It's a little fast for round ball especially if loaded up to higher velocities but the REAL bullet should do pretty well in this. I would suggest you try a few loads starting about halfway between the lowest & highest, working up from there to see how groups hold. That is the best way to tell. If using round ball I would try a slightly smaller ball with thicker patch material ( like a .490 instead of .495 ) cause the thicker patch will hold up better in the rifling.
Without doubt though these faster twist newer rifles are designed for the 250 to 400 grn "buffalo" bullets.
I went through my loading manuals and I did find the CVA Stalker in 50 cal with a 28" bbl & 1:32 twist. It had 3 seperate load data entries. (Gun Digest Black Powder Loading Manual #4 )
#1 was for 490 Rd Ball with loads from 70 to 90 grns of 2f & .015 patch
Muzzle Velocity from 1689 to 1868fps & Muzzle Energy of 1121 to 1372fpe (respective)
At 100 yds 980 - 1045fps & 378 - 430fpe
#2 was 90 gr 2f w/ 225gr CVA HP Sabot
Statistics: At the Muzzle, 1649fps - 1359fpe
AT 100 yds 1319fps - 869fpe
#3 was 70 to 90 grn 2f w/ 385 Buffalo Bullet using 'Slick Load' lube
Statistics: At the Muzzle, 1310 to 1383 fps & 1467 to 1636 fpe (respective)
AT 100 yds 1051 to 1106 fps & 945 to 1046 fpe
This is the best info I can find for you... "DOC" Jim R. Shooting BP for over 40 yrs
Without doubt though these faster twist newer rifles are designed for the 250 to 400 grn "buffalo" bullets.
I went through my loading manuals and I did find the CVA Stalker in 50 cal with a 28" bbl & 1:32 twist. It had 3 seperate load data entries. (Gun Digest Black Powder Loading Manual #4 )
#1 was for 490 Rd Ball with loads from 70 to 90 grns of 2f & .015 patch
Muzzle Velocity from 1689 to 1868fps & Muzzle Energy of 1121 to 1372fpe (respective)
At 100 yds 980 - 1045fps & 378 - 430fpe
#2 was 90 gr 2f w/ 225gr CVA HP Sabot
Statistics: At the Muzzle, 1649fps - 1359fpe
AT 100 yds 1319fps - 869fpe
#3 was 70 to 90 grn 2f w/ 385 Buffalo Bullet using 'Slick Load' lube
Statistics: At the Muzzle, 1310 to 1383 fps & 1467 to 1636 fpe (respective)
AT 100 yds 1051 to 1106 fps & 945 to 1046 fpe
This is the best info I can find for you... "DOC" Jim R. Shooting BP for over 40 yrs
