Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel
Member Login
Posted: 9/12/2010 7:02:35 PM EDT
[Last Edit: 9/12/2010 7:03:24 PM EDT by SuperJanitor]
I am looking to order 5K from Wideners. For AR 15 they suggest the magnum primers. They say the charge is the same in each, but the mag primer has a harder cup. What should I get? The "KVB 223" or the magnum? Why would harder cups be better?

Also, I think I have some primers that are the same thing. They are Murom, "KVB 223" made in Russia at the Murom apparatus plant (probably where Wolf is made)
Link Posted: 9/12/2010 7:09:01 PM EDT
[Last Edit: 9/12/2010 7:22:48 PM EDT by AssaultRifler]
Get the second or the third, not the QQQSR, from their site:








SMALL RIFLE PRIMER (part # QQQSR) - Used as a standard small rifle primer. Perfect for the 30 carbine and 223 standard loads. Many people use this primer in bench and other loads for the 223. This primer is a copper colored primer.

SMALL RIFLE MAGNUM PRIMER (part# QQQSRM) - This is the primer we had before for use in the 5.56 loads and hot 223 loads. A thick cup for the higher pressure. We sold a lot of these primers earlier this year. The new lot is brass colored instead of nickel.

SMALL RIFLE 223 (part # QQQSR223) NEW NEW This is the newest primer available in the Wolf line. It is ever so slightly hotter than the small rifle magnum primer and it comes with a brass colored thick cup. This primer can be used in place of the SRM primer or used when a different powder is used that is hard to ignite.

Wolf primers look great. They are made in Russia and packaged in 100 rd trays in 1000 sleeves and 5000 cases. They are packed anvil up so no "primer flipping" required. They are ALL BRASS and our tests indicate excellent quality at a lower price than other primers.

Link Posted: 9/12/2010 7:18:39 PM EDT
I ORDERED THE MAGNUMS BECAUSE SOME GUYS WERE SAYING THAT THE REGULAR ONES CAN SLAM FIRE. I DUNNO HOW TRUE IT WAS BUT BETTER SAFE THAN SORRY AND ON WIDENERS SITE IS SAYS THEY ARE THE SAME JUST DIFFERENT CUP HARDNESS.

Link Posted: 9/12/2010 7:31:12 PM EDT
OK, here"s this then. I am planning on building a 20" AR 15. I am going with a light trigger. I probably don't want the hard cup?
Link Posted: 9/12/2010 7:44:22 PM EDT
Link Posted: 9/13/2010 7:56:33 AM EDT
A light trigger pull does not mean you will have a light firing pin strike. The chamber pressure the round produces determines which primer cup thickness
is best for your rifle. Also the firing pin indent that occurs on the primer when the bolt slams a round into the chamber can cause a "slam fire" if forceful enough.
That possibility is another reason to choose a thicker primer cup. Best is the thicker cup, even if using light powder charges.
Top Top