Size expander plug .002 0ver bullet size. For a .452 dia. bullet use a .454 x .450 expander plug. this will give you .002 clearance to start your bullet and .002 neck tension.
Additional information
Weight
.25 lbs
Dimensions
1 × 1 × 1 in
45 Pistol Expander Sizes
45Cal (P) .454 x .450, 45Cal (P) .455 x .451, 45Cal (P) .456 x .452, 45Cal (P) .457 x .453, 45Cal (P) .458 x .454