esmith ,,, have you ever used a premium sabot slug?? I don't think so. The 20Ga, starts as big a hole as the 06 should make, after perfect expansion,, and only gets bigger. out to 125/150 yards you will be hard pressed to find a better killer for deer sized animals.
Out of the Winchester Supreme slugs, the only the only thing I have found, in over 100 deer, is a .270 with a 130 Siearra bullet, that is better, the
30/06 with 150, 165, and 180's
.243, with 100 noslers
.270 with 150's
Even a .300 Mag with 180 barnes-X moly coats at 3150 from the muzzle, have not killed a deer sized animal at under 150 yards, as fast as those hollow point nosler partition slugs,
or my .270 with a 130 sierra over 56.5 grains of 4831
There is something about those diameter, weight and velocitys, that works.
the 12Ga, .50, 385 grain @ 1900
20ga, .45 260 grain @ 1900
.270, 130, grain @ 3050
For me they just work and work well, and I am leaving out my .454 Cassual pistol, it does a fantastic job,,, just not many people can shoot them.
I'm giving my opinion from what I have personally done,,, not magazine articles I read.