ORIGINAL: stalkingbear
I don't know how "respected" the "gunsmith" is you talked to, but shooting an 100% soft lead slug through your rifled slug barrel makes absolutely NO difference! I happen to be a professional trained gunsmith for 27+ years, and it sounds like your gunsmith must have been hitting the sauce or something. The ONLY thing I can POSSIBLY think of is after firing massive amounts of rifled slugs, there MAY be somewhat of a lead buildup in the bore, HIGHLY unlikely however, and easily solved with a cleaning.
Neil is right on this one, Again!
I would change gunsmiths.Lead build up is all that might occur. However with the width and depth of a shotgun barrels rifleing, It should just will need a good stiff bushing at BEST? Actually the plastic sabots are worst for build-up on the rifleings!
But I will say again. Lead rifled slug will not shoot as well as the sabot version. (at least the right sabot version) Every barrel and manufacturing type have their likes and dislikes as far as ammo accuracy?
Hope this helps?
ORIGINAL: Savage .17
You can shoot rifled slugs through a rifled barrel, it causes little to no damage at all to your barrel. However, I was told by a respected gunsmith that once you shoot a rifled slug through a rifled barrel, you must not switch back to sabots as this will cause damage to your barrel.