If you are going to try and shoot that far you are going to need to do some experimenting. We can't just tell you what will work. You really need to find a load that will group well at that distance, and then worry about trajectory.

I suggest Precision Rifle bullets if you want to shoot longer ranges. They have better ballistic coefecients than most other muzzle loader bullets.

I shoot 350 grn QT's with 90 grn of 777 and they are 2.5 inches high around 90 yards and 2.5 inches low at 150 with a 130 yrd sight in. And they carry more energy at that distance then a lighter bullet.

Lighter and faster is not always better for long range accuracy. You are doing a lot of guessing here and this is not going to fly in the woods. You are just asking to wound an animal. You need to try a load and see how it actually shoots at that distance so you know where to aim.

And like cayugad said, with that load and sight in you will most likely miss the deer. I think the average size for a deer is 16 inches from belly to back. If you aim at the back you will most likely shoot under the deer unless it is big, then you most likely will not kill it. If you want to shoot out to 200 yards I think you will need a 130-150 yard sight in. And that is assuming you don't miss judge the yardarge by 20 or 30 yards.

And I can't stress it enough that you HAVE to verify what that load will do at those distances before you hunt with it. Don't just assume that because it shoots good groups at 50 and 100 yards that it will at longer distances. As much as these things resemble high powered rifles they are NOT. With the bullets we use and the twist rates in these guns a bullet can destabilize and get very inacurate fast.

My remington would over lap bullet bullet holes at 100 yards with 300 grn XTP's and 100 grns of pyrodex or Clean Shot. At 150 yards they didn't group well enough to kill a deer. I changed bullet styles and weight and played with my powder a little and now I can get around 2 inch groups at 150, which is my limit where I hunt.

Some guys get lucky and the rifle and load they use will pull it off. For others it takes a little work, and some it just won't happen. And YOU have to be capable of 200 yard shoots as well.

Paul