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Soot in primer pocket , first firing ?
- Thread starter 06shooter
- Start date
It sounds to me that you just fire formed the brass. How do you install the primers? Do you uniform your primer pockets. Do you recall the resistance wile seating the primers? Where did you get the load from and is that the primer that was recommended. Can you see whare the gas leak is coming from? Is it the primer edge or from the firing pin? Are you working up the loads 3 at a time? Are the primers flowing or cratering?
The carbon at the primer sounds like a gas leak at the primer. That is common cause of high pressure. Since these are new cases and primers were feeling normal tension when seated. The pockets were good. I wonder if the flash holes are over size or larger than norm. I just had found some in my pistol cases. If the cases have oversize flash holes it seams the pressure may spike. How about since you mentioned 53.0-57.0gr. of powder that is the full min. to max. loads. Perhaps the gas leak or (soot) happened at or near max. Are you able to determine witch cases are witch loads? You may be seeing the start of over pressure loads. If you can determine where the loads started to soot you could back off from there a bit maybe a grain or two.
To continue with gas leaks at the primer could burn a hole in the bolt face.
To continue with gas leaks at the primer could burn a hole in the bolt face.
A good chronograph will answer your question regarding the weak primer.
The "soot" in the pockets is normal. That is why there are primer pocket cleaners on the market. If you have no residue in the pocket, then I would say that primer failed to fire. Granted, sometimes there is more deposits than others.
The "soot" in the pockets is normal. That is why there are primer pocket cleaners on the market. If you have no residue in the pocket, then I would say that primer failed to fire. Granted, sometimes there is more deposits than others.
Imr 4350 have little soot in the primer pockets and a lot on others
Fouling in the primer pocket's are normal. You do realize that when the firing pin hits the primer the primer backs out of the case to the bolt face and the case itself follows a fraction of a second later? The speed at which the case re-seats the primer is one of the ways to watch for over pressure. Either the primer will go back in normally or be flattened (over pressure).
The amount of fouling you are seeing in the primer pocket is more due to the type of powder used, if there is no gas leaks in the primer itself. If there were gas leaks from the primer you would see scoring (burn marks) on the bolt face itself. This happens most often from pierced primers by the firing pin or lose primers in a semi-auto rifle.
I personally like H-4895 for 30-06 it produces excellent results.
Sorry, but dirty primer pockets are a fact of life for re-loaders, that is why some use stainless steel pins and wet tumbling to clean them up. Me, I like dry media and don't care if the primer pocket's are dirty as long as the primers fit tight and snug where they should.
Stay safe.
Jim
have little soot in the primer pockets and a lot on others
Soot on the case head would be a problem, if soot did not get past the primer the primer did all it was designed to do.
F. Guffey
06Shooter, fouling in primer pocket is normal, if some are fouled more them others I feel its do to primers set at slightly different heights. Get your self a primer pocket uniformer it will cut your pockets to the same exact depth. You should feel your primer bottom out in pocket, better seal. When we look to produce the best in our reloads, everything should be exast even the primer pocket & flash hole. The gas didn't get past the primer, didn't flatten out from overpressure. You were fine, make sure you feel the primer bottom & clean out the flash hole. Be Safe, hope I helped.