Posted: 6/24/2008 2:04:28 AM EDT
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I have a SA M-S that I bought a long time ago and probably shot a few hundred rounds of wolf. I knew right from the begining that it didnt like wolf but I had a bunch and shot it up. I also remember shooting a 100 value pack of WWB and not having any problems. Then about 9 months ago I loaned the pistol to my dad for home protection. He didnt shoot it at all, it just sat in the box. Well I got it back about a month ago and finally got around to shooting it. I also got a Stainless Chip Mc power mag thinking that the shitty factory SA mags might have been causing problems. Anyway at the range the other day I used only the power mag and shot a full box of CCI Blazer Brass(not the best, I know) and had 3 jams out of 50. All 3 jams were the same. The slide jammed almost all the way forward with a round almost in the chaimber. The slide was about 1/4 of an inch from being fully forward like it should be. I did a light polish job on the bbl ramp and feed ramp a long time ago, so that is already done, what else can be done? I was thinking of carrying this for CCW in the future, however now Im almost tempted to trade it for something else. What can I other than try different ammo? I will buy another 100rnd WWB and give that a try sometime in the near future. Thanks for any advice 
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+1, or Wilson mags.  I'm not a Checkmate fan, had bad experiences with their B92 mags. Have heard good things about their 1911 mags but have no experience with them. |
I wonder if your mainspring is up to snuff? Try a stronger mainspring, especially if you wish to CCW this piece. Is the chamber fully cleaned? Was this reloaded ammo? If so, the ammo is suspect. Do you label your mags? ALWAYS label them, so you can tell if a malfunction occurs with only 1 mag. Also, check the face of the slide, around the firing pin, for roughness. I revamped a WWII 1911 and part of the process was shining up that part of the slide (it was jamming much the same way as you describe). The gun hasn't failed in over 2000 rounds. |
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I had the recoil spring in a SA WW2 lose tension in a few hundred rounds. Had the same issue as you. Replaced it and it worked fine. The pistol was bought maybe 3 years ago or so,[NIB by me] I'm betting they had a batch of them go thru heat treating and something went wrong. I replaced it with a Wolff, ran it for a while and sold it to a friend who has shot it frequently since, usually with WWB and Blazer Brass, he's had no issues. I did replace the extractor before I sold it with a NOS USGI one and tensioned it properly, that'll last a long time. |
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Thanks for the advice guys. I probably should get a new recoil spring, I have read that these need replacing from time to time. I was shooting Blazer Brass(not reloaded, but not the best) using a Chip McCormick Star mag or what ever. This gun was as clean as it should be to work correctly. I cleaned it and oiled it up a day or two before I took it to the range. I like clean guns. The polish I did to the ramp area was done using a little bit of polishing compound and a cloth, so I doubt that had any real effect other that smoothing the surface. So the 18.5 Wolf spring is the best? where can I find one online? 
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I have the same pistol and had similar problems the first time out last year...afetr replacing the OEM recoil spring with a Wolff 16 lb spring, the problems went away. You should not have to polish anything for it to feed whatever you stoke it with I'm using 8 round Wilson and McCormick Power Mags and always with a thin film of Plastilube on the rails. Brownells is a good source for parts. |
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Also Midway carries them. Wolff @ Midway If you have any place local to you that might carry say the Wilson springs, you could go that route as well. Not sure what gun shops you have in your area. |
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I had the exact same problem a while back, with a Springfield Loaded, with a brand-new Wolff 18.5lb recoil spring. Also with Blazer Brass ammo. Slide would strip a round from the mag, go forward, then stop a little short of actually chambering. I found that a good solid upward whack on the magazine generally cured it, but I also have quit using BB ammo. Good luck and if you find a solution, please post it! inquiring minds, and all that... |
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If your gun has less than a few thousand rounds through it, I doubt it's the recoil spring. I'd try some WWB or AE ammo first. The bullet shape, overall length, or cartridge rim on the Blazer just might be different enough to give you trouble. If you have a friend with a 1911, try some of his mags. |