You know they just might shoot very well since they are full bore and the length-diameter would be different. With a sabot a 1" long bullet is pushing it.

If they stabilize there really should not be any difference between the 1-20 and 1-30... So the question is will they stabilize in the 1-30.

The Lehigh/Bloodline is .906" and somewhat marginal in a 1-30, so I have been told, but they work very well my 1-30...