3djedi Posted February 19, 2018 Share Posted February 19, 2018 What kind of round count could a typical open gun expect using 9mm major? Is there a life expectancy of open guns? Sent from my SM-G955U using Tapatalk Link to comment Share on other sites More sharing options...
Gooldylocks Posted February 19, 2018 Share Posted February 19, 2018 50k+ Link to comment Share on other sites More sharing options...
Blksheep Posted February 19, 2018 Share Posted February 19, 2018 Sounds about right. Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted February 19, 2018 Share Posted February 19, 2018 I just had slide crack at c 25,000 rounds, but STI going to replace slide You will have to replace some parts, but don't know why an OPEN gun won't last as long as a Limited gun .... Link to comment Share on other sites More sharing options...
Dave Campbell Posted February 19, 2018 Share Posted February 19, 2018 My first Open Gun was built in 95, I still use it. The only things that are from the original gun however are the STI frame, beaver tail and Magwell . Every thing else has replaced , most parts more than once. Slides go 50K to 90K , Link to comment Share on other sites More sharing options...
3djedi Posted February 19, 2018 Author Share Posted February 19, 2018 I just had slide crack at c 25,000 rounds, but STI going to replace slide [emoji4] You will have to replace some parts, but don't know why an OPEN gun won't last as long as a Limited gun .... [emoji144]My sti slide cracked at 300 rounds lol. CK Arms will replace it of course........ I guess sti had a batch of slides that the steel was to hard and brittle and prone to cracking. Sent from my SM-G955U using Tapatalk Link to comment Share on other sites More sharing options...
speedsport Posted February 21, 2018 Share Posted February 21, 2018 I just had my STI DVC open comp crack at 3,000 rounds. They are replacing the barrel and slide no charge but I lose the gun for 5 weeks. Link to comment Share on other sites More sharing options...
Flatland Shooter Posted February 21, 2018 Share Posted February 21, 2018 My first open gun in 9 Major (9x21) had over 75k rounds through it when it was retired. Still has the original slide (Caspian) and barrel (Nowlin). Only thing replaced other than springs was the hammer, sear, and disconnector. Accuracy was beginning to suffer so I upgraded. Link to comment Share on other sites More sharing options...
2011BLDR Posted February 21, 2018 Share Posted February 21, 2018 (edited) .. Edited February 21, 2018 by 2011BLDR Link to comment Share on other sites More sharing options...
Gooldylocks Posted February 21, 2018 Share Posted February 21, 2018 11 hours ago, 2011BLDR said: I absolutely concur that no way will a 9 major last anywhere near those round counts... powders used are faster with higher pressers..the$ saved on brass is used on replacing parts .. then you have the down time for the repairs What evidence do you have? And there are plenty of slow powders that people can use to make major with 9mm. That is an old wives tale at this point. HS6, 3n38, AA7... I could go on. Link to comment Share on other sites More sharing options...
Maximis228 Posted February 21, 2018 Share Posted February 21, 2018 I sold a 9 major gun with 50K on it last year for $250 less than I paid to build it. Gun still shot 1.5 inch groups at 25 yards. Thing was a runner and still is. I will put 50K on each of the 3 open guns im shooting now and either keep beating on them or sell them to build a different style gun (Although I do love my current hybrid set up). I have no concerns with reaching 75K-100K on each barrel. I can make up loads with WAC (Current main powder), HS6, AA7, 3n38, and a few others as well. Not really an issue. Link to comment Share on other sites More sharing options...
3djedi Posted February 21, 2018 Author Share Posted February 21, 2018 What's your hybrid set up like?Here's an off topic question but can you run 135g bullets through an open gun or is best to stick with the 115's and 124's?Sent from my SM-G955U using Tapatalk Link to comment Share on other sites More sharing options...
caspian guy Posted February 21, 2018 Share Posted February 21, 2018 (edited) My favorite Caspian open gun had been a 38 super. I had rebarreled it to 9mm when the 38 super barrel finally shot out (for most of the time it was a 38 super major was 175.) the gun easily had 100k+ (probably 75k of it 9mm) rounds on it when the slide finally cracked. That's well with in the service life of what I would expect from a well built open gun with a slide that's not radically lightened. I haven't found 9mm more prone to wear or breakage than super (I have a super slide crack as well) Edited February 21, 2018 by caspian guy Link to comment Share on other sites More sharing options...
