Lake City Brass - primer pocket problem
- Thread starter Mudduck
- Start date
Mudduck
Here in the lower 48 Lake City brass is very desirable because the brass is made "heavy duty" and made to higher standards than commercial brass. Because of this it is a favorite with owners of M1 Garands that are hard on cases and anyone one else wanting longer case life. There is nothing wrong with your Lyman case prep center or your Lake city brass and all you need to do is load it with a upper mid range load and fireform it to your chamber. I say this because your brass "might" be a little short for your chamber and your first firing will be critical to fit your chamber without letting it stretch in the base web area and begin to cause case head separations.
Below I use a Lee depriming tool to check my newly seated primers, if I can push the primer out with just finger pressure the case goes in the scrap brass bucket.
You can also buy pin gauges that are smaller and larger than the size of the primers you are using and use them as GO NO-GO gauges before seating your primers.
Below on a .223/5.56 case the gauge entered the primer pocket and the case is NFG and goes in the scrap bucket.
People who don't check their primer pockets end up with a bolt face that looks like the one below.
The photo below was posted by someone who said it was cheaper for him to replace the the bolt than worry about loose primer pockets.
Here in the lower 48 Lake City brass is very desirable because the brass is made "heavy duty" and made to higher standards than commercial brass. Because of this it is a favorite with owners of M1 Garands that are hard on cases and anyone one else wanting longer case life. There is nothing wrong with your Lyman case prep center or your Lake city brass and all you need to do is load it with a upper mid range load and fireform it to your chamber. I say this because your brass "might" be a little short for your chamber and your first firing will be critical to fit your chamber without letting it stretch in the base web area and begin to cause case head separations.
Below I use a Lee depriming tool to check my newly seated primers, if I can push the primer out with just finger pressure the case goes in the scrap brass bucket.
You can also buy pin gauges that are smaller and larger than the size of the primers you are using and use them as GO NO-GO gauges before seating your primers.
Below on a .223/5.56 case the gauge entered the primer pocket and the case is NFG and goes in the scrap bucket.
People who don't check their primer pockets end up with a bolt face that looks like the one below.
The photo below was posted by someone who said it was cheaper for him to replace the the bolt than worry about loose primer pockets.
if you fired cases with primers only there isn't enough preasure to drive the primers back in. super light loads sometimes shoe the backed out primer. as long as you haven't reamed the hell out of the pockets your brass should be fine. load up a few starting loads and test them should be fine.
