Congrats to the young fella!!! Lookin mighty proud.
As for loads. I looked in my Lyman BP book for the .50.
energy at 100 yd for Goex 2f, .490 ball, CCI#11 cap, 32 " barrel 1:60 twist
40gr / 321 ft lbs
50gr / 347
60gr / 375
70gr / 390
80gr / 407
90gr / 427
100gr / 449
110gr / 474
120gr / 502
Suprising little difference between 40 - 90 grs of powder. 106 ft lbs. That being said, I think it might be wise to keep shots to under 100 yds though.
The numbers are different (lower) for shorter barrels.
HA