30-30 Winchester brass PRIMER is the culprit, methinks.

ipscgraz

ipscgraz

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Edit to add: I just primed some brand new 44 Mag brass, and had a difficult time seating the primers again. Ginex large rifle, again.

Micrometer to the rescue: CCI = 0.2107 inch. Ginex = 0.2114 inch. I will mic a few more.


I have had a Marlin 336 in the safe for a long time, and hardly ever used it, partially because i don't like buckhorn sights. With my eyes getting older I decided to put a scope on it and now the rifle is a joy to shoot.

Two questions on reloading:

1/ During priming, the primer tends to sit slightly proud of the base and not flush with the case material around the primer pocket. Even using a RCBS Rockchucker and a substantial amount of force, the primer is still proud enough that the rifle bolt will not always lock up, with 1/8 inch of clearance from the lever to the tang lower surface.

I have had better luck inserting a 1/4 inch dowel into the mouth of the case and tapping firmly on it with the case head resting on a flat piece of metal; basically using the Lee Loader method of primer insertion.

This is both with CCI and Ginex primers and brass of various headstamps .

Anybody else run into this?


Secondly, I have had 3 or 4 misfires out of around 60 rounds with the Ginex primers...all but one fired on the second firing pin strike. Looks like a light strike. Anyone else have that happen...is a 336 with a 2 piece firing pin prone to light strikes?
 
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I have a bunch of .30-30 brass from all the big names. Most need uniforming for that issue. It's a crap job but only needs done once. Power tools are the only way, doing it by hand is terrible. Most power case prep centers have uniformers or you can buy ones to chuck in a hand drill.
 
I never had any issues reloading it but I do believe I used Winchester primers
I would use the primer pocket uniform tool and see if that helps
 
Similar experiences here with 30/30 brass (as well as 30-06 brass) . And the common thread is the Ginex primers. So, in order to ensure the primers are seated flush, I use a Lee Ram Prime and that provides a little more “oomph”. I also experience the occasional misfire. They usually fire on the 2nd try … but last time at the range (2 days ago) it took 3 tries. I was shooting a Savage 219B in 30/30.
 
I haven’t had any high primer issues but I don’t use Ginex as I have CCI, federal and Winchester. I laid in a supply before the shortage. I did have an issue on some 30-06 brass I was using for the Garand. Some down normal and some flush. I uniformed the pockets. Was Remington brass. Wasn’t looking for a slam fire.
 
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