AS TAUGHT.... Plastic sabot slugs were made to run thru a "slug" barrel with rifle grooves... the plastic gets into the grooves and spins...
Rifled slugs are not as tight of a fit so they just "run down the smooth barrel" and once in air the grooves "hook" the air and that imparts the spin...
Running the lead rifled slug down a rifled slug barrel will load it with lead and the rifling in the barrel will not match the slug grooves so a wobble may happen. Once a smooth plastic projectile leaves the barrel there is nothing to impart spin which is like a badly tossed football... NO SPIRAL=NO ACCURACY...
Does that help?
Brent
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