I provide only published reloading info on the 550 grain and 420 grain weight cast bullets from the Lyman reloading handbook with the purchase of bullets. For information on how my clients utilize Craters in their 45/70 and 450 Marlins, please visit
www.marlinowners.com and type the key words such as “Crater or Craters” in the big bore search forum. The website reloading data is for your information purpose only. Jae-Bok Young’s Bullet Casting will not be responsible for accidents or misuse of the reloading data from the Marlinowners.com.