flounder33

I hear ya Ed. At least try it in one step first to see how that works.

Gm54-120

Lee sells a standard .451 .452 and a .454 without the need to order a custom die. I normally use a .454 first before going smaller.

Bronko before you buy a sizing die, you may want to verify your actual land to land. CVA 45s can run pretty large. GM's and T/C's should be close to .451-.452

I prefer mine sized about .001 to .002 over land to land but im using BH209 most of the time.

bronko22000

Now I'm not sure if I need a .451 or .452". The bullets are probably hard cast as they were for my .45-70. I can get 2 dies and size to .454 and then to either 451 or 452 which should work. What do you think?
I have to look around my mess of bullets and see what I can try to plug the bore. I might have a couple .45 Maxiballs laying around.

edmehlig

Bronko, from my limited experience with Lee sizing dies, they seem to size the bullets .5 smaller than indicated. e.g. My 451 sizing sized them to .450.5, 452 die sized them 451.5

bronko22000

Ed I just went into my gun room and took one of the .458s and a plastic mallet and gently tapped one into the muzzle about 1/2 way then tapped it back out with the mallet and a pair of vise grips.
I measured the diameter of the lands and grooves and came up with diameters of .448" and .451" respectfully. You think What diameter would you suggest for the final size? A .451 or .452.

edmehlig

Me, I think I would try the .452 sizing die as from the Lee sizing dies that I purchased they sized the bullet .5 smaller than indicated.