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[batman]

I am reloading 44 mag 240 gr swc and the dimature is .429 is that the size of the resizing die that I SHOULD USE? ,and the mold should be .430?

[blaster]

You should slug your bore and cyllinder to see what your particular gun needs. .430 is industry standard for cast boolits but if your mold drops them bigger by .001-3, as they often do, I would go with a .431 or .432 sizer. If It is a tumble lube boolit I wouldn't size at all.

[Firebricker]

If you want .429 boolit's than use a .429 sizer they allow for a little spring back in the alloy. You need to have an accurate micrometer or caliper if you want to know for sure want diameter you have. There is a lot of variable's with mould's, sizing die's and alloy's. Most mould's should cast a one or two thousandth's over to allow for sizing but you never know till you measure. How are you lubing ? What alloy ? FB