Descartian Posted December 16, 2017 Share Posted December 16, 2017 (edited) I'm looking at a STI 2011 longslide build with a 5 chamber 7 port comp. My smith has come back saying that there are feeding issues with the 40 Super and 2011 frames. Most likely magazine related. Ive seen quite a few older STI's in 40S that supposedly run fine. Any trick to get them running reliably? Edited December 16, 2017 by Descartian Link to comment Share on other sites More sharing options...
zzt Posted December 17, 2017 Share Posted December 17, 2017 If you mean 40 S&W, the answer is no. I run two 40sw Open guns and have zero magazine related problems. I own STI tubes with Grams guts, 1st gen Infinity tubes with Grams or TTI guts, and MBX mags. I have no problems with OALs from 1.126" to 1.80". The MBX 140 and 170 mags are what I use for matches, plus one Infinity big stick. I use Rainier plated TCs, X-Treme plated RNFPs and MG JHPs. I have no feeding issues with any of these bullet profiles. I'd recommend the MBX mags. STI mags have thinner, weaker feed lips and you have to tune them fairly often. Not so with MBX. They run fine right out of the box, although you should condition the springs first. No other tweaking is necessary. Link to comment Share on other sites More sharing options...
Joe4d Posted December 17, 2017 Share Posted December 17, 2017 40 super is all but dead, you'd be putting a bunch of money into a gun and kinda be stuck with an oddball. However no idea why it wouldnt function fine, havent heard any feed issues with 357 sig and its a very similar design. Link to comment Share on other sites More sharing options...
Descartian Posted December 17, 2017 Author Share Posted December 17, 2017 Yes I mean 40 Super. For those unaware it's a 45 winmag shortened and necked down to 40 cal. Similar in dimensions to a 45acp necked down to .40. It is an oddball cartridge but my intentions are not for a competition pistol but a hunting pistol, that's the reason for going with a 6" longslide and the larger comp. I'm not worried about ammo as this will not me a high round count pistol. It's more of a fun project, I just want it to run. Link to comment Share on other sites More sharing options...
RangerTrace Posted December 17, 2017 Share Posted December 17, 2017 If you want to hunt, just get an STI Hawk in 10mm and be done with it. Link to comment Share on other sites More sharing options...
Gooldylocks Posted December 17, 2017 Share Posted December 17, 2017 8 minutes ago, RangerTrace said: If you want to hunt, just get an STI Hawk in 10mm and be done with it. The hawk isn't made in a 10mm, the nitro is though (it appears to have been removed from their website though?). I think a 10mm would be an easier solution, but 40 super would be more gnarly. Is the extra 100-150fps worth the expense of having to build a custom gun in an oddball caliber? I'm not sure. Link to comment Share on other sites More sharing options...
RangerTrace Posted December 17, 2017 Share Posted December 17, 2017 I thought I read where it was a 10mm. I don't see any 10mms on their site right now. I do know a local guy who was trying to sell his Nitro in 10mm a while back...... Link to comment Share on other sites More sharing options...
Descartian Posted December 17, 2017 Author Share Posted December 17, 2017 (edited) I have a 2011 comped STI Perfect 10 and a 2011 Nitro 10. (Both 10mm). I like oddball guns/rounds (and projects) and I'm looking for something more powerful than 10mm in a doublestack. Edited December 17, 2017 by Descartian Link to comment Share on other sites More sharing options...
RangerTrace Posted December 17, 2017 Share Posted December 17, 2017 Well there you go....... Link to comment Share on other sites More sharing options...
Joe4d Posted December 17, 2017 Share Posted December 17, 2017 I think the issue is basically charting new ground. Probably not enough out there been built for anyone to say it would or wouldnt run. Would it use a 45ACP breach face and mags ? If it didnt run yo would only be out a barrel. Could swap it out for a 45 and make a bowling pin gun Link to comment Share on other sites More sharing options...
zzt Posted December 17, 2017 Share Posted December 17, 2017 Or swap it out for a 460 Roland kit. Link to comment Share on other sites More sharing options...
Descartian Posted December 17, 2017 Author Share Posted December 17, 2017 I've spoke to both Rowland and Clark. 460 doesn't function in 2011 platform. Only double stack option would be a glock which doesn't appeal to me. Link to comment Share on other sites More sharing options...
nikdanja Posted December 23, 2017 Share Posted December 23, 2017 On 12/15/2017 at 11:55 PM, Descartian said: I'm looking at a STI 2011 longslide build with a 5 chamber 7 port comp. My smith has come back saying that there are feeding issues with the 40 Super and 2011 frames. Most likely magazine related. Ive seen quite a few older STI's in 40S that supposedly run fine. Any trick to get them running reliably? Why Link to comment Share on other sites More sharing options...
Descartian Posted December 23, 2017 Author Share Posted December 23, 2017 Why the build? Why the round? Well the pistol is going to be a dedicated hunting gun. The reason for 40 Super is I want a ballistic advantage over 10mm in which I have an identical pistol built. Link to comment Share on other sites More sharing options...
tmz Posted December 28, 2017 Share Posted December 28, 2017 You just need to use the spacers like the 9mm ones in the magazine that will cure your feeding problem. Another good wildcat cartridge to consider is the 9 x 25 Link to comment Share on other sites More sharing options...
Descartian Posted January 4, 2018 Author Share Posted January 4, 2018 On 12/27/2017 at 7:22 PM, tmz said: You just need to use the spacers like the 9mm ones in the magazine that will cure your feeding problem. Another good wildcat cartridge to consider is the 9 x 25 Definitely not going to work. My factory loaded 40s&w ammo is 1.116, my factory 10mm is 1.250 and 40Super is 1.253. I wouldn't be able to load 40 super amo in a mag with the spacer. Link to comment Share on other sites More sharing options...
858 Posted January 4, 2018 Share Posted January 4, 2018 (edited) 40 Super brass is the same length as 10mm so your COAL should be the same as 10mm Auto. Having never built or shot a 40 Super 2011 (only Glock conversions) I would think the only challenge is feedlip geometry. However, the conversions I have seen (Glock) were just a drop in barrel that required no modifications to magazines. What feeding issues is your smith encountering? Is he postulating future issues or actually running into feeding problems? It is essentially a necked down 45 ACP (the parent case is a 45 Winmag for length). Edited January 4, 2018 by 858 Link to comment Share on other sites More sharing options...
Alaskapopo Posted January 4, 2018 Share Posted January 4, 2018 On 12/17/2017 at 5:40 AM, Joe4d said: 40 super is all but dead, you'd be putting a bunch of money into a gun and kinda be stuck with an oddball. However no idea why it wouldnt function fine, havent heard any feed issues with 357 sig and its a very similar design. Actually the 357 sig is a hard round to feed. I had over 8 pistols in this caliber and the sigs all did fine the full size Glocks did as well. (31 and 32) the 33 not so much. Guns converted from 40SW like a Browning Highpower no joy too. The bottle neck round tends to nose dive unless you have strong magazine springs. Link to comment Share on other sites More sharing options...
Joe4d Posted January 4, 2018 Share Posted January 4, 2018 you reload for it ? always wondered if it was a pain in rear or not. Link to comment Share on other sites More sharing options...
858 Posted January 4, 2018 Share Posted January 4, 2018 5 hours ago, Joe4d said: you reload for it ? always wondered if it was a pain in rear or not. It's no different than making 357 Sig brass. 40 Super is trimmed 45 WinMag brass that is then sized in a 45 Super sizing die. 357 Sig is 10mm Auto(SP) brass trimmed and sized in a 357 Sig sizing die. Link to comment Share on other sites More sharing options...
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