Slugging my 45-70-What Bullet Diameter

[McLernon]

I am confused------------------again!. In the FAQ they say that the bullet should be less than the groove diameter. Tim as I understand, you are recommending to go .001 or .002 larger than the groove dimension. Can you or someone else set me straight!

Thanks

Mc

[wgr]

if your sizing cast bullets .001 to .002 over groove diameter is about right

[quickdtoo]

The Lyman Cast Bullet Handbook recommends .001" to .002" larger that groove diameter.  

Tim

[McLernon]

Thanks guys!!!!!!!!! Slugging went smoothly with BOTH my Marlin and Pedersoli with groove diameters of 0.457 inches. So the boooooooooooooolit diameter is going to be 0.458 to 0.459. inches.

Mc

[John Boy]

Shooting with black powder, 0.003 over groove diameter does a nice job obdurating lead bullets