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Old 07-05-2014, 06:57 AM
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rde1911 rde1911 is offline
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Reaming the forcing cone out to 11 degreesforcing cone Reaming the forcing cone out to 11 degreesforcing cone Reaming the forcing cone out to 11 degreesforcing cone Reaming the forcing cone out to 11 degreesforcing cone Reaming the forcing cone out to 11 degreesforcing cone  
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Default Reaming the forcing cone out to 11 degreesforcing cone

I saw a you tube video of a gunsmith reaming the forcing cone to 11 degrees and at the same time smoothing the first edges of the rifling in the barrel. They said it would make the pistol more accurate shooting lead bullets. I did a search on the forum an did not find any information about this.
Here is a link to the you tube video.
Revolver Forcing Cone Tools - YouTube
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Old 07-17-2014, 05:58 AM
WR Moore WR Moore is offline
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The 11 degree forcing cone was first developed to help out the accuracy of bullseye/PPC revolvers shooting wadcutters. Looking at the revolver pictured, I'd expect the included angle of the forcing cone to be way down on the list of possible mechanical issues affecting accuracy. There are a whole of other potential issues with a greater effect upon accuracy. [Cylinder throat diameter, end play, cylinder carryup, ranging, yoke alignment...........]

If VERY carefully done, it can smooth out eroded/pitted forcing cones. But, it's a very delicate operation and involves the use of gauges to make sure you don't wallow out the forcing cone (cut it oversize in diameter). Doing it right can involve setting the barrel back. It also may or may not improve the mechanical accuracy of the firearm.

Let's be honest. The greatest detriment to accurate handgun shooting is generally the person holding the handgun.
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Old 07-17-2014, 06:56 AM
Yorkie Man Yorkie Man is offline
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I reamed several of my revolvers to 11 degrees and the first thing I noticed was the lack of leading in the forcing cone. I also noticed that the accuracy improved.
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