too small boolits

[unclebill]

i think my lee sizer makes my .44mag bullets too small
my ruger nm blackhawk slugs at
bore .4291
cylinder 4321`
i been getting terrible leading with the sized rounds
but i found about 50 keith 245gr lead bullets that are .433 or so
i am going to load them as they are and see what happens

[mdi]

That should work, as a starting point. If that were my gun I would size them to .432" (because I have a size die of .432"). All my revolvers shoot lead bullets sized to the same diameter as the cylinder throats...:mrgreen:

[unclebill]

update
i fired about 30 of the unsized lla keith rounds with almost zero leading
averaging 930 fps

[44man]

.432" is where it will be. But that is small groove for a BH and even .430" should shoot.

[sw282]

l had the same problem with my SW 657 in 41mag..l was having a bit of leading with RCBS 210GR SWC mold l had been casting...l simply rolled a few of them UNSIZED in a bit of LEE Alox and loaded them up. A trip to Shooters range proved those unsized 41s produced no leading and my groups shrunk by a half-inch @ 25yds. l am shooting 5.5gr of TiteGroup and a Fed LPP. App 950fps velocity

[Bzcraig]

What do your sized boolits measure?

[44man]

Do not fool with boolits larger then throat. Your gain is zero.

[Cowboy_Dan]

If the Lee sizes smaller than the throats, you can open it up a bit with sand paper. Work slooooow, it goes fast.

[BAGTIC]

There have been a lot of guns, especially revolvers, that were made with throats too small for the bore. If that is the situation the solution is to open the throat.