Moebedda, didn't mean to sound harsh but your post made it seem (at least to me) that you were green and over-ambitious. Nowthat you've shown me to be incorrect in that assumption ( yeah, I know... )I will only remind you 250 yards is a very long ways and beyond the reasonable capability of most muzzleloaders and/or their owners.

Your goal seems very deliberate though.Isuggest you look at meeting the problem with one of two approaches. The first would involve a rifle such as the Knight Long Range Hunter and a medium weight sabot round packing a high BC bullet. Such a load would represent a compromise between trajectory and energy retention. Most of the user reports I've seen regarding the Mustang report it to be a good, solid rifle but not an accuracy king. My guess is the trigger is no way on par with the Knight's. But I've not shot one - so take that info with a grain of salt.


Above is a recent group from Chuck Hill's new Knight LRH and a load that should hold together at extended range.

The other approach would be to use a rifle equally capable of accuracy downrange but firing a heavy weight conical with a snowball's trajectory. Theredeeming thing about such loads is the trajectory is VERY repeatable (and in my estimation actually less prone to upset and drift). I set about a few years back to make one clean kill at 200 yards using such a rifle and managed it - once and the only time I've tried such a shot at game.



The Knight's are often capable of handling both types of loads quite well and, IMHO,wear themost consistently accurate barrels available in the mainstream market. That's one reason a KnightKP1 may be in my future.