Possible, but, not recommended.
Improved Modified.
Follow manufacturer's instructions.
Choke tube, choke wrench, box, owner's manual,
BROWNING CHOKES AND THEIR CODES (ON REAR LEFT-SIDE OF BARREL)* designates full choke (F).*- designates improved modified choke (IM).** designates modified choke (M).**- designates improved cylinder choke (IC).**$ designates skeet (SK).*** designates cylinder bore (CYL).INV. designates barrel is threaded for Browning Invector choke tube system.INV. PLUS designates back-bored barrelsIf you have any problems trying to figure it out, call or write Browning. You can contact them on their web page at Browning.com.
No. A choke tube slips into and screws to the muzzle end of the barrel. It can only decrease the inside diameter.
4 notches = cylinder choke (open), and one notch = full choke (tight)
You can purchase a choke tube for a Smith & Wesson 3000 shotgun at various sporting goods stores, specialized gun shops, or online retailers such as Brownells, MidwayUSA, or Amazon. It's important to ensure the choke tube is compatible with your specific shotgun model. Additionally, checking manufacturer recommendations or forums dedicated to shotgun enthusiasts can provide guidance on the best options available.
Never fire a shotgun without a choke tube installed. DANGER, DANGER, DANGER
Should have choke tubes, being that you can change it to whatever choke you want, so there would be no marking on the gun. There would be markings on the end of the choke tube though, usually between 1-5 lines. Not positive on which means what, but I believe the higher the number the tighter the pattern. But take that with a grain of salt.
Soak in diesel overnight to loosen dirt/debris, use choke key supplied with gun
Try e-gunparts.com
Best left to a trained gunsmith