Sp101 forcing cone (now more ?s), need technical advice
Hello, pretty new here and fairly new to Ruger revolvers but not firearms in general. The revolver bug has bit me pretty hard. I have been researching the option of cutting the forcing cone on my SP101 to an 11 degree angle because I have been experiencing fairly severe leading from my handloads. It seems this procedure is helpful in reducing this condition and may possibly help with accuracy. I know there are reloading options to lessen the problem as well and I am exploring those variables.
What has not been conclusive in my reading is how exactly this 11 degree measurement is taken. I can assume that the 5 degree measurement (of factory cone) is between center of bore and cone surface because I can take measurements and confirm by drafting it out. What I don't have is an 11 degree cutter in my hand to look at. So the question is: is the 11 degree a measurement from bore centerline to cone, or an "included" angle that measures from cone surface to cone surface. I am assuming that an 11 degree included angle cut is not what is correct because that would be so close to the factory cut that I can't see how it would help much. Please advise.
I am under the impression that opening up the largest diameter of the cone beyond what the Brownell's literature designates (.02 over caliber) is not a big issue. True?
The critical measurements in the drawing are fairly to scale and as precise as I could reasonably get for the purposes of my question.
I would also like to hear about your success or lack thereof after performing this operation. Perhaps I would be better off just honing the surface of my factory-cut cone? Pictures of your re-cut cone would be awesome too.
Thanks
Hello, pretty new here and fairly new to Ruger revolvers but not firearms in general. The revolver bug has bit me pretty hard. I have been researching the option of cutting the forcing cone on my SP101 to an 11 degree angle because I have been experiencing fairly severe leading from my handloads. It seems this procedure is helpful in reducing this condition and may possibly help with accuracy. I know there are reloading options to lessen the problem as well and I am exploring those variables.
What has not been conclusive in my reading is how exactly this 11 degree measurement is taken. I can assume that the 5 degree measurement (of factory cone) is between center of bore and cone surface because I can take measurements and confirm by drafting it out. What I don't have is an 11 degree cutter in my hand to look at. So the question is: is the 11 degree a measurement from bore centerline to cone, or an "included" angle that measures from cone surface to cone surface. I am assuming that an 11 degree included angle cut is not what is correct because that would be so close to the factory cut that I can't see how it would help much. Please advise.
I am under the impression that opening up the largest diameter of the cone beyond what the Brownell's literature designates (.02 over caliber) is not a big issue. True?
The critical measurements in the drawing are fairly to scale and as precise as I could reasonably get for the purposes of my question.
I would also like to hear about your success or lack thereof after performing this operation. Perhaps I would be better off just honing the surface of my factory-cut cone? Pictures of your re-cut cone would be awesome too.
Thanks
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