Fo0 Posted May 6, 2019 Share Posted May 6, 2019 How would you describe a STI Trubor barrel vs KKM - quality accuracy etc Link to comment Share on other sites More sharing options...
MikeBurgess Posted May 6, 2019 Share Posted May 6, 2019 the comp never comes loose on the truebore Link to comment Share on other sites More sharing options...
echotango Posted May 6, 2019 Share Posted May 6, 2019 (edited) And you can never change the comp on a trubore. Also only come in W/N cut. Both of my KKM barrels are with 1pf of each other. Edited May 6, 2019 by echotango Link to comment Share on other sites More sharing options...
racer-x Posted May 6, 2019 Share Posted May 6, 2019 No difference in accuracy between the KKM & Trubor's I've owned (3 of each). The Trubor's have been 3-5 PF slower with same loads though (compared to KKM). Link to comment Share on other sites More sharing options...
Bdh821 Posted May 7, 2019 Share Posted May 7, 2019 (edited) My KKM barrels are substantially faster than my STI barrels. I dropped my powder charge by 1 full grain Edited May 7, 2019 by Bdh821 Link to comment Share on other sites More sharing options...
Hi-Power Jack Posted May 7, 2019 Share Posted May 7, 2019 4 hours ago, Bdh821 said: My KKM barrels are substantially faster than my STI barrels Does that mean the chamber is tighter, and you have more difficulty getting coated or lead bullets to feed properly ? Link to comment Share on other sites More sharing options...
teros135 Posted May 7, 2019 Share Posted May 7, 2019 My KKM (9 major) barrel is 2 PF faster than my SVI barrel. Both have no difficulty feeding anything I use (124 PD, MG, coated) and don't require any "special" ammo or cases. The KKM chamber isn't any tighter than the SVI. Link to comment Share on other sites More sharing options...
Aircooled6racer Posted May 7, 2019 Share Posted May 7, 2019 Hello: The TruBor barrels are very good barrels and last a long time. KKM barrels in the past were hit and miss on how long they lasted. I am not sure how they are in the last 2-3 years but I will find out on my next build since I can't seem to get the barrels I normally use. The KKM barrels in my Glocks are very accurate even with coated bullets. Thanks, Eric Link to comment Share on other sites More sharing options...
Bdh821 Posted May 7, 2019 Share Posted May 7, 2019 7 hours ago, Hi-Power Jack said: Does that mean the chamber is tighter, and you have more difficulty getting coated or lead bullets to feed properly ? They're all open guns, so I wouldn’t use lead/painted/plated bullets. But theoreticaly yes, the chamber should be tighter Link to comment Share on other sites More sharing options...
theWacoKid Posted May 7, 2019 Share Posted May 7, 2019 9 hours ago, Hi-Power Jack said: Does that mean the chamber is tighter, and you have more difficulty getting coated or lead bullets to feed properly ? The chamber on a KKM has to be finish cut by you or your gunsmith, so that is going to vary barrel to barrel. Link to comment Share on other sites More sharing options...
SSGJohnV Posted May 8, 2019 Share Posted May 8, 2019 My KKM hybrid barrel at 4.65" (commander plus threads) VS my SV Hybrid barrel at 5.4" (gov length plus threads) are the same velocity with the same load. Paster size group at 20 yards. Can't go wrong with KKM, in my opinion. Only thing I know of that ruins barrels or chambers relatively quickly is AA7 (what I use) and the old school moly coated bullets (not Hi-Tek like BBI or SNS) Link to comment Share on other sites More sharing options...
Eros Posted May 8, 2019 Share Posted May 8, 2019 @SSGJohnV You mentioned that AA7 ruins barrels and chambers relatively quickly but you still use it. On average what is the life span of your barrel? Link to comment Share on other sites More sharing options...
SSGJohnV Posted May 14, 2019 Share Posted May 14, 2019 On 5/8/2019 at 4:39 PM, Eros said: @SSGJohnV You mentioned that AA7 ruins barrels and chambers relatively quickly but you still use it. On average what is the life span of your barrel? It is "alleged" that it ruins barrels quickly. I put 30k rounds through my old SV barreled gun with no change in anything. However, a friend of mine had chamber erosion after about 60k. He had to bump his charge about 0.3 grains by the time the chamber was eroded. I continue to use it because it is an extremely slow burning powder (meaning safer), easy to meter, consistent in velocity lot to lot, and at 10 grains per round gives my comp the most gas/is the softest powder. If I had to I would use HS6 as a replacement. Link to comment Share on other sites More sharing options...
Shmella Posted May 16, 2019 Share Posted May 16, 2019 im pretty sure that has been disproven. Link to comment Share on other sites More sharing options...
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