Pappy, I don't have any T/C LR barrels, just a .22 short match and a .30-30.
The .30-30 @100 yards:
The .22 short at 25 yards with an elbow rest:
The .22 short at about 15 yards:
Bullberry makes good stuff...
.22 LR
.30 Sneezer
I dunno anything about MGM barrels but never heard anything bad about them. So, the short answer to your question is I don't see much difference unless one is dedicated to competition shooting.