Light primer strikes on reloads, first reloads....

[1975CJ5]

Just loaded 40 30-06 rds and had 6 misfires, light primer strikes. Tried em again and no go. Primers feel that they are seated properly. Seated em with a Hornady press. I did use large rifle Winchester magnum primers though. This was my first time reloading, my friend who reloads alot said that it is safe to load magnum primers in standard rifle cases as in 30-06, but not a good idea to load standard for a magnum rifle case. No signs of over pressure, groups averaged 1 MOA at 100 yds. All other reloads fired fine and had a deeper primer strike. Do you think that my firing pin is short, or spring is weak? I'm using a post 64 push feed Winchester model 70. I cleaned it and disassembled the bolt, no fouling or debris blocking it's movement. I bought it new a few months ago on gunbroker. It's a new 1980's model that still had the tags on it. Primer strikes are just a tad off center, almost centered though. I've fired 140 rds of factory Remington Corelokts before reloading and never had a misfire. Any ideas, Outside temp was 7 above zero if that means anything.

Thanks Billy Jack

 

[turbo54]

Re: Light primer strikes on reloads, first reloads....

Sounds like your primers weren't seated properly. Next time, try seating, taking presdure off the ram, rotating the case 90-180°, then "re-seating".

Seating primers takes a feel that you need to learn. Also, fresh brass (if thats what you were using), tends to have tight pockets.

Did you try to restrike the primers that missed?

 

[colt933]

Re: Light primer strikes on reloads, first reloads....

I wonder if you have over-sized your brass - pushed the shoulder too far back.

 

[AKAce]

Re: Light primer strikes on reloads, first reloads....

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: colt933</div><div class="ubbcode-body">I wonder if you have over-sized your brass - pushed the shoulder too far back.</div></div>

+1

 

[milo 2.0]

Re: Light primer strikes on reloads, first reloads....

I'd take it to a smith, or sounds like you can do it yourself, I'd say it was the spring. Probably sat with a cocked bolt for extended period of time.

 

[bigwheeler]

Re: Light primer strikes on reloads, first reloads....

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ~Ace~</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: colt933</div><div class="ubbcode-body">I wonder if you have over-sized your brass - pushed the shoulder too far back.</div></div>

+1 </div></div>
+2

 

[JGorski]

Re: Light primer strikes on reloads, first reloads....

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Billy Jack</div><div class="ubbcode-body">Just loaded 40 30-06 rds and had 6 misfires, light primer strikes. Tried em again and no go. Primers feel that they are seated properly. Seated em with a Hornady press. I did use large rifle Winchester magnum primers though. This was my first time reloading, my friend who reloads alot said that it is safe to load magnum primers in standard rifle cases as in 30-06, but not a good idea to load standard for a magnum rifle case. No signs of over pressure, groups averaged 1 MOA at 100 yds. All other reloads fired fine and had a deeper primer strike. Do you think that my firing pin is short, or spring is weak? I'm using a post 64 push feed Winchester model 70. I cleaned it and disassembled the bolt, no fouling or debris blocking it's movement. I bought it new a few months ago on gunbroker. It's a new 1980's model that still had the tags on it. Primer strikes are just a tad off center, almost centered though. I've fired 140 rds of factory Remington Corelokts before reloading and never had a misfire. Any ideas, Outside temp was 7 above zero if that means anything.

Thanks Billy Jack </div></div>

I had the same problem with my post 64 Model 70, so I had a heavier spring put in, the problem went away after that. Mine is an 06 also, and I never use magnum primers, get great results with WLR or CCIBR2 primers and 210M, too. BTW, all my misfires were with WLR primers, but now theyre fine.

 

[JGorski]

Re: Light primer strikes on reloads, first reloads....

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: colt933</div><div class="ubbcode-body">I wonder if you have over-sized your brass - pushed the shoulder too far back. </div></div>
If that were the case his primers would be flattened, are they?

 

[JGorski]

Re: Light primer strikes on reloads, first reloads....

I got this one from Wolf.
http://www.midwayusa.com/product/567848/wolff-extra-power-firing-pin-spring-winchester-70-30-lb

 

[1975CJ5]

Re: Light primer strikes on reloads, first reloads....

I'm gonna order the new spring, it's a backordered item though. Thanks Billy

 

[JGorski]

Re: Light primer strikes on reloads, first reloads....

They might have them here, too, I got the 30lb.
http://www.gunsprings.com/index.cfm?page=items&cID=2&mID=120

 

[colt933]

Re: Light primer strikes on reloads, first reloads....

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: JGorski</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: colt933</div><div class="ubbcode-body">I wonder if you have over-sized your brass - pushed the shoulder too far back. </div></div>
If that were the case his primers would be flattened, are they? </div></div>

No, the firing pin might have shoved the case forward against the shoulder and the forward movement of the case was such that it moved away from the firing pin far enough that you got a light strike.

 

[MALLARD]

Re: Light primer strikes on reloads, first reloads....

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Billy Jack</div><div class="ubbcode-body"> my friend who reloads alot said that it is safe to load magnum primers in standard rifle cases as in 30-06, but not a good idea to load standard for a magnum rifle case.

Do you think that my firing pin is short, or spring is weak? I'm using a post 64 push feed Winchester model 70... factory Remington Corelokts before reloading and never had a misfire.

Thanks Billy Jack </div></div>

mag primes vs standard primers , i think just effects the way your powder burns , consistency in maxpressures and times to max pressure , If your using a "weak" primer , you might get secondary detonations , but , in SHTF moment , either one would do.

no its probably not your gun. Maybe what the others guys are saying although, if you had excessive headspace or over-sized your brass , you should be peircing and cratering primers , do you see signs of that ? Its possible they were just shitty primers , all the companies make shitty primers now , they are getting sloppy.

Or some other reason...

 

[btm_54]

Re: Light primer strikes on reloads, first reloads....

When the primers are not seated deep enough in the pocket they soak up energy sliding down in the pocket.
I had this problem
http://www.kmshooting.com/catalog/primer-seater-tools/primer-deluxe.html
Fixed it you can feel the primer seating and the anvil engage with the base of the primer pocket.
Hope this helps.

 

[Greg Langelius *]

Re: Light primer strikes on reloads, first reloads....

Generally, if the primer fires on the second strike, it's a good indication that the primer wasn't fully seated, and the first strike finished the seating job. Oversizing the shoulder sometimes also results in extraction failure.