Which do you prefer and why: .45 Colt Lyman 454190 or 452424?

Ian

Notorious member
454190.......for real gunpowder, compressed load.

452664.......for everything else. If you don't like the bevel base, the Lee 452-255RF is really hard to beat.
 

Winelover

North Central Arkansas
Own, exactly, two bullets moulds for 45 LC Blackhawk.

Started off with the RCBS 45-255 SWC PB.

Ended up with MP clone of the 300 grain SAA.

Both will do the job intended for.