38supPat Posted December 14, 2011 Share Posted December 14, 2011 Since the thread about "which gun is flatter" has spun off in all kinds of directions, let's start a discussion about open gun set ups and tuning. Quote Link to comment Share on other sites More sharing options...
gng4life Posted December 14, 2011 Share Posted December 14, 2011 Aren't there too many variables to even discuss that? It would be nice but this thread could go on for decades. For example, recently, we were discussing running Minor ammo in Open guns and guys with the same models reported different results, guys with multiple guns with very similar setups has very different results, etc. I would like to read some interesting discussion on some secrets to what others have done to get their setups just right. I just hope it doesn't turn into any sort of bashing or snide comments to others about what they do or like. Thanks... Quote Link to comment Share on other sites More sharing options...
38supPat Posted December 14, 2011 Author Share Posted December 14, 2011 I'll keep an eye on the thread but hopefully we can all be mature enough to have a discussion with out resulting to bashing each other. There are a lot of variables but that shouldn't stop a discussion. Quote Link to comment Share on other sites More sharing options...
XRe Posted December 14, 2011 Share Posted December 14, 2011 It's a complex topic, due to all the interactions of all the different components. If I could find time away from the rest of my life, I have a couple of blog articles in the works on how it all breaks down, but I haven't been able to give them the finishing touches, yet... Eventually, I'll get 'em done - hopefully sooner than later Quote Link to comment Share on other sites More sharing options...
CocoBolo Posted December 14, 2011 Share Posted December 14, 2011 We should start out small and just settle on Cone or Bull as the better platform. stick to which one shoots better. I've got 3 Cone guns and one Bull, I like both in different ways, and yes they are ugly tripletts, near identical. Have I already voted with my $$'s. Quote Link to comment Share on other sites More sharing options...
CAB33 Posted December 14, 2011 Share Posted December 14, 2011 We should start out small and just settle on Cone or Bull as the better platform. Don't forget the Trubor system Quote Link to comment Share on other sites More sharing options...
donnyglock Posted December 14, 2011 Share Posted December 14, 2011 Heres my set up. STI frame Caspian slide lightened to 10oz STI trubor barrel with Brazos cuts dawson magwell aftec extractor egw ejector Brazos tuned trig kit tuned to 1 3/4lbs Cheely mount Ed Brown ambi safety STI grip safety STI slide release M2i fireing pin. The load Im useing 7.6g of sil with a 124g montana gold cmj loaded to 1.165. I have not shot alot of other open guns but I love the way this gun feels. Quote Link to comment Share on other sites More sharing options...
CocoBolo Posted December 14, 2011 Share Posted December 14, 2011 Heres my set up. STI frame Caspian slide lightened to 10oz STI trubor barrel with Brazos cuts dawson magwell aftec extractor egw ejector Brazos tuned trig kit tuned to 1 3/4lbs Cheely mount Ed Brown ambi safety STI grip safety STI slide release M2i fireing pin. The load Im useing 7.6g of sil with a 124g montana gold cmj loaded to 1.165. I have not shot alot of other open guns but I love the way this gun feels. That is pretty much an Ugly Twin to CoCo. http://www.sashooter.com/gallery/main.php?g2_itemId=794&g2_imageViewsIndex=1 or Bull Coco not pictured. Looks like you stole my load as well. The Coco uses the Dawson comp and a bushing or Bull barrel and just about everything else is equal. Quote Link to comment Share on other sites More sharing options...
gng4life Posted December 14, 2011 Share Posted December 14, 2011 Wow Donnyglock, that's a nice looking pistol there! I'll post mine info later also but just had to make that comment! What grip is that? I like how high the undercuts are. Nice work on the slide also! Quote Link to comment Share on other sites More sharing options...
jawel Posted December 14, 2011 Share Posted December 14, 2011 what recoil spring load are you using? Quote Link to comment Share on other sites More sharing options...
38supPat Posted December 14, 2011 Author Share Posted December 14, 2011 Millenium built STI frame Red Buff scope mount Caspian slide, flat top, lightening cut in top, 1/4" off front, rear swoop Nowlin skinny barrel, EGW cone, SVI comp (back cut chambers) Can't remember firing pin make...lol Aftec extractor Extreme Engineering hammer, disconnector. EGW sear 19# mainspring 10# conventional Wolff recoil spring EGW Magwell stock mainspring housing Old Config SVI IMM frame Doubletap Sports Scope mount Caspian slide 5", tri topped, swoop and dovetail for racker cut for hybrid Schuemann hybrid ribbed barrel, 1/32" twist, two holes. Millenium steel comp EGW racker Aftec Extreme Engineering hammer, sear, disconnector 19# mainspring 10# variable Wolff recoil spring EGW magwell Quote Link to comment Share on other sites More sharing options...
donnyglock Posted December 14, 2011 Share Posted December 14, 2011 The grip I made. I did the under cut,stippled and painted. STI guide rod and 9lb spring. Coco I did steal your load data. I just started shooting open in June and was looking for load data. Came across an old thread and gave your pet load a try. Love it. I would thank you but you called my gun ugly.... Quote Link to comment Share on other sites More sharing options...
