Ammo NOT to use in Smooth bore?

saboted slugs. Not dangerous, but they will tumble in flight through a smooth bore and not hit anything. Otherwise, any factory ammo should be fine, provided you stick to the hull length and gauge for the gun you are shooting.
 
Depends on what type of smooth bore you are talking about. You should not use steel shot in any vintage double barrel and some say it shouldn't be used in any vintage gun whether pump, semi-auto or double..
 
We have shot slugs threw full choke guns for many many years .we had to use one shotgun for every thing .geese in October and deer in December. Slugs will not harm a full choke in a modern shotgun.
 
Pattern your modified choke with birdshot. Shoot 50 slugs through the modified choke. Pattern it again with bird shot. Bet it isn't modified anymore.

We have shot slugs threw full choke guns for many many years .we had to use one shotgun for every thing .geese in October and deer in December. Slugs will not harm a full choke in a modern shotgun.

As long as it's the lead "rifled" slugs it shouldn't do any damage, the "rifling" is just and area of less material to let it deform and pass through chokes without harming them.

Now if you got into shooting a sabot slug, or something a little more solid I bet you would get into a different situation.
 
As long as it's the lead "rifled" slugs it shouldn't do any damage, the "rifling" is just and area of less material to let it deform and pass through chokes without harming them.

Now if you got into shooting a sabot slug, or something a little more solid I bet you would get into a different situation.

Its not a matter of causing damage, as the gun remains safe to use, its a matter of stretching the choke. Probably screw in chokes are more resistant to deforming because they are thicker than a choked factory barrel, but barrel steel is mild, and shotgun barrels are thin walled. If you attempted to push an oversize lead plug through a steel barrel at 16,000 psi using a hydraulic press, something is going to change. Just because a lead slug is pushed by propellant gases, the force is the same, if for a shorter period of time.
 
Take a rifled slug round apart and remove the slug. Take the slug and drop it in the barrel. It will probably drop right through the full choked barrel. The slugs are hollow and made of very soft lead (pure lead) and in no way should harm a modern steel barrel. Just my .02
 
Does that include rifled foster slugs? I know the rifling doesn't provide a spin but aren't they stable to a certain range in smooth bore shotguns?

Take a rifled slug round apart and remove the slug. Take the slug and drop it in the barrel. It will probably drop right through the full choked barrel. The slugs are hollow and made of very soft lead (pure lead) and in no way should harm a modern steel barrel. Just my .02

Like Iceman said, they're hollow in the back, they act along the lines of a shuttle #### in badminton, so they're stable because they are nose heavy.
 
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