Posted: 12/8/2007 2:04:51 PM EDT
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What causes this in my SA Mil-Spec (Model PB9108LP) - I'm using Wilson 8 round mags, Remington 230 gr. Golden Sabers and a Wolff 16 lb. recoil spring. After only two loadings, the round is no longer unusable... |
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1. All 1911s will cause this to SOME extent (some MUCH more than others) 2. Ammo may make a significant difference. I noticed Federal Hydra Shoks were VERY good preventing setback. Gold Dots were not as stable. 3. YOU are the biggest contributor. Do you Slingshot/drop the SS at full force, or do you ride the slide? Riding the slide makes it much easier on the bullet. |
I slingshot that sucker...do you think the magazine may have something to do with it? |
| absolutely, the mag can have a lot to do with it. If the mag isn't presenting the bullet high enough, the nose of the projectile bumps lower on the ramp instead of sliding smoothly into the chamber. Try using a 7 rd mag with Wolff +5% springs and see if anything changes. |
Will do...someone told me that the standard 7 round mags will provide the best results. |
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This guy on m1911.org made a bullet setback test fixture/cotraption that isolated the effect of the feedramp from the chamber. He determined that the bullet hitting the feedramp caused 80% of the setback and the top of the chamber was responsible for the rest. The best medicine for avoiding bullet setback is to leave the gun loaded. |
While true, that's some shitty medicine, and totally unnecessary. I clear my weapon on average of 3 times weekly at a minimum and was able to carry Hydrashoks 3 years without setback. Do it correctly and you have the ability to clear to your hearts content for VITAL dry fire practice, cleaning, etc. |
| Hmmmm.... $2k+practice Wilson? Uhhhhh nah. I think my way makes a lot more sense. I am sure the Federal adhesives thing was a leading cause, but once I realized you couldn't drop the slide on GDs with a tight gun I've had zero problems re-loading them for well over a year now as well. |
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I definitely agree with that sentiment (for other reasons), and I have my share of 1911s, but I only have ONE Wilson, and the next one would not be its identical twin (apparently I have Twinitis disease, and refuse to do that with my CCW). Given the unique trigger, checkering, and sights, the most beneficial practice is done with what I carry and it's not worth leaving it loaded and substituting a modern 4" CCW with night sights with 5" 1911A1 etc. |
| While we're on bullet setback a lot of kabooms have been contributed to officer's rechambering the same bullet time and time again. You need to develop a method of rotating your rounds in the mag every so often so the same round isn't getting rechambered all the time. |
Please tell us more about the reloading setup you used to load those Golden Saber bullets. My hunch is your resizing die is the cause of your setback problems. |
+1........ All semi autos will eventually cause bullet set back if you chamber the same round often enough. Either Store the gun loaded or begin a routine inspection and rotation of your carry ammo. |
The Golden Sabers are factory loads. I resolved the issue by using my hand to draw the slide to the rear and bring it forward into battery instead of allowing the recoil spring to control the forward motion of the slide. This seems to have eliminated slamming the round into the feed ramp causing the set back issue. I've loaded the same round 14 times without any effect on the O.A.L. |