9X23Guy Posted November 20, 2011 Share Posted November 20, 2011 (edited) So I've been shooting my first open gun for a full year now. STI chambered for 38SC, Schuemann barrel. The gun came with Starline 9x23 Supercomp brass. It functions flawlessly. Changing the optic/mount for next year and now that's its the off season getting ready to stock up on new brass. I like the idea or 9x23SC because of the thicker base where a 38SC will usually swell. Length of case is the same, rim is the same. I know the 9x23 is slightly tapered. What is the advantage of running 38SC instead of 9x23SC and what am I missing. Starline 9x23SC case, 124 MG JHP, 8.0 IMR 4756, 1.245 OAL, 166.5 PF. Couldn't find what I was looking for with the search. Thanks. Edited November 20, 2011 by 9X23Guy Link to comment Share on other sites More sharing options...
yoshidaex Posted November 20, 2011 Share Posted November 20, 2011 Cost and availability? Not very familiar with 9x23 but if it runs in your gun alongside 38sc, use it till it's no good or you lose it. Link to comment Share on other sites More sharing options...
Joe139 Posted November 20, 2011 Share Posted November 20, 2011 (edited) I don't know if I'm right but it was my understanding that most 38 SC guns are built with a .355 (9mm) barrel instead of a .356 (38) barrel and that acually makes most 38SC guns 9x23 am I right. Edited November 20, 2011 by Joe139 Link to comment Share on other sites More sharing options...
yoshidaex Posted November 20, 2011 Share Posted November 20, 2011 Schuemann sells .355 short chambered barrels so I don't think the .356 for 38 s/sc and .355 for 9mm is valid. They do sell a 38 s/sc specific AET barrel but I think that has more to do with his proprietary voodoo to gain a bit more accuracy. Link to comment Share on other sites More sharing options...
Joe139 Posted November 20, 2011 Share Posted November 20, 2011 So the 38 SC barrel they sell is it .355 or .356 I was told to use 9mm bullets in it 124 gr MG JHP is this correct Link to comment Share on other sites More sharing options...
wide45 Posted November 20, 2011 Share Posted November 20, 2011 I don't know if I'm right but it was my understanding that most 38 SC guns are built with a .355 (9mm) barrel instead of a .356 (38) barrel and that acually makes most 38SC guns 9x23 am I right. No. 9x23 is a tapered case. It's a longer 9mm. .38 super variants are essentially straight walled. Loading 9x23 with super dies will mostly smash the case into the shape of a super. The base and rim will still be larger than supercomp. A super chamber should not accept a properly sized 9mm case as the base is larger than a super. Some smiths oversize the chamber so the gun will still run on crappy ammo. The oversize chamber is bad for case life. Link to comment Share on other sites More sharing options...
Jaxshooter Posted November 20, 2011 Share Posted November 20, 2011 If you read Wil Schuemann's website you will see he recommends shooting bullets larger than the bore diameter, ie .356-.357 in a .355 bore. Link to comment Share on other sites More sharing options...
yoshidaex Posted November 20, 2011 Share Posted November 20, 2011 Good to know. Link to comment Share on other sites More sharing options...
eerw Posted November 20, 2011 Share Posted November 20, 2011 WIN 9x23 and starline 9x23 is a taper case. 38SC is a straightwall case. both run well. mostly depends if you are starting with a 9mm chamber or a 38super chamber. Link to comment Share on other sites More sharing options...
herky Posted November 20, 2011 Share Posted November 20, 2011 Both ran well in my 9x23 chambered gun. I loaded the 38supercomp in the 9mm setup with good luck and it ran as well as the 9supercomp. Link to comment Share on other sites More sharing options...
RH45 Posted November 23, 2011 Share Posted November 23, 2011 If I want to lock up my .38 Supercomp, all I have to do is mix in one of my friend's 9X23s! He can run my .38 Supercomps in his 9X23 though. I run .356 in everything, including Glocks, Sigs, and M&Ps. Link to comment Share on other sites More sharing options...
user293 Posted November 23, 2011 Share Posted November 23, 2011 the OP is worried about 38 SC uaually swelling? i dunno but ive ran some pretty high pressures and not had the SC swell. besides, when you run out of brass, and you will if your serious in the open division, win 9x23 or 9mm SC (starline 9x23) will cost you an arm and a leg, where 38 SC aint so bad. maybe someone else has different idea then me.?? welcome to open! Link to comment Share on other sites More sharing options...
