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Competition, Action Shooting And Training. Competition, Three gun, IPSC, IDPA , and Training discussion here.

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Old 03-02-2013, 9:50 AM
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chuckdc chuckdc is offline
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Default For the Open-class folks....

friend of mine is getting ready to re-barrel his Springfield/STI .38 Super Open gun. Current comp setup is from before power-factor was cut back to 165. Since comps have undoubtedly changed since then, what comps are the new gold-standard, if there is such a thing? The old comp really didn't come to life until loads were about 182 or better PF. There's gotta be something better now.
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Old 03-02-2013, 1:28 PM
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First, it's Division, not class
Unless the barrel is worn out, or the comp is a really old 1 or 2 chamber, I'd bet he could get the present comp to work by trying different powders. If he rebarrels, he's going to have to work up a new load anyway and rebarreling an open gun isn't cheap. Do you know what load he is using now?

Last edited by kmca; 03-02-2013 at 1:37 PM..
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Old 03-02-2013, 5:52 PM
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Quote:
Originally Posted by kmca View Post
First, it's Division, not class
Unless the barrel is worn out, or the comp is a really old 1 or 2 chamber, I'd bet he could get the present comp to work by trying different powders. If he rebarrels, he's going to have to work up a new load anyway and rebarreling an open gun isn't cheap. Do you know what load he is using now?
the barrel was the subject of some experimentation with chamber reamers by a previous owner, and has some issues, to say the least. The comp is a 10-port deal from about a dozen years ago or more. It was also tack-welded to the barrel at the time of the "assault weapons" ban, so replacing the whole thing is probably best at this point. Rest of the gun is decent, and worth fixing up.

back when I was helping reload for the thing we were using HS-6 and 115 gr. JHP bullets in Starline brass. The comp really didn't flatten till it was really pushing the pressure envelope. It'd be nice to find something that doesn't have to be at that point.
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Old 03-02-2013, 6:19 PM
sargenv sargenv is offline
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While HS6 is a good 9 major powder, there are likely more modern powders that will create the gasses neccesary to get the comp to work.. Vitt 3n37, Vitt 3n38 are two of these.. SR 4756, Hodgdon Long shot (aks Loud shot), Ramshot Sillouette, and a few others..
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Old 03-02-2013, 6:51 PM
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Too bad someone messed up the chamber. Like sargenv said, with the newer powders I'm sure you could have gotten something to work, especially if you went with a little heavier bullet. I run a 3 chamber comp with a hybrid barrel. You might want to go to BrianEnos.com and ask there. There are quite a few of the big name builders that keep an eye on that forum.
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Old 03-02-2013, 10:07 PM
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Quote:
Originally Posted by chuckdc View Post
friend of mine is getting ready to re-barrel his Springfield/STI .38 Super Open gun. Current comp setup is from before power-factor was cut back to 165. Since comps have undoubtedly changed since then, what comps are the new gold-standard, if there is such a thing? The old comp really didn't come to life until loads were about 182 or better PF. There's gotta be something better now.
Chuckdc,

As an open shooter that has shot Early 90's vintage Open guns and today.

STI Trubor S2 would be good starting point for current design. I'm running this set up with great results on 124 CMJ on top of HS-6 9mm

Every gunsmith has their own favorite. Multi port / hybridcomp / popple holes etc.

http://www.shootersconnectionstore.c...Comp-P767.aspx

Good luck!

DVC
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