Repeat ... do not shoot this shotgun without a choke tube installed. You will ruin the threads. If all that you have are the Full and X-Full choke, my advise is to get on line and buy the Mod. and Imp. Cylinder tubes as well. That way you'll be good to go for any wing shooting as well as small game .... and larger birds such as geese and turkey.

In my opinion you are doing the right thing buying a rifled slug barrel rather than use a smooth bore and rifled slugs. No doubt the later combo will kill medium game out to around 50-100 yards, but that combination can be fairly iffy as far as accuracy. The combination of a rifled barrel and the latest sabot slugs should result in great groups at 100 yards and will increase the down range effectiveness about 2 fold.