I ahve no doubt that Jim Shockey had a business plan.
#1 He wanted to promote his own guiding business
#2 He wanted to do something that gave him some *WOW* factor.
He probably looked at what woudl give him this *WOW* factor and saw an opportunity.
He found that noone had completed the full North American Grand Slam of Record Book animals with a Muzzle loader, and this quest would make him famous, and add to the appeal of his guiding business, as wel as his video business.
SO he went for it, and did it.
I've met Jim Shockey on a coupel of occaisons, and I personally know (very well) one of the guys that guides for him.
Shickey is a hunter, through and through. He was an accomplished hunter long before he took up the Muzzle Loader.
TO accomplish what he did with a 300RUM and 6-24 scope woudl be very remarkabe, to do it with a ML makes it outstanding, regardless if the ML is an inline wiht a scope.
Keep in mind, aot of Shockeys hunitng had been without a guide, just him on his own in BC. (not htat it makes a huge difference, as to pass up on the animals he has passed up on because they didn't make book is a feat in itself- guide or no)
Shockey has a sucessful outfitter business in Sask, in BC and now Yukon. His videos and books are sucessful.
If he swiitched guns, it may be for money reasons, or it could be or personal reasons, but he hardly needed to swithc for the cash.
Frankly, if I was as smart as he was, and was as good a hunter as he was, I'd have followed the same path.