the 30/40 krag is very doable i had one.. a friend of mine still does......ream a 30 30 to 30/40 krag...ITS EASY.....THINK ABOUT THIS ......how many post are here saying sticking cases,,,,all are rimless....i have had a few also....NEVER AGAIN....30/40 CAN BE LOADED almost as fast as a 06....and no sticking cases,,,,,i sold mine before i got my crony but it was a good round in the h&r before they started making the STRONGER ACTIONS.....JB... I HAVE HAD 17 REM. A243,FACTORY A 3006 AND A762/39 ALL HAD STICKING CASE PROBLEM AT ONE TIME OR ANOTHER usally right after you shoot that big buck....its a pain in the a// trying to get a ramrod down the barrel while hoping the dear dont get up and run.....jb