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January 18, 2010
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For someone who is more knowledgable than me, I have a question about cyl gap. It's nice to be able to adjust the gap on our Dan Wessons, but I'm wondering how big of an issue it is on a gun I'm looking to possibly purchase.
I'm looking at a 40 or so yr. old SW .32, 30-1. I read on the revolver checklist that bbl/cyl gap should be no more than .006 or .007, and that much more for a snubbie could result in velocity loss.
Is it common for the gap to be more, such as .010? The gun does not appear to have been shot excessively, and it is tight in all areas, but the gap may turn out to be a little more than I expected.
Could someone tell me what is involved in adjusting this, if needed, and how expensive. Could most gunsmiths do it, or is it a factory job?
The seller seems very honest, and says it doesnt show signs of gap problems. How concerned should I be?
Josh P
~Hey Joe … I said where you goin' with gun in your hand~
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November 17, 2008
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Just my two cents worth. BC gap can affect accuracy and velocity. However for the job most folks use a snubby for it is not a big deal. Most people use a snubby for self defense which means 20 feet or less usually so if you can hit a reasonable group at that distance, most are satisfied. Velocity will drop, but again you are working up close. However If you expect top performance from all your stuff, you may want to tweak it some. I am fairly sure most any competent smith could fix you up. It would be great if you could shoot it and see if it groups to your satisfaction. Others with more knowledge than me will chime in I am sure. Good luck and let us know how it turns out.
LB
Wisdom is merely the realization of how little one knows, therefore I am wise.
January 22, 2008
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The b\c gap on my 30-1 appears to be .010 as well. That's probably within Smith's standards.
January 18, 2010
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Thanks folks. I guess we get spoiled with the DW's. I used my DW guage to quickly check my old 1917 SW .45, and it's more than .006 too, cant tell for sure how much until I get another guage, but at least I'm glad to know the gap doesn't seem to be of great concern on the one I'm looking to buy.
Jody, how well do you like your 30=1? Would you mind telling me what ammo you use for it?
Thx again,
Josh
~Hey Joe … I said where you goin' with gun in your hand~
June 5, 2008
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S&W says .005" to .010" is allowed or normal range. My 610-3 is .008 and the old 610 no dash is .005" and they are not lead splitters, the B&C gap is not as big a factor on accuracy until you get out past .010" and its mostly excessive drop but if volecity gets too low the bullet does not get enought spin put on it and then accuracy goes to crap.
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January 18, 2010
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Update: I now own the gun, and the gap is actually a nice .005. The seller had been measuring incorrectly.
Turned out to be a nice little gun. Clean and tight. Thx for the replies.
Josh P
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~Hey Joe … I said where you goin' with gun in your hand~
June 5, 2008
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Looks like you did good, doubt you will ever loose money on the gun.
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Bob Tail RZ 10mm - Bob Tail RZ 38 Super by Keith @ DW - DW 38 Super Guardian
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January 24, 2009
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Waldo Pepper said:Looks like you did good, doubt you will ever loose money on the gun.
I agree. As long as they're well cared for, they only seem to appreciate in value. That's a good lookin' little snubby.
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