Actually not as bad as you might expect. The stock design actually is very good at reducing felt recoil and of course a pad. In fact, the stock is so comfortable to shoot in the bigger bores I used it on the .375 Flanged Magnum project. Also a MN action.
Currently I have 3 stalking rifles built on hex receiver MN actions. ALL came from guns that had been chopped up by someone else. I personally do not believe in taking a good military bolt gun and chopping it if it is a serviceable sample or can be restored to one. Just me.
The calibers are, .50-110 WCF, .405 WCF and the .375 Flanged Magnum. The last one was done a little differently as it has a solid rear bridge where the split bridge used to be and the bolt handle moved back.
If anyone is interested I can post a couple of pictures or at least I think I can.