coltgov Posted September 18, 2007 Share Posted September 18, 2007 Can anyone post a picture so I can see just how much chamber support there is. I want to work up a major 9 load out of a g17 open gun. Already throated it to load zero jhp at 1.16 oal. Thanks for your help! Link to comment Share on other sites More sharing options...
TruStreet Posted September 18, 2007 Share Posted September 18, 2007 I think that a limiting facter here might be your Glock mags. I have trouble with anything loaded longer than 1.150. (FF) YRMV Manny Link to comment Share on other sites More sharing options...
coltgov Posted September 19, 2007 Author Share Posted September 19, 2007 I'll just keep upping the load starting with 7.5 grs of HS6 behind a Zero 125jhp. Looking for pressure signs as I go. Major should be just over 8 grs somewhere. It's a LW threaded barrel which has a little more chamber support all around than a KKM drop in. Thanks Trustreet! I know you already been there done that! I'll test out full mags at 1.16 in a match to see if it is reliable. If not will drop the OAL. Test N Tune, Test N Tune. Link to comment Share on other sites More sharing options...
HoMiE Posted September 19, 2007 Share Posted September 19, 2007 I'll just keep upping the load starting with 7.5 grs of HS6 behind a Zero 125jhp. Looking for pressure signs as I go. Major should be just over 8 grs somewhere. It's a LW threaded barrel which has a little more chamber support all around than a KKM drop in.Thanks Trustreet! I know you already been there done that! I'll test out full mags at 1.16 in a match to see if it is reliable. If not will drop the OAL. Test N Tune, Test N Tune. I would start out lower using HS-6. I think you will hit major(168+) right at 7.5, better to start low and work it up. Link to comment Share on other sites More sharing options...
ninemmbill Posted September 19, 2007 Share Posted September 19, 2007 I don't know if it helps but, I have a KKM barrel in my G35. I was looking for more support as well, trying to avoid being a victim of the KB people were reporting with the 40 cal. It definitely had more support than the stock barrel. Just the slightest bit of the case was exposed at the bottom of the barrel, I guess to maintain reliable feeding. Link to comment Share on other sites More sharing options...
coltgov Posted September 19, 2007 Author Share Posted September 19, 2007 I'll just keep upping the load starting with 7.5 grs of HS6 behind a Zero 125jhp. Looking for pressure signs as I go. Major should be just over 8 grs somewhere. It's a LW threaded barrel which has a little more chamber support all around than a KKM drop in.Thanks Trustreet! I know you already been there done that! I'll test out full mags at 1.16 in a match to see if it is reliable. If not will drop the OAL. Test N Tune, Test N Tune. I would start out lower using HS-6. I think you will hit major(168+) right at 7.5, better to start low and work it up. Thanks and duly noted! I reamed the throat so have a lot more freebore. That will help reduce the pressure spike when hitting the rifling. Link to comment Share on other sites More sharing options...
coltgov Posted September 19, 2007 Author Share Posted September 19, 2007 I don't know if it helps but, I have a KKM barrel in my G35. I was looking for more support as well, trying to avoid being a victim of the KB people were reporting with the 40 cal. It definitely had more support than the stock barrel. Just the slightest bit of the case was exposed at the bottom of the barrel, I guess to maintain reliable feeding. The part right above the feed ramp is always exposed. But if you can minimize the exposure around the other parts by not throating the barrel around the feed ramp much, then you have a much more supportive chamber. KKM throats much less than stock so I think you have nothing to worry about. Just don't double charge, or shoot reloads with bullet set backs. Link to comment Share on other sites More sharing options...
coltgov Posted September 19, 2007 Author Share Posted September 19, 2007 HoMiE Is it possibe to take a picture of your KKM gunsmith barrel. I want to see how much support is necessary to shoot major. Thanks in advance! Link to comment Share on other sites More sharing options...
coltgov Posted September 20, 2007 Author Share Posted September 20, 2007 Here is my barrel support. What do you think! Shoot major? Link to comment Share on other sites More sharing options...
ninemmbill Posted September 20, 2007 Share Posted September 20, 2007 I can get some pics up tommorrow. Link to comment Share on other sites More sharing options...
MARKUSEJ Posted September 20, 2007 Share Posted September 20, 2007 I would be interested in seeing apicture too! Link to comment Share on other sites More sharing options...
HoMiE Posted September 20, 2007 Share Posted September 20, 2007 Pic is not the greatest, but here is what mine looks like. Link to comment Share on other sites More sharing options...
coltgov Posted September 20, 2007 Author Share Posted September 20, 2007 Pic is not the greatest, but here is what mine looks like. Thanks HoMiE for your KKM gunsmith fit barrel pic! Very close to mine which is fantastic. I'm not so apprehensive now working my loads up to major. What weight spring do you use! Is it ISMI flat wound, or round like a 1911 spring. How far does your brass eject? Link to comment Share on other sites More sharing options...
racerba Posted September 20, 2007 Share Posted September 20, 2007 You guys need primers in those rounds to even remotely come close to a major power factor. Link to comment Share on other sites More sharing options...
ninemmbill Posted September 20, 2007 Share Posted September 20, 2007 (edited) I tried to get a side by side photo of the factory barrel and the KKM barrel. Not sure that it show up well, but there is more support with the KKM. Sorry, the pic turned out small. I will try to post the link. Edited September 20, 2007 by ninemmbill Link to comment Share on other sites More sharing options...
coltgov Posted September 21, 2007 Author Share Posted September 21, 2007 I tried to get a side by side photo of the factory barrel and the KKM barrel. Not sure that it show up well, but there is more support with the KKM. Sorry, the pic turned out small. I will try to post the link. I can tell the KKM is on the left. Link to comment Share on other sites More sharing options...
