fp45liberator Posted August 9, 2014 Share Posted August 9, 2014 I have a gun I purchased second hand with an 11 port SJC comp. Can I use it to shoot minor, or will it not have enough power to cycle? Should I move to an 11# spring? Link to comment Share on other sites More sharing options...
jimreed1948 Posted August 9, 2014 Share Posted August 9, 2014 The gun should run fine with the comp. The comp will have no bearing on the function of the slide. For the comp to function as designed, a slow burning powder like Winchester Auto Comp (WAC) with a light bullet such as 115 to 125 gr will work fine. It seems a lot of people like the 124's because it gives them a little more room in the case after the powder is added. I run 13 # springs on my guns. I do know of several people using 11 # springs and they work fine. You can do an additional search under 9 mm Major and find numerous loads that would help you out. Link to comment Share on other sites More sharing options...
fp45liberator Posted August 9, 2014 Author Share Posted August 9, 2014 (edited) I'm having trouble. The rig is a Glock 17 Gen 3 with SJC 11 port comp, along with an SJC C-More mount. Even with 11# springs I'm still getting one out of 10 shells jammed between the slide and the SJC mount. At first I thought it was the recoil spring, but now I don't know what to do. It seems to run fine with hotter ammo and 15# springs, but with minor loads it chokes. What should I be looking at? I'm running 124 berrys over 4.0 Titegroup at 1.10. The load is accurate and comes in at around 137 PF. Do you think I should look at my extractor? Thanks for helping out an open Newbie. Edited August 9, 2014 by walstien Link to comment Share on other sites More sharing options...
Racinready300ex Posted August 10, 2014 Share Posted August 10, 2014 Is it a 90* mount? Is your ejection port lowered? I do think they say there 11 port is for major loads. Link to comment Share on other sites More sharing options...
fp45liberator Posted August 10, 2014 Author Share Posted August 10, 2014 No. Straight mount. Not sideways. Ejection port is lowered. Do you think I'd have success with another comp? In the first response on this thread the poster indicated that he didn't think the comp could be a problem. Link to comment Share on other sites More sharing options...
Racinready300ex Posted August 10, 2014 Share Posted August 10, 2014 I'm honestly not sure, never tried it so I'd just be guessing. I'd shoot them a email and see what they say. I'm sure they will know the answer. Link to comment Share on other sites More sharing options...
fp45liberator Posted August 10, 2014 Author Share Posted August 10, 2014 You mean sjc? Link to comment Share on other sites More sharing options...
BoyGlock Posted August 10, 2014 Share Posted August 10, 2014 Up your load to 150ish pf Link to comment Share on other sites More sharing options...
Mad Doc Posted August 10, 2014 Share Posted August 10, 2014 That compensator works with major loads the best otherwise you are going to have FTE and if you go below an 11lb recoil spring the slide is not going to lock consistently. I suggest change your compensator to shoot minor. Link to comment Share on other sites More sharing options...
fp45liberator Posted August 10, 2014 Author Share Posted August 10, 2014 I think I'll take it back to the range and try to run it without a comp. If it runs without the comp I'll know its the comp that needs to be changed. Also, I suppose I can try getting to around 150 pf, but at that point I suppose I should just try for Major. Link to comment Share on other sites More sharing options...
EkuJustice Posted August 11, 2014 Share Posted August 11, 2014 (edited) If it's for uspsa i would try for major. That compensator especially was made for major where their 5 port comp is for major and minor. 9mm major is weird in that it actually shoots flatter than 9mm minor if there is a decent comp on the gun and gets you major scoring as well If you wanna use minor I would make the round longer and add more powder to get the PF. 1.1 is very short for a glock. 1.145-1.155 is where it should be Edited August 11, 2014 by EkuJustice Link to comment Share on other sites More sharing options...
buss544 Posted August 14, 2014 Share Posted August 14, 2014 If your barrel is a Kkm then I would be willing to trade you my minor 3 port Carver comp for your SJC. Send me a pm if you're interested. Link to comment Share on other sites More sharing options...
fp45liberator Posted August 14, 2014 Author Share Posted August 14, 2014 The my SJC comp is on a Factory Glock barrel that was threaded. I don't know the thread pitch Buss. I ran to the range today and tried the gun without the comp and it ran like a top.... so I guess it was the comp. I only intend to run minor - does anyone have a recommendation for a good comp for minor? Link to comment Share on other sites More sharing options...
Kraj Posted August 20, 2014 Share Posted August 20, 2014 If you could send me some pictures of your comp I would be willing to trade a 5 port sjc comp for your 11. They recommend the 11port for major only and the 5 for major/minor. Pm me if your interested. Link to comment Share on other sites More sharing options...
buss544 Posted August 24, 2014 Share Posted August 24, 2014 The my SJC comp is on a Factory Glock barrel that was threaded. I don't know the thread pitch Buss. I ran to the range today and tried the gun without the comp and it ran like a top.... so I guess it was the comp. I only intend to run minor - does anyone have a recommendation for a good comp for minor? 9/16 32 TPI is the thread pitch of the SJC and Carver Comps. Link to comment Share on other sites More sharing options...
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