adjustable choke

adjustable choke

[ə′jəs·tə·bəl ′chōk]
(petroleum engineering)
A choke fitted with a movable conical needle of sleeve that can be changed with respect to its seat so that the rate of flow can be varied.
References in periodicals archive ?
Just how good are the older adjustable chokes compared to the newer tubes?
There are even several 20-gauge combination models with adjustable synthetic or fixed wood stocks with two barrels: a 22-inch general purpose, adjustable choke barrel for upland game and a rifled, ported slug barrel for big game.
TruGlo also caters to those with an affinity for smaller birds through their Titan Adjustable choke tubes, which can be adjusted in the field without the need for tools.
TRUGLO gives waterfowl hunters ultimate flexibility with the Titan Adjustable Choke Tube.
These adjustable choke valve snubbers are typically used to protect pressure gauges from pressure perturbation, surges and fluid hammering, often caused by reciprocating compressors and pumps.
I had a Stevens pump with a Herter's adjustable choke. Paper No.
The other option would be to have a gunsmith install either some type of screw-in choke system or add an adjustable choke to the barrel.
The man's pre-war battery included a custom-built .30-06 (action not specified, most likely a Springfield, possibly a Mauser or Enfield); a Winchester 52 Sporter .22 LR; a 12-gauge Remington 31 with 26" barrel and adjustable choke and a Colt Officer's Target Model .22 revolver.
Titan Adjustable Choke Tubes Changing chokes while on a multi-species hunt or after the realization that shot distances aren't panning out as originally planned can be a challenge, especially while in the field.
To provide the ultimate in convenience, TRUGLO designed their screw-in Titan Adjustable Choke Tubes with the idea that hunters should be able to swap choke tubes while in the field--without any tools.