You don't need a Caldwell lead sled. Just curious if you were using sand bags or anything. Heck, leaning against a tree is better than just standing there free handing it.
Yepper on the bore butter. Learned that my first year with a muzzle loader. lol
In regards to the bullet or the powder change first? I don't know. Personally, I would probably use around 100gr and see which bullets group best. Then maybe adjust powder up or down from there. I use the pellets so 100gr worked best for me. I really don't think you need 150gr whether the gun says it can withstand it or not. As a starting point, I think I went 200gr, 240gr, 250gr, then went to the really light and really heavy ends of the spectrum. In the end I found my problem and realized most of these grouped fairly well after I ensured they were seated uniformly. hahah
Yepper on the bore butter. Learned that my first year with a muzzle loader. lol
In regards to the bullet or the powder change first? I don't know. Personally, I would probably use around 100gr and see which bullets group best. Then maybe adjust powder up or down from there. I use the pellets so 100gr worked best for me. I really don't think you need 150gr whether the gun says it can withstand it or not. As a starting point, I think I went 200gr, 240gr, 250gr, then went to the really light and really heavy ends of the spectrum. In the end I found my problem and realized most of these grouped fairly well after I ensured they were seated uniformly. hahah