Whatever the correct ammunition is for that gauge. Sabot-loaded slugs tend to be somewhat more accurate than so-called "rifled" slugs in most guns.
Improved cylinder
Yes- but accuracy with slugs in any double barreled shotgun is not the best- the lines of the barrels converge. Imagine a very large X. Right barrel will shoot somewhat to the left, left barrel to the right.
The last one I saw today had a 28 inch full choke barrel. Sure I would shoot buckshot out of that shotgun all day. I don't know about slugs though. The box of slugs state that they will shoot out of any choke; however, IC produces the best results.
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.
Lacking a slug barrel, improved cylinder works best for slugs.
rifled choke tubes for sabot slugs and cylinder or improved cylinder choke tube for foster type slugs. you can shoot slugs with semi-auto. experiment to find what cycles the best without jamming.
I have had good success with Federal rifle ammo.
That will depend on your shotgun. The best way to find out is to buy as many different types/brands as you can and shoot them.
the best answer ive found was between 1955-1958
Yes. Slugs are slighty undersized, and are hollow soft lead that can squeeze down a bit. Any choke larger than Extra Full should safely shoot slugs- accuracy may be poor in full- modified works best for most shotguns.
You can shoot slugs in a double. Slugs are best shot through a cylinder bore or improved cylinder choke. The tighter the choke, the more they will be disrupted. There is risk of excessive wear and damage through a tight choke--tighter than Modified Choke.
No, the Mossberg 500 barrel does not fit the Mossberg 600. The two models have different designs and specifications, which means their parts, including barrels, are not interchangeable. If you need a replacement barrel for a Mossberg 600, it's best to look for parts specifically designed for that model.