RE: Sabots for deer shotgun?
Remington 11-87, full rifled w/scope. Will shoot Lightfield, Win Supreme Partition Gold about 3.5" at 100 yds. The key for me was barrel cleaning. The plastic sabots leave a huge amount of residue in the barrel. If accuracy is not good, put a good cleaning on it. Make sure you have a solvent that says will disolve plastic fouling. Soak a patch, run it thru and I bet you will be surprise what comes out. Mine groups go to pieces if I don' t clean after 3 shots of the Win. I have done some bench testing while cleaning after every shot. Did manage 4" at 125 yds.
Lightfield are cheaper and shoot great. Good Luck.
Dayton