mtho Posted December 10, 2005 Share Posted December 10, 2005 I have a .40s&w slide I'm planning to have it built to be a 38super open gun. i'm looking for an opinion for this matter. any comments would be appreciated. Link to comment Share on other sites More sharing options...
shred Posted December 10, 2005 Share Posted December 10, 2005 I looked into it for a while.. It can work for Super, but probably isn't a good idea for Supercomp, 9-major or the other rimless variants. Eventually I just bought another slide anyway. Link to comment Share on other sites More sharing options...
Precision40 Posted December 10, 2005 Share Posted December 10, 2005 I'm currently shooting a dual caliber gun built by Benny Hill. He built the gun with BOTH 38 Super AND 40 S & W bbls. The same Caspian slide is used for both calibers. The 38 S is a bushing bbl for IDPA and the 40 is a bull bbl for IPSC limited. It takes about one minute to swap calibers and the gun shoots just GREAT. After some 7K rounds, there have been little or no problems. It's a real joy to shoot even with my limited "C" abilities. btw the gun is built with an STI frame w/ Caspian slide. Kudos to BH. Hope this helps... Link to comment Share on other sites More sharing options...
uscbigdawg Posted December 10, 2005 Share Posted December 10, 2005 I'd just sell the .40 slide and get a 9mm/.38 Super slide and go from there. SPC Richard A. White, Senior Medic 249th MP Detachment (EACF) Camp Humphreys, ROK Link to comment Share on other sites More sharing options...
Larry White Posted December 10, 2005 Share Posted December 10, 2005 (edited) The .40 slide will work for super because of the rim. It will not work for any of the rimless 9s. But I would sell or trade the slide, with a 9mm/ 38s slide and a super chamber it is possible to fire 38s. 9sc and 9x23 in the same gun if your gs knows how to set up extractors.-----Larry Edited December 10, 2005 by lkytx Link to comment Share on other sites More sharing options...
hdgun Posted December 14, 2005 Share Posted December 14, 2005 I would not sell the slide, I have Two guns I use with a 40 slide. One has a 38 super barrel and the other is 9mm. They work flowless. the differance between the 40 and 9/38 is only 15k. All you have to do is tighten up on the extractor a little more than usual. I have read some where on the threads that Benny Hill has done this as well. Link to comment Share on other sites More sharing options...
ASTIG Posted December 14, 2005 Share Posted December 14, 2005 any ideas on going the reverse? from 38s to 40sw? can the 38s slide be reused for a 40sw slide? Link to comment Share on other sites More sharing options...
mtho Posted December 14, 2005 Author Share Posted December 14, 2005 any ideas on going the reverse? from 38s to 40sw? can the 38s slide be reused for a 40sw slide? you can have a gunsmith open up the breachface a little bit to accept the .40 Link to comment Share on other sites More sharing options...
mtho Posted December 14, 2005 Author Share Posted December 14, 2005 I'm currently shooting a dual caliber gun built by Benny Hill. He built the gun with BOTH 38 Super AND 40 S & W bbls. The same Caspian slide is used for both calibers. The 38 S is a bushing bbl for IDPA and the 40 is a bull bbl for IPSC limited. It takes about one minute to swap calibers and the gun shoots just GREAT. After some 7K rounds, there have been little or no problems. It's a real joy to shoot even with my limited "C" abilities. btw the gun is built with an STI frame w/ Caspian slide. Kudos to BH. Hope this helps... precision40, what load of ammo do you feed your 38super? i'm building mine for open division and would feed it major load ammo. do you think i'll have a problem with the major loads? I would not sell the slide, I have Two guns I use with a 40 slide. One has a 38 super barrel and the other is 9mm. They work flowless. the differance between the 40 and 9/38 is only 15k.All you have to do is tighten up on the extractor a little more than usual. I have read some where on the threads that Benny Hill has done this as well. hdgun, do you feed your 38 super major loads? Link to comment Share on other sites More sharing options...
10mmdave Posted December 14, 2005 Share Posted December 14, 2005 hdgun, do you feed your 38 super major loads? BOY DOES HE EVER Just stand near him on the indoor range Link to comment Share on other sites More sharing options...
