Wolf Small Rifle Magnum Primer hang fires

[Mike Conroy]

Hi all,

I recently put together a 6.5x47 Lapua. I was advised to use small rifle magnum primers. I loaded these primers 2x now and on both 100 round load work ups, I had about 4-5 hang fires. I was shooting a 140 grn Hornady ELD M over 37 to 37.5 grains of Varget, and when you'd pull the trigger, there would be a noticeable felt split second delay, causing the shot to become erratic and miss the point of aim.

I am knew to this cartridge, have always shot .30 cal and have never had any issues with Wolf large rifle magnums.

Please advise if you know about any issues.

Thanks,

Mike

 

[Terry]

I have used them for years. If they are seated firmly, they work well.

 

[Mike Conroy]

I hand seated these. I never use the press to seat primers.

 

[rsmithsr50]

so define hand seated ?
(to the bottom of the pocket, and a small crush in place)
I have no issues with wolf nor tula primers( same plant)

 

[Mike Conroy]

I seat the primers all the way down inside yhe pocket

 

[tomswede]

I have shot a few thousand of the 556 primers without issues in my AR’s. Also have used their LR primers. Actually a quality product out of Russia. Have they been stored in good conditions?

 

[rsmithsr50]

lol
it is nearly impossible to deactivate a primer.
I am using some that were in a flood !
dried and work fine

Have they been stored in good conditions?

 

[morpheus]

I have the exact same problem, with about the same frequency, even when I very firmly and deliberately seat the primers down hard. I wonder if they are more problematic when pushed into tighter primer pockets? I got tired of dealing with this and stopped using them for anything other than .223, where they work fine every time. I have heard of other shooters having the same concern, so I wonder if we might all have the same "suspect" lot, since other people claim they never have problems.

 

[Stumpy1]

Mike,

Just out of curiosity, what action are you shooting? It might be a weak firing pin spring, or insufficient firing pin fall.

I had issues with a Barnard action with the standard striker spring. Replacing the spring with their 'heavy' spring solved the problem.

Hope this helps,

Frank

 

[dolek]

lol
it is nearly impossible to deactivate a primer.
I am using some that were in a flood !
dried and work fine

In your squirt gun ?
Sweet story either way .

 

[243winxb]

To much primer output, gas, may move the bullets to soon. Add in light neck tension & this adds to the problem. At times, there is a secondary pressure spike.

I would try increasing neck tension as a test. .002" minimum. For the test, more nt.

https://apps.dtic.mil/docs/citations/ADA622138

And https://www.shootingtimes.com/editorial/ammunition_st_mamotaip_200909/100079

 

[Rocketvapor]

Off Topic,
Want to permanently deactivate a primer?
Dot 3 Brake fluid.
Try it with a few, soak em then look at them

 

[Liven The Dream]

2 cents !

The Wolf SRP Mag work 100% of the time in my AR Loads …………….

In my Norma Dasher and Peterson .308 SRP Brass 96% light up ..
All Brass Prep when New .
21st Century Primer Tool

CCI 450 Never Miss ..

 

[Keith Glasscock]

I ran into this problem the other day while testing a different firing pin spring rate.

as weird as it sounds, hitting them really hard causes some hangfires and poor ignition (sounded hollow).

The normal spring rate didn’t have any problems.

I don’t have the first clue why, but it is an observation.

 

[Raythemanroe]

These primer threads come up regular, although I have not used wolf primers I believe it's rarely a primer issue. I see in most cases if not all it is a failure in sizing/seating and sometimes with the fire control. Start with measuring a fired case and only bumping it a couple thousandths and then make sure the primer pockets are uniform to an acceptable depth. Then make sure they are fully seated and I will bet they start working properly.

Ray

 

[1lnbrdg]

Double-check the headspace. If it's too long, will cause primers to miss-fire.

 

[rkj1313]

Have had same problem, older batch of Wolf SRM, don't use those for when it counts.

 

[Spook]

never an issue with Wolf primers , wish I could say the same thing about ELD-M's.

 

[searcher]

I have used both the Wolf and the Tula magnum .223 primers (both from the same Murom Apparatus (?) plant in Russia) extensively in about a dozen rifles. I too had a few problems with them but the problems were always traceable to the primer not being forcefully struck. These primers must get the full strike of the firing pin. Not getting the needed force is usually related to:

1) Shoulders being excessively pushed back.
2) Leveling primer pockets which reduce firing pin extension
3) Not fully seating primers
4) Weak spring
5) Large chamber length dimension and brass not yet fired in your chamber

Usually - it is going to be the shoulders eight out of ten times. People will push them back maybe five thousandths and then maybe level the primer pockets, taking off another .001" or .002" - or maybe shooting new, unfired brass in a "large" chamber. I know this from having done those very things. After your brass has been fired in your chamber, properly resized without more than .003" shoulder bump - most people will never have a problem with them unless one of the other conditions apply such as primer pockets having been reduced, etc.

 

[msalm]

I had this issue with slow powders and a 22 CM I put together. I was using Peterson SRP 6mm Creed brass. It was the small flash hole that did it for me. I opened it up with an internal chamfer tool and all hangfires disappeared.