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January 9, 2011
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I shoot all cast in my pistols. Can the forcing cone on a 15-2 be safely cut to 11°?
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Range Officer
Range Officers
May 2, 2009
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You can cut it any angle you want--11 deg is a standard. The angle doesn't really matter; what really matters is that the cut is uniform with the bore to set the bullet straight in the barrel.
SHOOT
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Dans Club
February 22, 2009
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IMO forcing cone angle is one of the least important aspects to shooting cast from a revolver. More important is lube and obturation.
Forgive me if you already know all this, if so- maybe it will help others:
In order for a revolver to shoot cast bullets well, the cylinder throats should be as large or .001 over groove diameter but definitely not smaller. The most accurate way to measure the groove diameter is slugging the barrel. A good pin gauge set will give you the measurements of the throats; forget calipers. That, along with correct BHN (12-14 is plenty), and good lube properties are much more important than forcing cone angle; particularly with cast.
Best Regards,
Ron
Technically, the glass is always full; half liquid, half air....
January 9, 2011
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Thanks for the replies. The cylinders have been reamed. I will shoot it for a while before I decide whether the forcing cone angle job is needed. I am not really excited about removing steel in that area. I haven't heard of DWs cracking forcing cones, just wanted to check.
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Dans Club
February 22, 2009
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kelbro said:
I haven't heard of DWs cracking forcing cones, just wanted to check.
Dans not Smiths…
Technically, the glass is always full; half liquid, half air....
January 9, 2011
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Well, got the forcing cone cut and the cylinders reamed to uniform. Two or three of the cylinders were slightly undersized. Let's see if she shoots any better. Will give it a go this weekend.
January 22, 2008
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Looking forward to an update!
October 13, 2009
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Ron is right on-great post!
One thing to watch with recutting the forcing cone is that one doesn't come up with too thin of a forcing cone area that will crack/split.
Let us know if there is any improvements with the changes! 
January 9, 2011
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Shooting tomorrow. Didn't take much to clean up the forcing cone. Maybe a couple of twists with the reamer.
Will post results. I am shooting a load that I have a lot of experience with in the 15-2 and my 586. The 586 was fired last weekend and showed a little improvement but it was pretty good to begin with.
BTW, this Dan is equipped with the 6" EWK slabside barrel.
January 9, 2011
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WOW! Let me say it again, WOW!
I know that you shouldn't change two variables at a time but this gun will flat out SHOOT now. I think that the flyers were most likely related to the undersize chambers in the cylinder but either way, they are gone now. Not sure that cleaning up the forcing cone did much but the combination was great.
I have never been a great pistolier but today I felt like one :).
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