Gooldylocks Posted February 21, 2018 Share Posted February 21, 2018 14 minutes ago, 3djedi said: What's your hybrid set up like? Here's an off topic question but can you run 135g bullets through an open gun or is best to stick with the 115's and 124's? I too shoot a hybrid, and we both really like our guns. Mine is a 5", his are all 5.4s. It is a great way to lighten the slide while at the same time increasing the stationary mass of the gun, and keeping it more centered than if you were using a steel comp to accomplish the same goal. 135s would definitely not be my choice. You certainly could easily load them (or 147s, or 150s, etc) to major, but in my opinion you would be leaving performance on the table vs the lighter bullets. Link to comment Share on other sites More sharing options...
cody6477 Posted February 22, 2018 Share Posted February 22, 2018 9 hours ago, 3djedi said: Here's an off topic question but can you run 135g bullets through an open gun or is best to stick with the 115's and 124's? I'm using 125s but I loaded up some of the 135s I've been using for production and they ran fine. Did not really feel a difference from the 125s, but then again I was just curious and haven't tested it seriously. On another note, a friend of mine who is GM in open is running 147s these days. Link to comment Share on other sites More sharing options...
3djedi Posted February 22, 2018 Author Share Posted February 22, 2018 I'm using 125s but I loaded up some of the 135s I've been using for production and they ran fine. Did not really feel a difference from the 125s, but then again I was just curious and haven't tested it seriously. On another note, a friend of mine who is GM in open is running 147s these days.147's no kidding. Sent from my SM-G955U using Tapatalk Link to comment Share on other sites More sharing options...
cody6477 Posted February 22, 2018 Share Posted February 22, 2018 Just now, 3djedi said: 147's no kidding. Sent from my SM-G955U using Tapatalk Yeah, surprised me too. He gave me a few to try and they struck me as relatively soft. I noticed in another thread that Atlanta sells 9mm major 147s. Link to comment Share on other sites More sharing options...
3djedi Posted February 22, 2018 Author Share Posted February 22, 2018 Yeah, surprised me too. He gave me a few to try and they struck me as relatively soft. I noticed in another thread that Atlanta sells 9mm major 147s.Heck I might as well give my 135's a try. I have a bunch I use for carry optics lolSent from my SM-G955U using Tapatalk Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted February 22, 2018 Share Posted February 22, 2018 6 hours ago, cody6477 said: GM in open is running 147's . Is he using them for USPSA ? Using a comp ? Know what powder he's using ? Any idea WHY he's doing that ? Love to hear some more details about that, if you happen to know them. Link to comment Share on other sites More sharing options...
2011BLDR Posted February 22, 2018 Share Posted February 22, 2018 Several of the GM's around Rio salado (area 2) have been running 147gr 9 Major lately (18 months or so)... Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted February 22, 2018 Share Posted February 22, 2018 44 minutes ago, 2011BLDR said: Several GM's have been running 147gr 9 Major I've never tried it, myself, just took accepted wisdom that the comp won't work as well with less powder - Have to give it a try one day. Any idea what powder they're using ? Link to comment Share on other sites More sharing options...
2011BLDR Posted February 22, 2018 Share Posted February 22, 2018 4 minutes ago, Hi-Power Jack said: I've never tried it, myself, just took accepted wisdom that the comp won't work as well with less powder - Have to give it a try one day. Any idea what powder they're using ? Not 100% sure.... but the starting load from Vit for 3N38 on a 147 gr 9mm is 6.3gr @ 1171fps (172.137 PF).... ,45 6.9 368 1207 Link to comment Share on other sites More sharing options...
kneelingatlas Posted February 22, 2018 Share Posted February 22, 2018 9 minutes ago, Hi-Power Jack said: I've never tried it, myself, just took accepted wisdom that the comp won't work as well with less powder - Have to give it a try one day. Any idea what powder they're using ? I would imagine something slow like 3N38, N105 or AA9. I've loaded 9 major with 135s, they're nice and soft, although a little more flip. Link to comment Share on other sites More sharing options...
kneelingatlas Posted February 22, 2018 Share Posted February 22, 2018 I'd take a heavier bullet over a faster powder. Link to comment Share on other sites More sharing options...
Maximis228 Posted February 22, 2018 Share Posted February 22, 2018 23 hours ago, 3djedi said: What's your hybrid set up like? Link to comment Share on other sites More sharing options...
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