your thoughts on this (primers)

[Fatdaddy]

I ran accross this video the other night and was a little alarmed.

http://www.youtube.com/watch?v=4gMbu-yvwfw

It shows a bolt being dropped on a live round and the obvious ding on the primer from the floating firing pin. I took my Stag Arms AR on the back deck and reproduced the same results.
Is this something to be concerned about? 'Cause I'm now concerned. I've been using CCI 400 small rifle primers for my .223 loads til now.
I'd like to hear yall's veiws on this.

[ISUSteve]

Nothing to be concerned about. Just make sure the primer is seated flush or slightly below flush. Its more of a concern in a Garand/M1A, not so much in the AR.

[Steve Koski]

All AR's do that (as far as I know). Look at any chambered round that wasn't fired. It'll have the same micro tap.

[MakeMineaP99]

Nothing to be concerned about. Just make sure the primer is seated flush or slightly below flush. Its more of a concern in a Garand/M1A, not so much in the AR.

Exactly. I can't speak for the AR (I wouldn't be caught dead with a pop gun except for a Carbine), but be damn sure your primers are seated right for the Garand and under no circumstances use Federal primers in a Garand, Carbine or other free float firing pin guns.

[ISUSteve]

Does the bolt move faster when you're shooting instead of dropping just dropping it? I don't think so. Am I missing something?

[MakeMineaP99]

I'm not following you.

Are you asking if the firing pin and bolt travel faster during cycling than dropping it manually?

[ISUSteve]

I'm not following you.

Are you asking if the firing pin and bolt travel faster during cycling than dropping it manually?

Yeah, the guy on the video said that if you were firing, the primer indents would be much bigger cause the bolt would be faster.

[BigSlick]

Nope.

Travel is limited (as in the same) whether actuated by a gas key or a drop of da bolt catch. Spring still da same weight

[MakeMineaP99]

Very acute observation for a controls/software guy, 'Slick.

[Fatdaddy]

Seems like the bolt could get some rebound inertia from the buffer bottoming out...maybe.

[ISUSteve]

I would say it would actually have less velocity due to the clip/bullets being stripped. He didn't have a clip in the gun from what I saw. He might of had a SLED.

The other obvious mistake in the video...he said he had a Garand chambered in 308. No such thing, not in my book.

[BigSlick]

Very acute observation for a controls/software guy, 'Slick.

I get lucky sometimes an remember what I overheard some enganeer say ;)

[MakeMineaP99]

Seems like the bolt could get some rebound inertia from the buffer bottoming out...maybe.

I would say it would actually have less velocity due to the clip/bullets being stripped. He didn't have a clip in the gun from what I saw. He might of had a SLED.

The other obvious mistake in the video...he said he had a Garand chambered in 308. No such thing, not in my book.

Negligible.

Yes, Steve, plenty of Garands chamber in .308, but that's like having a Thompson chambered in 9x19.

[ISUSteve]

Negligible.

Yes, Steve, plenty of Garands chamber in .308, but that's like having a Thompson chambered in 9x19.

Not at all. Most recorded slam-fires in Garand were without a clip. It takes a lot of force to strip a round out of an en-bloc.

A "Garand" in 308 is the red-headed step child, better to just throw it out in the street. Its just not right.

[Steve Koski]

My BIL has a garand in 308. Works like crap.

[MakeMineaP99]

Yeah, because the bolt was packed with cosmoline. ;)

Those .308 Garands are capible of great things. Ask the Navy. Every seen a Crane Lake or McCoy Garand?

[MakeMineaP99]

My BIL has a garand in 308. Works like crap.

Your BIL needs to send me that rifle, I'll take care of it. I might even send him some used primers in exchange.

[BigSlick]

I seen em in .308, even in a tanker, jus somethin ain't right about em.

Nice idea in theory, but jus oddball.

I wouldn't turn one down for free, or for a hell of a trade, but I sure as hell wouldn't buy one

[Steve Koski]

It was new, or nearly new, when my BIL was shooting it with me. Maybe he got da grease out of it by now.

[ISUSteve]

It was new, or nearly new, when my BIL was shooting it with me. Maybe he got da grease out of it by now.

Garands love grease. Most problems can be solved with more grease. I call it the Oprah treatment.

[Steve Koski]

What? You wanna grease up Oprah?

[JLarsson]

What? You wanna grease up Oprah?

Great Scott, man! Have you no concern for other people's mental imagery and subsequent anguish???:yikes:

[ISUSteve]

Wheres the Mullah with a pic??? I know he has one

[ronterry]

I know they make a special clip that allows single loading, and indeed it's purpose is legal competition but more to slow the bolt down to prevent slamfires.
Without the single clip deal (I have one if anybody wants a photo) you should bring the bolt about half way before releasing it. This info was in the publication that came with my new Garand from Springfield a couple years back.
I did test the dimple deal cause it bothered me a bit when I got my Garand, and after letting the bolt slam home over & over on a empty CCI-200 primed case I got nothing.
Not saying it couldn't happen on a different brand though. Another note, I believe both the Garand & the AR15 use a lighter firing pin now to help even more in preventing the slamfire issues. Of course they do make CCI#41 (SR) & CCI#34 (LR) which I now use and in fact I sometimes find cheaper than CCI-400/200 repectfully, that have a little harder shell.

[ISUSteve]

The single loading clip is marketed as the SLED, Single Loading Enhancement Device, I believe.

Slam fires can be dangerous, but as long as you reload properly, they aren't an issue.

I use WLP primers, but I set them about 0.004" below flush with a primer pocket uniformer.

[Rangerat]

I have some once-fired 223 Rem BH Match brass with the primer pockets at SAMMI minimum depth and CCI-400 primers at SAMMI max thickness. The result was primers seating a couple of mils higher than the brass base. Not good in my AR. I now check and primer pocket uniform to be sure the primer is below the base.