Small Rifle Primer with Thickest Cap

[treillw]

What is the small rifle primer with the thickest metal cap?

Want it for 5.56.

Thanks!

 

[tsyarnall]

Not sure if any of the other #41 primers are thicker than the CCI #41 srp, but I understand that the CCI #41s were/are made especially for use in reloading AR-15 ammo (5.56). I’ve never tried the other brands as these work great.

 

[newbieshooter]

Reference:

CCI 41's also have a .025 cup thickness

CCI # 41 primers

Harder cups? Thicker cups? Both?? If so, might that also mean slightly larger diameter?

forum.accurateshooter.com

 

[Surgeonwithagun]

CCI 41s also have a short anvil to supposedly be less prone to slam fires.

John

 

[6bra1k]

what the chart does not tell you is how HARD the cup material is..a major concern

 

[JEFFPPC]

When I started years ago in short range br with a 6PPC and an unbushed firing pin the primer that held up the best for me was the CCI BR4. As 6bra1k stated and was told to me by a CCI technician thickness is not the complete story, hardness of the cup varies.

 

[Bill Norris]

Some years back I was hand loading for a factory Ruger in 6PPC that also loved to crater primers and the CCI BR-4 was the one that cratered the least in that rifle.

 

[Dusty Stevens]

I used to use remington primers back in the blanking days. Remington and cci41 would be my bets

 

[treillw]

Any insight on the primer hardness?

Thanks!

 

[spudgun]

CCI #41, SRP, if you can find them.....

 

[Dusty Stevens]

Any insight on the primer hardness?

Thanks!

I know they blanked less so im guessing they are harder

 

[Woofie]

Someone in another thread mentioned they managed to buy some Unis Ginex primers for 5.56mm lately. I haven't seen any but in case: Ginex's 4,5/3-I primer for 5.56mm has a cup thickness of .68mm, which unless my converter app has undone me is 0.027". There is another Ginex primer for 5.56mm, the 4,5/3-N which has a lesser cup thickness of .6mm (0.024"). Other than that the two primers are similar, same quantity of boom-boom mix, etc.
I can't speak to the metallurgy of the cups, which as @6bra1k et al have pointed out, is not an unimportant factor.

 

[Big Mc]

What is the small rifle primer with the thickest metal cap?

Want it for 5.56.

Thanks!

Wolfe Russian But you cant get any. On my last 1000. Tommy Mc

 

[D-4297]

Have to agree with Dusty on that . Coming up on 20,000 rounds since going to the Rem 7-1/2 BR without a single perforated , blanked or mis-fire , from a Kelby panda . Though it gets a new F/P spring every year , too .

 

[Tommie]

Question-
As the cup to anvil distance is larger in some primers such as the #41, wouldn’t reliability be compromised unless the priming compound were reformulated?

 

[INTJ]

Fed 205 AR is also supposed to be thicker

 

[TheOtherZilla]

Fed 205 AR is also supposed to be thicker

Funny thing. a few years ago I found those at Sportsmans marked $23. Bought 2 thou and still sittin here.
Edit: $23/thou.

 

[JAlfred]

Wolfe Russian But you cant get any. On my last 1000. Tommy Mc

My Savage F-TR has a generous firing pin hole and the Russian SRMs have taken everything I have thrown at them in that rifle without complaint. I lucked into another 10K a few years ago, so I am still in pretty good shape. Only problem, that second batch is not 100% with ball powders.

 

[Woofie]

In my previous post: "There is another Ginex primer for 5.56mm, the 4,5/3-N which has a lesser cup thickness of .6mm (0.024")."
I was just at Bruno's. They had UG SRPs for 5.56mm, they were the -N variety so I am guessing that's what's out there.

 

[Woofie]

My Savage F-TR has a generous firing pin hole and the Russian SRMs have taken everything I have thrown at them in that rifle without complaint. I lucked into another 10K a few years ago, so I am still in pretty good shape. Only problem, that second batch is not 100% with ball powders.

I am in the same boat with my Savage F/TR .223 but get by with CCI #41s. Must get around to having that bushed.