Im thinking about purchasing a used gen 2 G22 for relatively cheap. but i have NO NO NO desire to own a .40s/w gun ever again. (i sold my 27 because i hated it, and i LOVE my other glocks) so other then 9mm, and i believe 357sig, what caliber could i go to with this? im looking to go to 10mm auto if possible, but what all would be needed? im assuming only the 357sig conversion will let me use the .40 mags? also links to sites that sell the needed parts would be nice too..