1911Tuner
Moderator Emeritus
Jammer's Update
I got an E-mail early this mornin' on Jammer's ramge trip. He reports:
150 rounds without an extraction problem (total of 400 to date since the repair) and one failure to go to battery from a slidelock reload. Likely due
to either the height of the barrel in relation to the incoming round, or the
extra tension on the top round due to the heavier magazine spring in the
stick that I loaned him. I didn't experience any failures to RTB, but our two frames may enough dimensional difference to place the barrel a few thousandths higher than it was with mine. I was able to feed the top round by pushing on the unsprung slide with my fingertip, so the extractor tension is good.
He also reports that locking the Wilson magazines in the gun with the slide in battery was easier because of the softer spring.
The most likely place to have a FTF or FTRTB is on the last round...and the
first round from a slidelock reload with a topped-off magazine, and using the slidestop to release the slide. The last round issue is solved...now we go to the top round problem.
His recoil spring may be due for a change, but given the ease which the gun feeds, it may or may not be a factor. It would have gone to battery
on my frame with a 10-pound spring or less.
Also the possiblity that the magazine doesn't lock as high into his frame
as it did into mine, and the top round didn't have as straight a shot at the chamber.
It could be a slightly tight chamber. It's already .003 inch shorter than minimum specs...It could be a little tighter as well. I didn't really focus on
the chamber dimensions beyond headspacing, and couldn't have done anything about it without a finishing reamer anyway...Mine was loaned
out 3 years ago, and I haven't seen it since.
It could have been that one round was slightly out of spec on the OAL or
the bullet wasn't seated straight...or the rim diameter was a little oversized
and caused the extractor tension to be excessive...but only a slight chance.
It could be a stackup of everything mentioned above...and it could have been a fluke. More rounds downrange will tell the tale.
Jammer...Try a couple things for me, just for kicks. Next range trip:
Start with one up the spout and the magazine topped off to see if it feeds that top round during live fire.
Top off the magazine and slingshot the slide to chamber the first round.
it may just be a matter of slide travel and momentum. If it doesn't fail, you may want to get a Wolff 16-pound spring.
Standin' by...
I got an E-mail early this mornin' on Jammer's ramge trip. He reports:
150 rounds without an extraction problem (total of 400 to date since the repair) and one failure to go to battery from a slidelock reload. Likely due
to either the height of the barrel in relation to the incoming round, or the
extra tension on the top round due to the heavier magazine spring in the
stick that I loaned him. I didn't experience any failures to RTB, but our two frames may enough dimensional difference to place the barrel a few thousandths higher than it was with mine. I was able to feed the top round by pushing on the unsprung slide with my fingertip, so the extractor tension is good.
He also reports that locking the Wilson magazines in the gun with the slide in battery was easier because of the softer spring.
The most likely place to have a FTF or FTRTB is on the last round...and the
first round from a slidelock reload with a topped-off magazine, and using the slidestop to release the slide. The last round issue is solved...now we go to the top round problem.
His recoil spring may be due for a change, but given the ease which the gun feeds, it may or may not be a factor. It would have gone to battery
on my frame with a 10-pound spring or less.
Also the possiblity that the magazine doesn't lock as high into his frame
as it did into mine, and the top round didn't have as straight a shot at the chamber.
It could be a slightly tight chamber. It's already .003 inch shorter than minimum specs...It could be a little tighter as well. I didn't really focus on
the chamber dimensions beyond headspacing, and couldn't have done anything about it without a finishing reamer anyway...Mine was loaned
out 3 years ago, and I haven't seen it since.
It could have been that one round was slightly out of spec on the OAL or
the bullet wasn't seated straight...or the rim diameter was a little oversized
and caused the extractor tension to be excessive...but only a slight chance.
It could be a stackup of everything mentioned above...and it could have been a fluke. More rounds downrange will tell the tale.
Jammer...Try a couple things for me, just for kicks. Next range trip:
Start with one up the spout and the magazine topped off to see if it feeds that top round during live fire.
Top off the magazine and slingshot the slide to chamber the first round.
it may just be a matter of slide travel and momentum. If it doesn't fail, you may want to get a Wolff 16-pound spring.
Standin' by...