I used the exact same rifle, the .50 caliber New Englander, in local matches for several years. The New Englander did very well with 70gr. of FFg. Goex and .495 ball. I used Wally World pillow ticking for patches. The lube was 50/50 water and Balistol. Shot the rifle bunches and no problems of any kind. Loading balls and larger than .495 is a real bear. Incidentally, wash the pillow ticking before use. Cheap by the yard. Best wishes and good luck.