Forcing Cone

[tx gunrunner]

Here is a pic of a forcing cone after I cut to 11 degrees . It work great for cast bullet and jacket too . It stops most leading in most revolvers and most custom gun makers use the 11 degrees in all there revolvers .

click on pic to enlarge

[CT_Shooter]

TGR,
I have a few questions, being a complete novice who is in total awe of your knowledge and skill.

• Why 11 degrees?
  How did you cut the forcing cone?
  What is the orientation of the cut?
  How did you determine the precision of the angle?

The entire idea of it is fascinating, but how and why you did it is a complete mystery to me.
Thanks.

[PT7]

Here is a pic of a forcing cone after I cut to 11 degrees . It work great for cast bullet and jacket too . It stops most leading in most revolvers and most custom gun makers use the 11 degrees in all there revolvers .

click on pic to enlarge

I ditto CT's questions, tx gunrunner....especially the whys & wherefores of this "mystery." And I have some Qs also.

• ~~~If as you said, this "stops most leading in most revolvers," why isn't it a part of revolver production That would make sense to me.
  ~~~Would most professional gunsmiths, other than custom gun makers, know about this process?
  ~~~If this were available as a gunsmithing package, similar to projects like are done at Bowen Classic Firearms (BCA) located in TN, http://www.bowenclassicarms.com/about.html, is there any name to the process of cutting the forcing cone?

BCA lists numerous projects in their shop. It would be cool to find out if this forcing cone cut is done by their gunsmiths.

A most interesting post.

[tx gunrunner]

TGR,
I have a few questions, being a complete novice who is in total awe of your knowledge and skill.

• Why 11 degrees?
  How did you cut the forcing cone?
  What is the orientation of the cut?
  How did you determine the precision of the angle?

The entire idea of it is fascinating, but how and why you did it is a complete mystery to me.
Thanks.

This should answer most your questions If you do a lot of cast bullet shooting it is worth cutting the forcing cone . I do it a little different then the video . The tool in video will do 32 cal to 45 cal and cost about $80 and it cuts the crown also

https://www.youtube.com/watch?v=WtIBv6VIQGE

A pic is worth a 1000 words . This is the only paper target I shot with this gun after cutting the forcing cone . I shoot this gun only on steel target for SASS/CAS practice ...
click on pic to enlarge

[CT_Shooter]

Thank you for the video link. It was very helpful to watch the process and interesting to learn that the tools are available to rent.

Your target is quite impressive!!! Thanks for the picture.

Do you know if any revolver manufacturers already provide an 11 degree cut on the forcing cone?

[Sir Henry]

This is something I had no idea about. Thanks for posting John.

[CT_Shooter]

I agree. This was a very interesting discovery. Thanks for introducing us to it, TGR.

[tx gunrunner]

Do you know if any revolver manufacturers already provide an 11 degree cut on the forcing cone?

All the high dollar guns and custom gun makes cut 11 degrees only .

Abilene , Seville

http://www.clementscustomguns.com/rugerrevolvers.html

[CT_Shooter]

All the high dollar guns and custom gun makes cut 11 degrees only.

This is a fascinating and very new view of the shooting hobby. Thanks.

[JEBar]

earlier today we dropped of two Remington 11-87 12 ga shotguns with a Texas gunsmith who I have come to trust .... also dropped off our Henry 45-70 for some recoil suppression upgrades .... after reading this thread several times and listening to his recommendation, he will be modifying the forcing cone in the 11-87's .... don't know the degree, am content to leave all that up to him .... looking forward to running some 3" Double-Ought buckshot through it to see how they perform

[RanchRoper]

Very interesting. Thks.

[clovishound]

I have a leading issue with my Model 10. I get some in the forcing cone, and deposition on the frame and cylinder. The forcing cone is rough and appears to have some chatter. It's bad enough that I won't shoot bare cast. I have thought about having mine recut. I can't seem to find a local gunsmith who will do it. I know you can rent the tool over the internet for a little over $30. Looks simple enough.

[tx gunrunner]

I Cutting the forcing cone on a shotgun helps on felt recoil and help save the hull for reloading . I quit cutting my shotgun because I never felt it didn't really improve anything . Now this is my opinion and I NEVER try heavy stuff like 3" mags and or buck shot either .

[JEBar]

I Cutting the forcing cone on a shotgun helps on felt recoil and help save the hull for reloading . I quit cutting my shotgun because I never felt it didn't really improve anything . Now this is my opinion and I NEVER try heavy stuff like 3" mags and or buck shot either .

recoil reduction is our primary interest .... if cutting the forcing cone should reduce any lead shot deformation and improve patterning (even slightly) that will be a welcome bonus .... we've never reloaded shotgun shells but certainly wouldn't rule out doing so somewhere down the line .... our oldest son is in the process of purchasing 26 acres of land (3 miles from our home) on which they will build their home and a shooting range ... once that is done we anticipate burning many more rounds

[JEBar]

picture showing the forcing cone in one of our 11-87 barrels .... as I understand it, the shell fits into the chamber ..... from the end of the shell there is a sufficient gap that allows the end of a shotgun shell to open .... the shot will travel from the end of the shell to where it is forced down sufficiently to travel through the barrel .... when we get the barrel back next month, I'll try to post a picture that will show the modification

[JEBar]

just got back from the gunsmith .... he had completed all but polishing the cutting cone .... we took it out and ran some 3" high brass BB shot through my 11-87 .... as a point of reference, that shotgun has had tens of thousands of shells fired through it since it was purchased in late 70's, so it is one which I've very familiar .... I could feel a reduction in felt recoil .... with a modified choke tube, shooting into a red clay bank at 25 yards I was impressed with the compact nature of the pattern .... the gunsmith is going to make arrangements for us to take the 30-06, 45-70, and both 11-87's to a range where we can test them when we pick them up in about a month .... between now and then we will be out of the area and are looking forward to seeing how they perform when we get back

[Bish1309]

Man, learning something newly daily. Thanks!!!