I will tell you that I have an older rangefinder from Bushnell and for the most part it works OK. One thing I did notice this antelope archery season was. It will not pick up a black cow at 25 yards. We have a herd of cattle come into the water hole so I thought it be perfect time to get some ranges from around the water hole. I could pick up all other color cows except the black ones. My buddy was using a new Luepold and he picked them all up just fine. It got me thikning if I was on a moose hunt or bear hunt would I have been able to pick them up if I needed nto range them. So I beleive before archery season next year I will have a new rangefinder of some sort.
Goose: Instead of trying the range finder right on that black cow how about ranging just under it or off to one side or the other. That way you may not need to buy a new one. That is unless you really need an good excuse to buy one of the newer one.
By the way I hope that your wife isn't reading this reply.
I think mine is a yardage pro and it works fine for me. Sometimes i think I need a new one, but I don't so I keep it. The range finder is one tool I would not like to be without. Some guys I hunt with don't carry one, but whether rifle or bow I always have mine. I like to know how far it is. I am not sure if i could have made the shot on my mountain goat without it. Too many variables involved without having to guess about the distance.
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....