Radical Precision Designs Posted December 14, 2005 Share Posted December 14, 2005 Funny thing. One of my little "quirks" is that every slide I get goes through my measuring ritual with various micrometers. Even with the same manufacturer there are dimensional inconsistencies. However slight, they get "noted". Sometimes I have gotten a slide that was delivered as a .40/10, and another delivered as a .38/9, and after going through my measuring stage were too close to tell apart???? Don't ask, for I won't tell who done it!!!! It has been more than one, for sure. (Top brand names too!!) The "moral" of this is that "manufacturers tolerances" are very subjective... While I do not endorse (for liability reasons) the utilization of a slide "marked" for a specific caliber to be used in another, most of the slides are actually "not marked", and it is indeed a "judgement call" for the builder. The tightest tolerances in certain areas are not conducive for a "flawless" operating firearm. Your 'smith usually knows where to keep/make tight and where to loosen up for smooth running. It all comes down to your level of know how/what and similar experience, rather than hearsay. But sometimes hearsay will get you started in the right direction. As in these forums. "Maku Mozo!" Link to comment Share on other sites More sharing options...
hdgun Posted December 14, 2005 Share Posted December 14, 2005 hdgun, do you feed your 38 super major loads? I have put a few matches through the gun with major loads. I use this gun for a steel gun mostly. 135-140 PF. gun runs great. Caspian 38 super Caspian wide body frame 5" 6 port hybrid only (no comp) Optima 2000 9.3 HS6 with 124fmj And like 10mm Dave said, It is LOUD Link to comment Share on other sites More sharing options...
mtho Posted December 16, 2005 Author Share Posted December 16, 2005 hdgun, so no problem with it making major? Link to comment Share on other sites More sharing options...
hdgun Posted December 16, 2005 Share Posted December 16, 2005 (edited) There should be no problem making major, but if I'm not mistaken you had asked if there would be a problem using a 40 slide for 38 super. The answer in MHO is no problem, I have been doing it for years without a single hickup. Edited December 17, 2005 by hdgun Link to comment Share on other sites More sharing options...
mtho Posted December 17, 2005 Author Share Posted December 17, 2005 thanks Link to comment Share on other sites More sharing options...
mtho Posted January 10, 2006 Author Share Posted January 10, 2006 any of you use an aftec extractor on this type of set up? what model of aftec did you use?the one for 38 super or the one for supercomp? Link to comment Share on other sites More sharing options...
XRe Posted January 10, 2006 Share Posted January 10, 2006 any of you use an aftec extractor on this type of set up? what model of aftec did you use?the one for 38 super or the one for supercomp? In everything 1911-ish! In the past, I had a gun w/ a rimless extractor (.38SC/9xXX) that would also run regular .38 Super brass with no problem. Basically, it just has higher extractor tension than it should in that case. Going the *other* way may also work, but might be more subject to the extractor slipping off the case head, due to abnormally low extractor tension. Definitely get the one that corresponds to your main brass - then, if you happen to load some with the other brass, and it works, so be it BTW - .38 Super and .38SC aren't going to be interchangeable in your shellplate on your press, anyway, so.... Of course, you could always buy *two* extractors, and swap them between brass changes, too.... Link to comment Share on other sites More sharing options...
mtho Posted January 10, 2006 Author Share Posted January 10, 2006 (edited) my main brass would be in 38super. but my slide is for .40s&w, so i was thinking of getting an aftec for rimless brass because I need more tension. am i correct with my assumptions? Edited January 10, 2006 by mtho Link to comment Share on other sites More sharing options...
tpe187 Posted January 12, 2006 Share Posted January 12, 2006 Hi, Yes, a .40 slide can be used for a 38 super gun. I recently got a Benny Hill limited gun in 40 S&W and 38 super. I have several SVI's with the interchangeable breechface and I thought this is what Benny was going to use. When it showed up with the solid breech I was a little skeptical. I wouldn't have believed it if I didn't shoot it myself, but as of today, I have run 300rds of 40 and 300rds of 38 super with not one malfuncion. I didn't think it was possible to have an extractor that would work with both, but go figure. It really is a perfect setup. I use the 40 for IPSC limited and for tactical matches and IDPA I have the bushing 38 super. I have run both light 38 super rounds through it at about 1150fps with a 115gr Zero HP and and 38 super at 1350 with a 130gr fmj. Worked well with both. I would say go for it and use the same slide for both, but make sure the smith knows what he is doing when it comes to tuning the extractor. Tom Link to comment Share on other sites More sharing options...
gorgon Posted January 19, 2006 Share Posted January 19, 2006 The .40 slide will work for super because of the rim. It will not work for any of the rimless 9s. But I would sell or trade the slide, with a 9mm/ 38s slide and a super chamber it is possible to fire 38s. 9sc and 9x23 in the same gun if your gs knows how to set up extractors.-----Larry This is not correct. A slide made for .40 can be used for .40, 9mm Para, 9x21, .38 Super etc. I have interchangeable breechface on my SVI but I don't change it when I put my 9mm Para barrel in the slide. The guy who owned the gun before me had a .38 Super barrel installed. So my .40 slide has been used with .40, 9mm para and .38 Super barrel with the same extractor with total reliability. \\gorgon Link to comment Share on other sites More sharing options...
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