Bldtrlr...............A 42" 13/ 16 " X .45 cal. oct. barrel makes a very nice lite long rifle to carry w/ a long sight plane. I found my favorite sweet spot load for competition was 62 Gr. FFFG.....440 PRB. Can't remember patch thickness. The rifle did well on targets out to 100 yds. We shot steel knock down targets out to 200 yds. . To knock the cub bear down at 200 yds. , required to hit the bear in the upper half of the target with the .45. Wind strongly affected the .440 ball as well.
My first general purpose long rifle for competition and deer hunting , was a home built copy of a Biven's Bicentennial long rifle in .50. The barrel was a Getz , 44" , C WT, . The weight of the finished gun was about 9.5 lbs. . I was young and strong then with very far sighted vision. The rifle was very accurate with 80 Gr. FFFG , .490 ball ,with mutton grease lube. Old Zip. The .490 ball , 170 Gr. was not sensitive to light wind as was the .45. The 200 yd. metal bear target would fall no matter where the .50 cal. ball hit it , unlike the .45. Never had any friends that hunted deer w/ a .45 round ball , nor have I done that , so can't testify to .45's over all killing power. Longest distance a deer killed by me with my .50 , was 135 yds.. I shot that .50 long rifle in the Gunsmith's match 1988 , and 1989 at the Spring National Shoot Friendship , Ind. The gun barrel was getting worn , had to replace the touch hole liner , and go to a .495 r/b with a .007 patch , still 80GR. FFFG. , still accurate once the fixes were done. Sold the rifle to a friend. I hope this experience is helpful.,,,,,,,,,,,,oldwood