I can't say with any certainty but...
should a feller ream the chambers out to the magnum dimensions, I doubt it would be an issue regardless of the barrel dimensions. The SP-101 didn't come by the moniker "Pocket Anvil" for no good reason. 
Complete thread:
- SP101 22 Rimfire - 
Art, 
2015-01-28, 19:23 
- I can't say with any certainty but... - 
Hoot, 
2015-01-28, 21:16
- It occured to me that I ought to buy another adjustable - 
Hobie, 
2015-01-28, 22:44
- I picked up a SP101 at GMG.... - 
Bud, 
2015-01-29, 10:03
- Uncle Mikes...:-) - 
Rob Leahy, 
2015-01-29, 15:55
- Rob....lifes too short - Bud, 2015-01-29, 17:43
 - Onion Sack - 
Tom Richardson, 
2015-01-30, 09:02
- Onion Sack - Catoosa, 2015-01-30, 09:23
 
 
 
 - Uncle Mikes...:-) - 
Rob Leahy, 
2015-01-29, 15:55
 
 - I picked up a SP101 at GMG.... - 
Bud, 
2015-01-29, 10:03
 
 - It occured to me that I ought to buy another adjustable - 
Hobie, 
2015-01-28, 22:44
 
 - I can't say with any certainty but... - 
Hoot, 
2015-01-28, 21:16