I "think" I just had my first double charge experience.

[hdbiker]

I'm old school, I drop a couple grain light from my Uniflow into the scale pan , set it on the scale and trickle up to desired charge, for every Ctg . I load for.

 

[Russ57]

Needless to say I'd like to know what caused this. Towards that end I think what would help me is if you guys helped me compile a list. Maybe something like this.

Ammo: High primer, Bullet setback, Double charge, or ????.

Gun: Excessive head space, Dremel Dan ramp and throat job, or ????.

I'm having a hard time seeing how it is possible for a 1911 to fire out of battery by squeezing the trigger. IIRC by about 0.1" of barrel/slide rear travel bullet has left the gun. By about 0.11" the link just starts to pull the barrel down. By 0.11" of rearward slide travel the hammer can't contact the firing pin, only the firing pin stop. I can see a high primer impacted by breech face. In my case it was the first round. So to me that eliminates the breech face or extractor hitting the primer. I did have to squeeze the trigger. I can't see how the barrel/slide couldn't be locked together in any situation that would allow the hammer to impact the firing prime with enough force to light off the primer.

For those of you that have had cases blow out; Did you guys ever use go/no go head space gauges?

 

[EricBu]

Needless to say I'd like to know what caused this. Towards that end I think what would help me is if you guys helped me compile a list. Maybe something like this.

Ammo: High primer, Bullet setback, Double charge, or ????.

Gun: Excessive head space, Dremel Dan ramp and throat job, or ????.

I'm having a hard time seeing how it is possible for a 1911 to fire out of battery by squeezing the trigger. IIRC by about 0.1" of barrel/slide rear travel bullet has left the gun. By about 0.11" the link just starts to pull the barrel down. By 0.11" of rearward slide travel the hammer can't contact the firing pin, only the firing pin stop. I can see a high primer impacted by breech face. In my case it was the first round. So to me that eliminates the breech face or extractor hitting the primer. I did have to squeeze the trigger. I can't see how the barrel/slide couldn't be locked together in any situation that would allow the hammer to impact the firing prime with enough force to light off the primer.

For those of you that have had cases blow out; Did you guys ever use go/no go head space gauges?

99%....brass wasn't sized completely or was slightly bulged below the portion the sizing die could reach..which resulted in it not completely chambering. 1% chance your barrel has a out of spec chamber (or the gun was "tuned" by a youtube instant smith). Any firearm can potentially fire out of battery. Your "by squeezing the trigger" is a non-sequitur...Of course the trigger was squeezed, unless you're Alec Baldwin? If the cartridge isn't seated completely, it blows out the case in the direction the pressure wants to go...the exposed portion of the case, and right down the feed ramp (why the mag blows out in these instances). This is not exactly rocket science, and isn't completely uncommon. Sadly, it's even more common today than in years past because of range pick up fired by guns with unsupported chambers, and standard reloading practices do NOT account for this, resulting in a higher likeliehood of OOB failures for reloaders who don't plunk, or more preferable, case gauge. I would put money down that if you buy yourself a decent case gauge and go through the rest of that ammo, you'll find more. If you dont' want to buy a gauge, then pull your 1911 apart...take the barrel, clean it, and start plunkin' rounds in it. They MUST drop in completely without effort, and completely seat. If it is even slightly off..even just mm's, OOB is possible. If you have to push it at all to get it to drop into the barrel...OOB is possible. If you tip the barrel, the round should freely drop out without requiring effort. If any condition occurs where you have to push the ammo in to get it to seat, or you have to use effort to get it out requires further investigation. If you have some factory ammo, try that, if also doesn't plunk, then your chamber might be out of spec...if the factory ammo plunks, then your reloads are out of spec, and almost certaintly due to what I said above. I'll repeat again, based on the load data you provided, a double charge would have done a LOT more damage...magnitudes more, and the damage you described is classic for an OOB on a magazine fed pistol.