Hello All. I bought a Lyman 429667 4 banger from Midway that is dropping bullets at .426 and .427. I called Lyman to see about sending it back for a different one & the first question asked was "What Alloy are you using? Are you using the Lyman #2 Alloy?". Lyman wants me to send it to them with a few sample bullets.
Before I do that I thought I'd ask, does Alloy really matter on what size the bullets drop at? I know different Alloy's change weight but can it also be the reason for a .004" undersized bullet? My Alloy is a 50/50 COWW & Pure with a touch of Tin. I have been dropping them in water out of the mold & thought that might be the cause but the bullets are the same if I air cool them.
Thanks