Modified describes a choke. Invector is a system of choke tubes.
Invector is a brand not a choke. Invector is a brand not a choke.
Yes, all Browning Invector and invector plus barrels can shoot steel shot.
Invector was Brownings original choke tubes that came out in 1983. Invector Plus came along later for the back bored barrel shotguns. They are not interchangeable. Invector Plus= late model shotgun, Invector = earlier design shotgun. Both are still available for purchase.
1 notch - full choke 2 notches - improved modified 3 notches - modified 4 notches - improved cylinder 5 notches - skeet no notch - cylinder
Go to Browning.com and type "Invector Choke" in the search function.
Browning made choke tubes.
The Invector, or "Standard Invector" system" was introduced in 1983. A few years later, the Invector-Plus chokes were introduced to fit the new back-bored shotgun barrels. These two choke systems will not interchange. If you have screw-in chokes in your shotgun barrel, the kind of system you have will be stamped on the barrel near the receiver. You must use the proper choke system for your shotgun.
Either Invector or Invector+ depending on how it left the factory.
BROWNING CHOKE CODES (check on rear of barrel, usually on the left, but, sometimes on the right). ( for an O/U open and check flats) * Full *- Improved Modified ** Modified **- Improved Cylinder **$ Skeet *** Cylinder bore INV Browning Invector choke tube system. INV. PLUS Browning Invector Plus back-bored barrels Note: Inv and Inv Plus are not interchangeable. http://www.browning.com/customerservice/qna/detail.asp?ID=100 will give you the numerical data.
I don't think there is an invector plus model. Invector Plus is the choke system Browning uses on newer shotguns.
To change the choke of the shot
Modified is a smaller, tighter pattern than improved cylinder. Basically, the slope in a modified choke tube is steeper than an improved cylinder choke tube.