EXACTLY.
Dont get me wrong we all have our "favorite" but most times its simply NOT as universally "great" just what we have found to be best under most circumstances. When that changes WE NEED TO CHANGE to make things work again!!
Try a DIFFERENT POWDER!! I have had great luck with 5744. But many others can be more bulkie and net ya same ballistics and preformance. How fast is your load? Trail Boss ir Tin Star could be the answer if your not too speedy. 3031 works great for many generations as well. I also use alot of Unique but more in 38/55.
CW