Thanks for the advise on the ammo. If I get proficient with the 45-70, the plan is to take it with me to Africa when I head over there for the first time (hopefully this next year). I haven't messed with the jack screws on either gun yet. When I finally get my hands on the 45-70 on Christmas morning, my plan is to read the instructions on just how it all works. Perhaps one of you can tell me how it all works instead? Does the the jack screw adjust the left barrel while the right barrel stays stationary? Any advise or observations would be greatly appreciated for both the 30-06 and/or the 45-70.