hi! welcome! i shoot the same gun only mine says euroarms on the barrel. just like a GMC Sonoma and a chevy S-10, our barrels are made by euroarms and some got stamped dixie and some got stamped euroarms. it's a very good shooting gun once you get a load worked up. the first thing you really need are proper sights for it. the battlefield sights are horrible. you need to get on
www.lrml.org, they are the experts on this gun and the other types of LRML. they can point you were to get the proper sights. i use a baldwin front sight with sight inserts from distant thunder. my rear sight is a dr. goodwins orthoptic AKA a holbrook #4. this will give you the right kind of sights to shoot past 100yrds with accuracy and out to around 1200yrds before you run out of staff.
you will also need to bed your barrel too, the barrel channel is also too deep and your gun will string diagonally to the right. bedding corrects this.
you will also need a platinum lined nipple too, the heavy bullets and powder charges this gun shoots will burn out the factory nipple in about 10-20 shots and accuracy will go to pot. rick weber makes these or i have an extra one i could sell you.
i reccomend that you get some dry .50cal felt over powder wads, 1.5lbs swiss powder. and for bullets DO NOT BUY THE PETER DYSON MOLD, it is a terrible mold and a waste of money IMO. for bullets you should be shooting paper patched bullets, don't get the hex bullets from dixie as they are too big in dia. you should begin by shooting cylindrical bullets of .440 or .442 dia and weights anywhere between 500 to 580grn. i shoot 540's. cleanliness is also critical to the whitworth bore. first off, you should buy a .50 cal jag and then file in hex to match the bore. getting into the corners of the rifling.
clean after every shot, otherwise you will have an awful time loading. use a wiping technique of 1 damp patch followed by two dry to get you started.
head hurt yet?