Difficult Extraction... - Page 2

Longshot4 · October 7, 2015, 06:43 PM

Last year I had a problem with some cases being tight on bolt extraction. I had been neck sizing only. I believe the problem was that the cases had been shot so many times that some failed to spring back after the shot. I annealed and bumped the case shoulders back .002 and the problem went away. You can avoid variability by always lock the die ring when forming cases.

GeauxTide · October 8, 2015, 11:46 AM

Unclenick is a TREASURE!

T. O'Heir · October 8, 2015, 01:26 PM

"...don't start new threads too frequently..." You start really good ones when you do though.
I'm thinking it's a tight chamber combined with max or near max loads thing. The latter can cause odd pressures in tight chambers. Just a WHAG though.
"...The 2.810" number is the SAAMI max..." And is not measured to the Ogive.

October 8, 2015, 01:26 PM	#28
T. O'Heir Senior Member Join Date: February 13, 2002 Location: Canada Posts: 12,453	"...don't start new threads too frequently..." You start really good ones when you do though. I'm thinking it's a tight chamber combined with max or near max loads thing. The latter can cause odd pressures in tight chambers. Just a WHAG though. "...The 2.810" number is the SAAMI max..." And is not measured to the Ogive. __________________ Spelling and grammar count!

October 7, 2015, 06:43 PM	#26
Longshot4 Senior Member Join Date: February 22, 2014 Posts: 868	Last year I had a problem with some cases being tight on bolt extraction. I had been neck sizing only. I believe the problem was that the cases had been shot so many times that some failed to spring back after the shot. I annealed and bumped the case shoulders back .002 and the problem went away. You can avoid variability by always lock the die ring when forming cases.

October 8, 2015, 11:46 AM	#27
GeauxTide Senior Member Join Date: April 20, 2009 Location: Helena, AL Posts: 4,425	Unclenick is a TREASURE!