SabotLoader, all you need to do know is discover the best of both ignitions, and put a musket cap ignition system on your MK-85. IMO it really is the best of both worlds. A good hot ignition. But not powerful enough to partially blow your load out before powder ignition.
I load over 100 grains of 3F BP in my rifle with a 525 grain conical. And it shoots so well that no one would believe me if I told you how well it shoots.
Please explain to people that it only takes 5 minutes or less in additional time to clean the rifle. And also that it has undoubtedly the best trigger of any factory MZ ever made!! Tom.