FIRE LAP -FORCING CONE QUESTION

[30calpal]

Hi Veral, another question if you don't mind.  The throats on my Bisley Ruger BH are .4525 /.453  I have the 11* cutter and pilots for the forcing cone.  I also intend to fire lap per your instructions.  Should I cut the FC then lap or lap then cut the FC?
Your insight is much appreciated.  Thanks

[Veral]

  Forcing cones on all modern revolvers are WAY TOO BIG already.  Don't cut on them as making them bigger makes them worse.  Just lap it as is and you'll like results

  If you have the knowledge it is good to polish the firce cones of revolvers, especially if they appear rough or show lead fouling. but it isn't needed for most guns, and even polishing will move the rifling a bit farther away from the cylinder if one isn't carefull.

[greenrivers]

Veral, I have been reading your posts with great interest as I am using a new Vaquero and Montado as blank canvas's for all around hunting and carry guns. I am a new member so please forgive if this question has been asked.
You state above that changing the forcing cone angle to elleven degrees is not beneficial to the accuracy of the hand gun. I understand moving the lands further ahead shortens bullet contact time, but does it not also allow smoother transition from throat to rifling? I speak of cast bullets only as that is all I shoot from any of my handguns. I will be using your system on them, but was waiting to correct the forcing cones. If your experiance dictates otherwise then I will not have to.

[Veral]

  Longer is badder.  Shorter is gooder.

 Clever turkey with words, don't you think?

  The most accurate revolver I've ever loaded for had no forcing cone at all but just an abrupt taper relieving the rifling for about 1/32 inch into the barrel.    Keep in mind the cylinder throats won't let a bullet much larger than groove go into the forcing cone, so why have a heavy equipment diesel fuel funnel for a throat.  If shooting soft bullets which obturate at the pressures of interest, they can swell up and fill a huge force cone and cause such a serious barrel pressure that the barrel and frame has been known to split.

  Using hard bullets like I recommend, chamber pressure has dropped enough that obturation is finished before the bullets leave the cylinder throats.  So, the force cone will only have to size the bullet down into the rifling and guide it sideways a bit if the throats are bored off center to the barrel.