your drop on rack.

[silvertriple]

Yes. I hate them. Every once in a long while, my LR-308 chambered for 6.5 Creedmoor will slam fire. I even had a spring installed in the bolt around the firing pin like an AR-10 to prevent slam fires, but every once in a long while, it occurs.

My LR-308 chambered for 6.5 Creedmoor is set up for precision target shooting and if it slam fires, I hate it. Plus, everyone in the match stares at me like they don't know what happened.

I've also noticed more prominent "light" firing pin strikes in my LR308 upon chambering a round than my AR15 platforms. Enough to be more wary of. And yes, I've had one slam fire with the LR308 at the range. Very unexpected. None so far with my AR15's although the light strikes are there.

[Citadelgrad87]

I had an M60 run away at the Citadel. Not sure how many rounds, but it was firing on its own long enough that I stopped it by twisting the belt and ending the ride.

Of course, it was FA to begin with, but having it run away while my finger was nowhere near the trigger was....different.