Whoops! Posted December 14, 2011 Share Posted December 14, 2011 My money is on the bet that variables in barrel timing are what cause the wide variables in recoil spring weights for similar platforms. STI doesn't exactly release perfect timing on all of their firearms, and that seems to be the most often cited company when one says "I can't run minor loads in my stock STI with a light, or a stock, or a heavy recoil spring." and another says, "I can run minor loads in my stock STI with a stock recoil spring." What most people think is just luck with regards to each gun's setup, can actually be fixed with detail to very specific items. After all, the same metals are often used and it's not like coefficients of friction change and overall friction should not change either with similar amounts of fitting. Also, most of the top shooters I've seen in action have a lot of compensation on their guns. I will say more is better from both my experience and theirs. If for some reason a very slow powder does not have the right timing for you when a ton of compensation is used. . . you can always go to a slightly faster powder, but you can't easily add more compensation. On a side note, quite frankly, if someone has figured something out that they think is an obvious advantage with regards to setup, they're not likely to share it with those they are competing against. As others have said, there are a lot of variables and, well, that's enough for now I guess. Quote Link to comment Share on other sites More sharing options...
38supPat Posted December 14, 2011 Author Share Posted December 14, 2011 On a side note, quite frankly, if someone has figured something out that they think is an obvious advantage with regards to setup, they're not likely to share it with those they are competing against. You know this is a forum that is geared towards doing exactly that, right? Quote Link to comment Share on other sites More sharing options...
lcs Posted December 14, 2011 Share Posted December 14, 2011 I think you will also need to further break down the thread to 9 Major or 38S/SC. The basics would be the same (cone or bull barrel), but you really go different directions when you start talking comps, popple holes, IMM type barrels, and loads, which really affect how flat a gun shoots. Quote Link to comment Share on other sites More sharing options...
Whoops! Posted December 14, 2011 Share Posted December 14, 2011 On a side note, quite frankly, if someone has figured something out that they think is an obvious advantage with regards to setup, they're not likely to share it with those they are competing against. You know this is a forum that is geared towards doing exactly that, right? And that's why I share what I know. However, many reading this forum may likely not. They could simply read it to gain more of their own advantages. Quote Link to comment Share on other sites More sharing options...
Jon Merricks Posted December 14, 2011 Share Posted December 14, 2011 On a side note, quite frankly, if someone has figured something out that they think is an obvious advantage with regards to setup, they're not likely to share it with those they are competing against. You know this is a forum that is geared towards doing exactly that, right? And that's why I share what I know. Please share what has worked for you and your open guns? Quote Link to comment Share on other sites More sharing options...
Bigpops Posted December 14, 2011 Share Posted December 14, 2011 Pat - any idea what your slide weighs? Steve Quote Link to comment Share on other sites More sharing options...
38supPat Posted December 14, 2011 Author Share Posted December 14, 2011 No...lol When I get the new one back I'll weigh both Quote Link to comment Share on other sites More sharing options...
Bigpops Posted December 14, 2011 Share Posted December 14, 2011 (edited) Thanks for the info! My new gun arrives in a few days. I plan on playing with a few spring setups but figure the 10 lb to be pretty close for starters with a 10-12oz slide. Going with NO shock buff. Edited December 14, 2011 by Bigpops Quote Link to comment Share on other sites More sharing options...
supreme135 Posted December 14, 2011 Share Posted December 14, 2011 My vote is on the Schuemann ported barrels with a Brazo comp. I am using 8.5grs of sil with a 121 Montana. 9lb spring Not much tuning here. Quote Link to comment Share on other sites More sharing options...
TMC Posted December 14, 2011 Share Posted December 14, 2011 There so many variables in open guns it can make your head spin. Take a look at this video. The first segment as has 6 different open guns and from what I can see they all seem to have about the same amount of movement at the comp. How they look from the other side could be huge and what ultimately counts. The guns range from my home built (STI frame, slide, Schueman 3 port hybrid and EGW 3 port comp), to an M2, SV IMM factory gun, another M2, a Limcat and a Bedell in that order http://www.youtube.com/watch?v=Yu0rcFKPKKM Quote Link to comment Share on other sites More sharing options...
donnyglock Posted December 14, 2011 Share Posted December 14, 2011 Cool vid. Quote Link to comment Share on other sites More sharing options...
OperationHitFactor Posted December 14, 2011 Share Posted December 14, 2011 I got a question for you guys. I just bought an open gun with a DP cone comp. There are no poppel holes in the barrel or side vents in the comp. Any advice on if or if not I should get poppel holes in the barrel and/or side vents in the comp? I'm going to shoot the gun for a bit, but is there anything I should look for in the dot tracking to indicate if I should consider it? Thanks Quote Link to comment Share on other sites More sharing options...
donnyglock Posted December 14, 2011 Share Posted December 14, 2011 What caliber are you shooting. 9mm I would say no. Quote Link to comment Share on other sites More sharing options...
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