Hi,
Today I tested a new load:
* Caliber: .30-30 Win
* Bullet: Hornady .308 170 gr (#3060)
* Powder: 0.570 gram of Vihtavuori N32C
* Primer: CCI LR Primer
Additional info:
* I had no problem with 0.560 gram of Vihtavuori N32C
* I'm sure of the load because I weight each of my cartridges before and after I drop the charge into the case
* Some of the cartridges were loaded with 0.575 gram instead of 0.570 gram due to the precision of my powder measure (Lee Auto-Drum powder measure)
* I didn't measure the speed with a chronograph for this bullet but it was subsonic, there was no supersonic crack
* I shot it in my Marlin 336 XLR
So, I shot the cartridge and then I couldn't extract it. The extractor/bolt would open fine but the cartridge was stuck inside the chamber. I had to pull it a little with a thin knife blade (took care not to mess up with the gun itself), then tried again to close the bolt and the extractor finally extracted it.
The case has a deformed mouth (it's not a regular circle anymore) and on the body of the case there are many very little dots/holes, like they were "engraved" into the brass.
Plus, now, with some cases (not all), my Marlin lever won't lock anymore when there is a case in the chamber (and won't extract it either), even if it's a brand new/non-fired cartridge.
This locking problem/hard extraction problem also happened when the gun was brand new with manufactured cartridges and before I shoot any of my hand loaded ammo. Since the gun was brand new and the ammo brand I was shooting was quite popular/not cheap I thought it was normal. Note the extractor never failed to extract a cartridge before, even if it was sometimes hard (again, with the manufactured ammo).
So I got two questions:
* Is it likely there was an over pressure?
* What can be so wrong that now my lever won't lock and the extractor won't work literally half of the time?
Thanks for the help!
Today I tested a new load:
* Caliber: .30-30 Win
* Bullet: Hornady .308 170 gr (#3060)
* Powder: 0.570 gram of Vihtavuori N32C
* Primer: CCI LR Primer
Additional info:
* I had no problem with 0.560 gram of Vihtavuori N32C
* I'm sure of the load because I weight each of my cartridges before and after I drop the charge into the case
* Some of the cartridges were loaded with 0.575 gram instead of 0.570 gram due to the precision of my powder measure (Lee Auto-Drum powder measure)
* I didn't measure the speed with a chronograph for this bullet but it was subsonic, there was no supersonic crack
* I shot it in my Marlin 336 XLR
So, I shot the cartridge and then I couldn't extract it. The extractor/bolt would open fine but the cartridge was stuck inside the chamber. I had to pull it a little with a thin knife blade (took care not to mess up with the gun itself), then tried again to close the bolt and the extractor finally extracted it.
The case has a deformed mouth (it's not a regular circle anymore) and on the body of the case there are many very little dots/holes, like they were "engraved" into the brass.
Plus, now, with some cases (not all), my Marlin lever won't lock anymore when there is a case in the chamber (and won't extract it either), even if it's a brand new/non-fired cartridge.
This locking problem/hard extraction problem also happened when the gun was brand new with manufactured cartridges and before I shoot any of my hand loaded ammo. Since the gun was brand new and the ammo brand I was shooting was quite popular/not cheap I thought it was normal. Note the extractor never failed to extract a cartridge before, even if it was sometimes hard (again, with the manufactured ammo).
So I got two questions:
* Is it likely there was an over pressure?
* What can be so wrong that now my lever won't lock and the extractor won't work literally half of the time?
Thanks for the help!