Hello Gentlemen,
I am leaving for a moose trip to Newfoundland in three weeks. I have been shooting a Barnes 180 TTSX out of a 300 Win Mag. I shot my last bullets out of the rifle this week and cracked open a new box to get ready for the trip. I also have fresh brass because my last batch gave up the ghost on the primer pockets.
I am having neck tension issues. I am using a Lee FL sizing die and seating die which I have never had an issue with before. The dies and expander is clean.
When seating the bullet, there is plenty of tension and the bullet is retained in the case if I dont seat it all the way down. If I continue to seat the bullet into its final position it loosens as soon as the case neck rides over the relief bands in the bullets.
I measure a sized case: .304" ID
I measured a bullet base: .308"
I measured the bearing diameter over the reliefs: .308"
At this point I figured... hmm the case probably needs annealed. I annealed the case... no change. Still loose enough I can spin the bullet with my fingers.
For shits and giggles I seat a 212 ELDx. No issues... nice and consistent feel when seating. Well retained bullet.
Any help would be appreciated. What the heck is going on?
I am leaving for a moose trip to Newfoundland in three weeks. I have been shooting a Barnes 180 TTSX out of a 300 Win Mag. I shot my last bullets out of the rifle this week and cracked open a new box to get ready for the trip. I also have fresh brass because my last batch gave up the ghost on the primer pockets.
I am having neck tension issues. I am using a Lee FL sizing die and seating die which I have never had an issue with before. The dies and expander is clean.
When seating the bullet, there is plenty of tension and the bullet is retained in the case if I dont seat it all the way down. If I continue to seat the bullet into its final position it loosens as soon as the case neck rides over the relief bands in the bullets.
I measure a sized case: .304" ID
I measured a bullet base: .308"
I measured the bearing diameter over the reliefs: .308"
At this point I figured... hmm the case probably needs annealed. I annealed the case... no change. Still loose enough I can spin the bullet with my fingers.
For shits and giggles I seat a 212 ELDx. No issues... nice and consistent feel when seating. Well retained bullet.
Any help would be appreciated. What the heck is going on?