XRe Posted November 23, 2011 Share Posted November 23, 2011 the OP is worried about 38 SC uaually swelling? i dunno but ive ran some pretty high pressures and not had the SC swell. I'd have to agree - the only time I've seen .38 SC swell is in chambers that were originally 9x19 that someone had "reworked" to .38 Super (ends up with the back end of the chamber being oversized, but it works). They seemed to resize down just fine, though (using a Dillon size die). besides, when you run out of brass, and you will if your serious in the open division, win 9x23 or 9mm SC (starline 9x23) will cost you an arm and a leg, where 38 SC aint so bad. maybe someone else has different idea then me.?? welcome to open! Well, .38 Supercomp is admittedly not cheap. 9x23 Comp (which is what 9 Super Comp is called, now) is even less so, but it's only $20 more per thousand than .38 Supercomp... At this point, 9x23 seems to be relatively dead. It offers no real performance advantage to anything out there. I could see it as an alternative if you had a 9x19 gun and wanted to convert it to a caliber that would allow you a wider variety of loads, etc, but it's a rather expensive route to go for that in terms of brass cost. Link to comment Share on other sites More sharing options...
warpspeed Posted November 23, 2011 Share Posted November 23, 2011 The only real advantage to running 9x23 is if you also reload 9x19 for a different gun such as production or perhaps for shooting Steel Challenge. They, 9x19 & 9x23, use the same dies so it would just be a change in the seating die and you are off to the races. Also, the same Casepro dies to roll size brass work. Link to comment Share on other sites More sharing options...
shred Posted November 23, 2011 Share Posted November 23, 2011 In some geographies (Israel for one), reloading is verboten, so the people that want to shoot Major Open do so with 9x23 factory rounds (at 180+ PF!) Except for that sort of wackiness, Supercomp seems to have pretty much won that war. Link to comment Share on other sites More sharing options...
RoryW Posted November 24, 2011 Share Posted November 24, 2011 (edited) All the Open shooters in Jamaica shoot win9x23 in their guns. When they come here to the States they shoot 38supercomp without changing anything. The guns run flawless with either and i shoot both thru my SV IMM. Edited November 24, 2011 by RoryW Link to comment Share on other sites More sharing options...
Alaskapopo Posted November 24, 2011 Share Posted November 24, 2011 the OP is worried about 38 SC uaually swelling? i dunno but ive ran some pretty high pressures and not had the SC swell. I'd have to agree - the only time I've seen .38 SC swell is in chambers that were originally 9x19 that someone had "reworked" to .38 Super (ends up with the back end of the chamber being oversized, but it works). They seemed to resize down just fine, though (using a Dillon size die). besides, when you run out of brass, and you will if your serious in the open division, win 9x23 or 9mm SC (starline 9x23) will cost you an arm and a leg, where 38 SC aint so bad. maybe someone else has different idea then me.?? welcome to open! Well, .38 Supercomp is admittedly not cheap. 9x23 Comp (which is what 9 Super Comp is called, now) is even less so, but it's only $20 more per thousand than .38 Supercomp... At this point, 9x23 seems to be relatively dead. It offers no real performance advantage to anything out there. I could see it as an alternative if you had a 9x19 gun and wanted to convert it to a caliber that would allow you a wider variety of loads, etc, but it's a rather expensive route to go for that in terms of brass cost. The reason 9x23guy shoots that round is he got a screaming deal on a nice open gun. Wish I had the money at the time I would have bought it. Pat Link to comment Share on other sites More sharing options...
9X23Guy Posted November 24, 2011 Author Share Posted November 24, 2011 User293, I can't concentrate on anything you say because all I keep doing is looking at that blonde. Link to comment Share on other sites More sharing options...
user293 Posted November 24, 2011 Share Posted November 24, 2011 User293, I can't concentrate on anything you say because all I keep doing is looking at that blonde. people seem to have that problem wherever i post. Link to comment Share on other sites More sharing options...
Kevin Pledger Posted November 26, 2011 Share Posted November 26, 2011 In some countries where you cant reload and have to rely on Factory Ammo, 9x23 makes Major out of the box, where as any 38.super wont. Cheers.... Link to comment Share on other sites More sharing options...
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