Can you expand on what you know about .458 vs .459. I need to put in a call to Wilson Combat and find out how closely their specs are to a Marty barrel vs a RRA. Do you know where the differences are? Is it just in the chamber, or the bore, or both? I would really like to give those 405s a try but don't want any issues. I am guessing they will fire through a Marty barrel just at the risk of bumping up to higher/unsafe pressures?
P.S. Sorry to hear about your bear trouble, It has been a bad year for that with the poor snow pack. Luckily we are low enough in elevation that we don't see them around our place... have had a few incidents from our friendly neighborhood mountian lion though.