The Firing Line Forums - View Single Post

rangerco · June 25, 1999, 09:37 AM

First, depending on how fancy you want to be, you either have the schematic for the reamer drawn by a CAD man (computer aided drafting) or have some firm or individual grind a reamer to your specifications. NOT CHEAP . Taking the 10 mm down, maintiaining angles... on top of the cost of the reamer. If you do the reamer first, then you can measure for the picture later... THEN NAME IT... From there it is all down hill, just expensive. Any decent gunsmith can use the reamer to cut the chamber in a barrel and fit the barrel to some kind of action... BRASS is the "flip side." Die makers like to have a fired case or two to use making the dies... Usually you can only go down about 2 calibers without too much trouble: 40; 38; 36; 32; 30; 28; 26; 24... so you could take a bunch of used dies (often cheap at gun shows) and cut them off so you can force a 10 mm case into the important part... Neck anneal the case, I would guess at least twice. Be prepared to ream the neck 'cause it will thicken... Then spend alot more money for "form dies" ... Nonte had some interesting remarks about this sort of thing in one of his books. Of course, I do not remember the title. He just drilled holes in thick sheet steel using the nearest standard bit, chamfered the holes a bit and worked the case neck in gently... for old, out of production black powder numbers... GOOD LUCK.

June 25, 1999, 09:37 AM	#4
rangerco Member Join Date: June 18, 1999 Posts: 56	First, depending on how fancy you want to be, you either have the schematic for the reamer drawn by a CAD man (computer aided drafting) or have some firm or individual grind a reamer to your specifications. NOT CHEAP . Taking the 10 mm down, maintiaining angles... on top of the cost of the reamer. If you do the reamer first, then you can measure for the picture later... THEN NAME IT... From there it is all down hill, just expensive. Any decent gunsmith can use the reamer to cut the chamber in a barrel and fit the barrel to some kind of action... BRASS is the "flip side." Die makers like to have a fired case or two to use making the dies... Usually you can only go down about 2 calibers without too much trouble: 40; 38; 36; 32; 30; 28; 26; 24... so you could take a bunch of used dies (often cheap at gun shows) and cut them off so you can force a 10 mm case into the important part... Neck anneal the case, I would guess at least twice. Be prepared to ream the neck 'cause it will thicken... Then spend alot more money for "form dies" ... Nonte had some interesting remarks about this sort of thing in one of his books. Of course, I do not remember the title. He just drilled holes in thick sheet steel using the nearest standard bit, chamfered the holes a bit and worked the case neck in gently... for old, out of production black powder numbers... GOOD LUCK.