Rifled Slugs vs. Sabot Slugs - The Lodge at AmmoToGo.com
Slug Country Debates: Rifled Barrel Versus Smooth Bore - River Valley Arms & Ammo
Vepr 12 Gauge Choke Set "Full and Extra Full Chokes are NOT recommended for slug shells" - SGM Tactical
Choke Tubes: A Beginner's Guide
Carlson's 40020 Remington 12 Gauge Rifled Choke Tube for sale online | eBay
A Look into Shotgun Chokes — Butter-nut Sport Shop
Choke Tubes for Home Defense Shotguns - Lucky Gunner Lounge
Choke Tubes: A Beginner's Guide
Update]What choke for slugs? - Outdoor Discovery
Ballistic Machinist - This is a Remington 870 barrel with a built in improved cylinder choke. It has a muzzle diameter of .715 and was made in the early 70's. It has
Chokes for Practical Shotgun - Practical-Shotgun.com