First batch not all going bang!


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chevy bob
May 19, 2010, 12:24 PM
Hi,new reloader here.I've just reloaded my first batch of .30 carbine rounds and they are not all going BANG when I pull the trigger.About 1 out of 8 fail to fire,sometimes when I try them again,they fire.There are marks on the primer when I checked them.My recipe is-14.3 gr. of W 296 behind a 110 gr. Hornady FMJ with CCI 41 primers.COL is 1.680.I'm thinking maybe just bad primers but I'de like to hear opinions from the experts.Thanks in advance.

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MarcusT
May 19, 2010, 12:35 PM
Sounds like you are not seating the primers all the way and the first strike seats them.

GrimmLV
May 19, 2010, 12:40 PM
Sounds like you are not seating the primers all the way and the first strike seats them.

+1 to this

rcmodel
May 19, 2010, 12:40 PM
+1

The first thing to do is insure all the primers are seated fully in the case and bottomed out.

It could be your GI brass has crimped primer pockets. If that is the case, new primers would be very difficult to seat.
The fix is to ream the old crimp out of the primer pockets before repriming.

It is very unlikely you got a batch of bad CCI #41 primers.

rc

Jumping Frog
May 19, 2010, 01:11 PM
chevy bob, as people have mentioned, you probably aren't fully seating the primers. What they haven't mentioned is how to fully seat a primer.

When I was a brand new reloader, I remember carefully inserting the primer until the top of the primer was flush with the top of the primer pocket. I thought that was "properly seated". I went and had some failure to fire as well, or "second strike" shots.

That is when it was explained to me that "properly seated" means the top of the primer is a couple of thousands lower than the top of the primer pocket.

If you take a box of factory ammo and run your index fingertip across a row of cartridges, you will quickly feel how the primer is just slightly deeper than the surrounding case head. When you run your finger across your reloads, you want to feel the same little dip.

It is easier to feel than it is to describe.

SASS#23149
May 19, 2010, 01:49 PM
where ur primer pockets clean,or fairly so? I"m not a fanatic about it,but it can help if extra cruddy.
CCI's are the hardest to ignite,but if seated properly and the gun has not been 'tuned' by using light springs,they should all go bang.

sgte5
May 19, 2010, 02:41 PM
Possibly a head space problem also.

Walkalong
May 19, 2010, 02:44 PM
Perhaps, but I am betting high primers. :)

chevy bob
May 19, 2010, 02:53 PM
Thanks for all the quick info.I did use a primer pocket reamer to clean the primer pockets before priming with a Lee hand priming tool.The brass is once fired Aquila and not G.I.I just checked one of my misfires and it does seem that the primer is sticking up a hair.I can't seem to push hard enough on the priming tool {I guess I'm afraid of one going boom} to seat it,I guess.Thanks again all.

dakotasin
May 19, 2010, 03:03 PM
no worries about a boom... you may get a very loud pop that rings your ears... but no boom!

i use an rcbs hand primer so i'm not familiar w/ yours, however, i can feel when the primer is fully seated. i would expect your tool would allow the same feel.

also, it is not that easy to get a primer to fire on accident while you are seating. it sure can happen, but it most certainly is not an everyday occurence.

243winxb
May 19, 2010, 03:08 PM
The .30 Carbine headspaces on the case mouth, like an autoloading pistol cartridge, it must be taper crimped; do not roll crimp. To much of any crimp and you may get misfires. Spray the bolt with WD40 if an auto rifle. Or you shooting a Ruger?

Steve Marshall
May 19, 2010, 04:10 PM
There is no primer crimp on most, if not all, carbine brass. There is a possibility that you didn't seat the primers properly. There is also a strong possibility that the cartridge is not entering the chamber fully. This could be due to a dirty chamber, a poorly executed taper crimp or most likely, the ogive of the bullet not allowing the round to seat in the chamber properly. The OAL given is a suggestion. I have 2 carbines. Remington soft points have to be seated to 1.640" to work in both.

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