What I meant was a rainbow trajectory with a head wind.
There seems to be this unsuredness that the 260 rem isn't going to make it. That would be my first choice. After that the 7-08 or 243. Stick with the 22" barrel.
The 25-06, mentioned in an earlier post, though not popular, is one of those rounds that is capable of downing game with remarkable ability and is in the comfort zone of most small framed shooters. I don't shoot anything in the .257 diameter. So I don't know what bullets are available. There was a time when the available bullets, in this diameter, weren't the best, although the 257 wby has built quite a name for itself as a plains rifle.
If the 260 makes it, it would be my choice also. Otherwise 6.5x55. The 257 robert's and the 250 sanage would also be great one's but un-fortunately great one's don't always last. The 25-06 is a fine one but for one thing. It makes a pretty good fuss when it goes off and sometimes precieved recoil can mess things up for you. But if they can handle a 308, the 25-06 should be great.
Anyone who shoots a sabot bullet has had the problem with loading the next round with a dirty barrel we have all struggled with it.
Between muzzleloader shots I have done some research and testing on my own to find out what works for me for the next shot. I have been using a product called bore butter and when the muzzleloader is just sitting around I leave it caked in the barrel for protection. Have also found that if I lube my sabots with bore butter they really slide nicely down the barrel....