Gunner Asch on Sat, 07 Sep 2013 04:15:13 -0700
typed in rec.crafts.metalworking the following:
On Sat, 07 Sep 2013 02:11:09 -0700, pyotr filipivich
wrote:

Gunner Asch on Fri, 06 Sep 2013 23:14:50 -0700
typed in rec.crafts.metalworking the following:
On Fri, 06 Sep 2013 19:01:27 -0700, pyotr filipivich
wrote:


From my reading, forcing cones on revolvers tend to be larger,
because of the issue of indexing. That is, loose tolerances or worn
mechanism may result in a chamber not lining up with the barrel, Sot
he manufacturer just makes a big funnel at the on end of the barrel to
catch the bullet in, and guide it to the center of the barrel.

Of course they are larger. Now there are various things to
consider....

http://castboolits.gunloads.com/arch...p/t-36141.html

http://castboolits.gunloads.com/arch.../t-122111.html

http://castboolits.gunloads.com/arch...p/t-90453.html

Thought you might like an additional problem...chamber throats along
with forcing cone angles (I ream to 11' btw)

"Forcing cone angle can be from 3 degrees to 45" Oy.

I just spent 2 hours trying to fix the bloody drawing. It doesn't
reuse line items - you erase point 4 and make a new point it is point
5. I'm up to point 1504, circle 359 - and it is still not even
approaching done. It looks "okay" but - unclosed circles, and such.
More problems than I can handle.

Practice makes Perfect my son. You wanted a difficult project to keep
you amused ..and you picked a very good one!

there is amused, and then there is frustrated. There's wire frame
and there is "sketcher" - solids. Wire-frame lets you draw a circle
tangent to these three points. Sketch doesn't.
As I have said, I could probably knock this out on the drafting
table with paper and pencil faster.
But I am exploring some of the other areas of the program.
--
pyotr filipivich
"With Age comes Wisdom. Although more often, Age travels alone."