What caused this?

AL45 · February 15, 2014, 01:16 PM

I loaded some pretty hot .45 Colt loads for my Blackhawk and after firing them I noticed 5 out of 10 had what looked like double primer strikes. It was a 355 grain bullet with H110 and Winchester primers. The second "dimple" was not as deep. In some cases the 2 strikes were touching and in some cases there was separation between the 2 strikes. Any ideas?

Sevens · February 15, 2014, 01:32 PM

Neat. Any pictures?

With a thumping load like that, any chance the hammer is bouncing?
I'd say this is just as much a question for the gunsmith area or the revolver section as it would be for the Handloading section. While it may be ammo related, it sounds more like a gun issue than ammo.

WESHOOT2 · February 15, 2014, 01:35 PM

No it's an ammo issue

I think you called it; cases bouncing back and forth off the breechface.

Might be over-loaded for your gun.

I'd be looking at various dimensions......

AL45 · February 15, 2014, 03:50 PM

The load is in the 20,000 pressure range and is considered a Ruger Only load. It is being fired from a Ruger Blackhawk. I have fired this load before and did not have this problem. Maybe it is a gunsmith question.

tangolima · February 15, 2014, 04:21 PM

Does your revolver have end shake?

-TL

nemesiss45 · February 15, 2014, 04:24 PM

how old is the brass? maybe the primer pocket is getting a little loose and is letting the primer shift under load? maybe it is some wear in the guns firing mechanism that is now allowing the hammer to jump when it didn't before?

WESHOOT2 · February 15, 2014, 04:39 PM

Firing pin bounce?
Weakened firing pin spring?

I hate it when it's a gun issue

JawjaBoy · February 15, 2014, 10:35 PM

Pictures would be a great help. In cases like this, descriptions only go so far.

AL45 · February 15, 2014, 11:06 PM

I went out today and shot 10 328 grain Ruger only loads with no problems. The brass is once fired Starline, so primer pockets are tight. I would show pictures, but to be perfectly honest, I don't know how and am too stubborn to learn. LOL

Clark · February 15, 2014, 11:20 PM

45 Colt and H110 kicks me so hard, it challenges my stubbornness.

February 15, 2014, 01:16 PM	#1
AL45 Senior Member Join Date: December 12, 2012 Posts: 754	What caused this? I loaded some pretty hot .45 Colt loads for my Blackhawk and after firing them I noticed 5 out of 10 had what looked like double primer strikes. It was a 355 grain bullet with H110 and Winchester primers. The second "dimple" was not as deep. In some cases the 2 strikes were touching and in some cases there was separation between the 2 strikes. Any ideas?

February 15, 2014, 01:32 PM	#2
Sevens Senior Member Join Date: July 28, 2007 Location: Ohio Posts: 11,756	Neat. Any pictures? With a thumping load like that, any chance the hammer is bouncing? I'd say this is just as much a question for the gunsmith area or the revolver section as it would be for the Handloading section. While it may be ammo related, it sounds more like a gun issue than ammo. __________________ *Attention Brass rats and other reloaders:* I really need .327 Federal Magnum brass, no lot size too small. Tell me what caliber you need and I'll see what I have to swap. PM me and we'll discuss.

February 15, 2014, 01:35 PM	#3
WESHOOT2 Senior Member Join Date: February 20, 1999 Location: home on the range; Vermont (Caspian country) Posts: 14,324	No it's an ammo issue I think you called it; cases bouncing back and forth off the breechface. Might be over-loaded *for your gun*. I'd be looking at various dimensions...... __________________ . "all my ammo is mostly retired factory ammo"

February 15, 2014, 04:39 PM	#7
WESHOOT2 Senior Member Join Date: February 20, 1999 Location: home on the range; Vermont (Caspian country) Posts: 14,324	Firing pin bounce? Weakened firing pin spring? I hate it when it's a gun issue __________________ . "all my ammo is mostly retired factory ammo"

February 15, 2014, 11:20 PM	#10
Clark Senior Member Join Date: December 4, 1999 Location: WA, the ever blue state Posts: 4,678	45 Colt and H110 kicks me so hard, it challenges my stubbornness. __________________ The word 'forum" does not mean "not criticizing books." "Ad hominem fallacy" is not the same as point by point criticism of books. If you bought the book, and believe it all, it may FEEL like an ad hominem attack, but you might strive to accept other points of view may exist. Are we a nation of competing ideas, or a nation of forced conformity of thought?

February 15, 2014, 03:50 PM	#4
AL45 Senior Member Join Date: December 12, 2012 Posts: 754	The load is in the 20,000 pressure range and is considered a Ruger Only load. It is being fired from a Ruger Blackhawk. I have fired this load before and did not have this problem. Maybe it is a gunsmith question.

February 15, 2014, 04:21 PM	#5
tangolima Senior Member Join Date: September 28, 2013 Posts: 3,816	Does your revolver have end shake? -TL

February 15, 2014, 04:24 PM	#6
nemesiss45 Senior Member Join Date: February 6, 2014 Posts: 526	how old is the brass? maybe the primer pocket is getting a little loose and is letting the primer shift under load? maybe it is some wear in the guns firing mechanism that is now allowing the hammer to jump when it didn't before?

February 15, 2014, 10:35 PM	#8
JawjaBoy Member Join Date: August 21, 2013 Posts: 56	Pictures would be a great help. In cases like this, descriptions only go so far.

February 15, 2014, 11:06 PM	#9
AL45 Senior Member Join Date: December 12, 2012 Posts: 754	I went out today and shot 10 328 grain Ruger only loads with no problems. The brass is once fired Starline, so primer pockets are tight. I would show pictures, but to be perfectly honest, I don't know how and am too stubborn to learn. LOL