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Old 03-23-2020, 08:45 PM
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S.A. Micro Compact 45 smithing question S.A. Micro Compact 45 smithing question S.A. Micro Compact 45 smithing question S.A. Micro Compact 45 smithing question S.A. Micro Compact 45 smithing question  
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Default S.A. Micro Compact 45 smithing question

I have a Springfield Micro Compact 45 which is basically a slightly shrunk 1911 officers model. I'm trying to increase reliability with newer hollow points and other than the factory 6 round magazines. It's an anodized alloy (aluminum) frame and has a ramped barrel. I just polished the barrel ramp starting with 600 and finishing with 2000 grit paper.

I was about to polish the frame below the barrel which is kinda a pseudo-ramp as I've had a few rounds crash into that. But then I got to thinking that might be a mistake. Being aluminum it would polish up easily but would removing the anodizing coating there be a mistake?

It is already a bit shiny on the edge at the very top. I think it came that way. However, I don't want to make the metal softer there by removing the coating if that has potential to be an issue. Obviously I wouldn't be removing much metal, just enough to make it slick, but I expect the anodizing will be gone.

So what do you Smith smiths think?

I didn't put this in the smithing sub-forum as it's not a Smith.
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Old 03-23-2020, 09:02 PM
Steve912 Steve912 is offline
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Might be better to find a load that the pistol likes,
and leave that aluminum as-is.
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Old 03-23-2020, 11:01 PM
mckenney99 mckenney99 is online now
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My everyday carry is a SA Micro Carry and it is a little HP ammo picky. I spent quite a bit of time testing ammo when I first got it and before carrying it. I found that mine feeds Remington 185gr Golden Sabers perfectly. I use Wilson 7rd Officer Model magazines and the little gun just perks along. I loved this gun from the minute I picked it up. I just fits me perfectly. Found another Like New one on GB not long after I bought the first and I bought it also, as they had been discontinued.
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Old 03-23-2020, 11:26 PM
Loyaljeeper Loyaljeeper is online now
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I’m actually surprised to hear that Golden Sabers feed reliably. There are actually one of the more known to FTF hollow point. In my experience and research Winchester hollow points and Federal feed the most reliably in 1911s and especially officer sized 1911s. Stick to magazines that have a skirt on the follower like Wilson’s.

Last edited by Loyaljeeper; 03-23-2020 at 11:27 PM.
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Old 03-23-2020, 11:41 PM
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I bought one Wilson mag and liked it and bought 4 more. It turns out the one that works well was old stock. The other 3 don't work. The lips are just a tiny b it different. I even sent the non-workers back to Wilson. They were very nice and replaced them. Same feed lips as the ones I sent in. Oh well!

I've been trying to get it to work reliably with Gold Dot and HydroShock. Every time I think it's going great it fails to chamber one. I've tried Wilson, Chip McCormick and Kimber. Same deal. The best 7 round mag is the Armscor branded Act-Mag that came with my Armscor Officers Model. It works perfectly EXCEPT they are difficult to eject and I have to forcibly pull them out.

According to S.A. they are guaranteed to work with Hydroshocks but only with their 6 round mags.

Last edited by oink; 03-24-2020 at 04:42 PM.
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Old 03-24-2020, 04:55 PM
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Well, I'm fairly optimistic. Bubba got impatient and polished the ramp and the slightly sloped area inside the grip right below the ramp. There was a groove in that pseudo ramp inside the grip where sometimes some bullets were jamming. I couldn't see it until I started with the 600 grit paper but as soon as I started it was revealed.

I removed the groove and continued polishing, finishing with the 2000 grit. I'd have used 3000 grit if I had any. I do have Turtle Wax polishing compound and scratch remover but I think it might be coarser than the 2000 grit paper.

Well anyhow after about 40 rounds of Hydro-shock I had no issues. Obviously that ain't enough but it's promising. At the moment I can't find those new Wilson mags. I want to try those again.

It is a very nice shooting gun, when it is, for such a little 1911. Yeah, I know I could just use the lower capacity factory mags, but I don't want to.
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Old 03-25-2020, 07:02 AM
stansdds stansdds is offline
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Do not polish the receiver. The receiver is aluminum which has an anodized finish. The anodizing creates a very thin layer of aluminum oxide, which is very hard. If the anodizing is removed, bullets can damage the underlying aluminum.


I would suggest either different ammo or different magazines to get reliable feeding.
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Old 03-25-2020, 08:13 AM
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Another thing to consider , the smaller the 1911 the more particular they are about feeding ... find an ammo it likes .
The bullet is already .451" in diameter , don't get all hung up on hollow point ammo . Chances are from the short barrel you will get 0 expansion .
Find an ammo that is 100% ...hollow point be hanged .

Don't remove the hard anodizing finish...the softer aluminum will want to hang on to the bullet ... just leave it alone , it's a slick finish... just like the new hard anodized frying pans that nothing sticks too , as seen on TV .
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Old 03-25-2020, 01:38 PM
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Too late, Bubba already done. It does seem to work better but I need more rounds through it to claim success for sure. That will happen in an hour or so. Unfortunately my Hydro-Shock supply isn't unlimited. Bonus - The other mags seem to fit better and the OEMs still work fine. I was surprised that the mags fit better as I really didn't remove much material but now I know where they were binding up. Well, the blued Act-Mag was showing a tad of wear there. It's still tight but pulls out without having to purposely pull. Now it's more like the older non-drop free Glock mags.

Maybe I'll get one of those Caswell brush on chrome kits to experiment. If I can get proficient enough I'll brush chrome that area. Should be fun to play with anyhow.
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Old 03-25-2020, 02:13 PM
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Oink, On the binding of your ACT mags, I would not overlook the grip screws being tightened just a hair too far and they will intrude into the magwell and drag on the mags. I have to adjust the tension on mine each time I remove the grips for cleaning. Some mags are just a touch wider than others and can cause dragging on the ends of the screws. I've got both 7rd Officer's Wilson's and the 7rd Officer's ACTs. My S.A. 3 1/2in Champion will only run with the 7rd Officers ACTs and my Sig C3 prefers the 7rd Officer ACTs. Both of my S.A. Micros will only run with the Wilson 7rd Officers mags. One of the flukes that we have to deal with when you love the old 1911 platform.
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Old 03-25-2020, 02:35 PM
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In before the "mags MUST drop free" club arrives.
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