Never fire a shotgun without a choke tube installed.
DANGER, DANGER, DANGER
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.
There is no choke for a shotgun "slug", however if you are firing slugs from your shotgun you should get a slug barrel, or cantilever barrel if your shotgun can alternate barrels. If your shotgun cannot do that then you must purchase an alternate gun that is for slugs or get a shotgun that can alternate barrels like i said. If you want to shoot accurately. Technically otherwise you aren't supposed to fire a slug from a field barrel and in some states it is illegal because of the inaccuracy it may wound a deer. ----- For many many years it has been recommended that a cylinder choke or an improved cylinder choke in a smoothbore shotgun barrel is best for slug accuracy. It is not recommended that one fire slugs through full chokes. --230RN
to test it take apart a 410 slug and see if it fits through
Without knowing the particular make up of the barrel or slug, I would say that the answer is NO as slugs are generally designed for a non choked barrel. If you really want to know take your shotgun to a firearms specialist. This guy is essentially right on the money. Take it to a dealer or gunsmith. You should never take the chance and fire a slug though a choke--it just isn't designed for it. Use smooth bore if you want to be safe.
You will have to have the barrels checked by a qualified gun smith to determine what choke they really are. These guns were made by Stevens good but heavy bird guns . full and moified choke settings were standard on these guns Most people with double guns use buck shot in the full barrel and slugs in the modified barrel . If your gun is a12 gauge you can quickly determine your choke setting. take a dime if the dime will not pass the muzzle or is very tight it full choke if the dime is loose it is modified .Keep in mind use standard remmington or whinchester rifled slugs some of the higher pwerd slug can damage choked barrels RWS etc and many choked barrels do not shoot slugs very well at all .If you are hunting at ranges under 40 yard s your old gun will be fine
Take it to a gunsmith.
NO,NO,NO,NO do not chance it, I blew a 20 gauge barrel up that had a poly-chokeI would Google PolyChoke and ask them. I think it is o.k. with the choke set on IC or Cylinder, but ask them first.
DO NOT ATTEMPT TO FIRE BUCKSHOT OUT OF A THREADED BARREL WITHOUT A CHOKE TUBE INSTALLED!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Danger, Danger, Danger
Take your gun to a local gun smith or dealor. They should be able to check to see if your barrel is a full choke. If so, they can shorten the barrel and remove the choke. That way it will become a open choke to allow the use of a slug.While they are shortening your barrel have them mount your site also. Good luck!!!!!!!
Take it to a gunsmith and ask him to measure it. He probably won't even charge you for something this simple. If you have a lot of shotguns to check, you can buy a gauge from him. If a dime does not fit down the end of the barral it was full choke. If it is a modified choke a dime will fit inside. Just my 2 cents
The Glenfield M# 50 was a reduced cost Marlin M# 55. This cost differential was made possible by using a lower grade wood and finish. All the references I have imply that all of these guns (Marlin # 55's)except their slug gun and a variable choke model were issued with a full choke barrel so I will assume that this is also true for the Glenfields. The only way to be sure, though, (other than shooting it and measuring the shot pattern yourself) is to take it to a gunsmith and have the choke measured. This is a very simple process and most gunsmiths will probably do it for free.
10,000 full loads or so.