HoMiE Posted September 21, 2007 Share Posted September 21, 2007 What weight spring do you use! Is it ISMI flat wound, or round like a 1911 spring.How far does your brass eject? 14# Wolff, round like 1911 spring. Brass ejects about 7-8 feet. Link to comment Share on other sites More sharing options...
coltgov Posted September 21, 2007 Author Share Posted September 21, 2007 What weight spring do you use! Is it ISMI flat wound, or round like a 1911 spring.How far does your brass eject? 14# Wolff, round like 1911 spring. Brass ejects about 7-8 feet. Thanks HoMiE! That is good slide velocity. You use a shok buff? What is the reasoning behind using 14# wolf vs 13# or 15# ISMI. What spring do you use for minor? Link to comment Share on other sites More sharing options...
HoMiE Posted September 22, 2007 Share Posted September 22, 2007 Thanks HoMiE!That is good slide velocity. You use a shok buff? What is the reasoning behind using 14# wolf vs 13# or 15# ISMI. What spring do you use for minor? No shok buff. I was told Wolff springs give a little bit more clearance in the guide rod channel, lets the barrel drop a little bit more. I use 13# ISMI in my G34 production gun. I haven't tired ISMI in my open SJC glock. I was going to try 10# wolff and 11# and a worn out 13# ISMI for my minor load and see how well it runs. Link to comment Share on other sites More sharing options...
coltgov Posted September 22, 2007 Author Share Posted September 22, 2007 Thanks HoMiE!That is good slide velocity. You use a shok buff? What is the reasoning behind using 14# wolf vs 13# or 15# ISMI. What spring do you use for minor? No shok buff. I was told Wolff springs give a little bit more clearance in the guide rod channel, lets the barrel drop a little bit more. I use 13# ISMI in my G34 production gun. I haven't tired ISMI in my open SJC glock. I was going to try 10# wolff and 11# and a worn out 13# ISMI for my minor load and see how well it runs. Thanks HoMiE! Just got 3 from Midway, and the Lightening Strike guide rod. Worn out 13# ISMI works great for me. I'm using HS6, but I want to try WSF in the future. You helped me a great deal, and I should be alright now. Just have to work up my load and see how my dot tracks! Will be great to shoot flat out major, than having to slow down with minor to avoid dropping extra points. Now I only have to do that in production. Link to comment Share on other sites More sharing options...
HoMiE Posted September 23, 2007 Share Posted September 23, 2007 Thanks HoMiE!Just got 3 from Midway, and the Lightening Strike guide rod. Worn out 13# ISMI works great for me. I'm using HS6, but I want to try WSF in the future. You helped me a great deal, and I should be alright now. Just have to work up my load and see how my dot tracks! Will be great to shoot flat out major, than having to slow down with minor to avoid dropping extra points. Now I only have to do that in production. Check out my major 9 load development using WSF post. Click here! Link to comment Share on other sites More sharing options...
spankymac Posted September 23, 2007 Share Posted September 23, 2007 Thanks HoMiE!Just got 3 from Midway, and the Lightening Strike guide rod. Worn out 13# ISMI works great for me. I'm using HS6, but I want to try WSF in the future. You helped me a great deal, and I should be alright now. Just have to work up my load and see how my dot tracks! Will be great to shoot flat out major, than having to slow down with minor to avoid dropping extra points. Now I only have to do that in production. Check out my major 9 load development using WSF post. Click here! Homie, What length are you loading? I've used an 11lbs ISMI with good results with 135pf to 168pf Currently using wolf "glock" 12lbs with 2 coils removed.....works great Spankymac Link to comment Share on other sites More sharing options...
the duck of death Posted September 23, 2007 Share Posted September 23, 2007 I recently got into 9 Maj. with a G34 using a KKM barrel and comp. After reading posts on the danger/difficulty involved with this endeavor load development started with much trepidation. Then reality struck, 9 Maj is ridiculously easy in a Glock. I use 8.2gr of HS 6 and 7.1gr of Silhouette w/MG 121 IFP, WSP, OAL 1.145, any case. Case life is excellent, primers are rounded and it's not hard on the gun. Note--HS 6 is VERY clean in a Glock. Enjoy your open shooting experience. Link to comment Share on other sites More sharing options...
HoMiE Posted September 23, 2007 Share Posted September 23, 2007 Homie,What length are you loading? I've used an 11lbs ISMI with good results with 135pf to 168pf Currently using wolf "glock" 12lbs with 2 coils removed.....works great Spankymac Spanky - My OAL is 1.145" using MG 124 JHPs. Duck - I plan on giving Silhoutte a try this coming week. ALso, how do you like the MG 121s? I was thinking about trying them since you get a few more bullets for the same price as the 124s. Link to comment Share on other sites More sharing options...
the duck of death Posted September 24, 2007 Share Posted September 24, 2007 The IFP is a 115 JHP w/the HP filled w/lead thus it weighs 121gr. It's made for the Canadian market and is an excellent bullet. Link to comment Share on other sites More sharing options...
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