It will, except
for any slugs marked "rifled barrels only".
Yes, you can shoot a slug from a Marlin Model 55, which is a shotgun designed for shooting slugs and buckshot. It is a smoothbore shotgun, making it suitable for firing rifled slugs. However, it's essential to ensure that the slug is compatible with the specific gauge of your Marlin Model 55 and to follow all safety guidelines when using it. Always check the manufacturer's recommendations for the best performance.
Can you shoot a standard slug threw a modified and or improved?
You can shoot a rifled slug out of a smooth bored barrels only. You want to have an improved or modified choke on when shooting a rifled slug. It helps the rotaion and accuracy of the slug. Never use a rifled slug in a rilfed barrel. You could destroy your gun if the rilfing in the gun and slug do not match. This is not a gamlbe I am willing to take with any of my guns.
head
A rifled slug- yes.
Shooting rifled slugs is the ONLY way to shoot thru a smoothbore for deer. If you shoot sabot slugs thru a smoothbore, it will not spin and therefore not be accurate. For accuracy, the slug must spin out of the barrel. Either shoot a rifled slug thru a smooth barrel, or shoot a saboted slug thru a rifled barrel.
yes
No.
yes
I would not do it if it is choked more than Modified.
Can't be answered without knowing what it is choked.
Any non rifled slug. However for best perfomance you want a "saboted" slug.