What does it take to compete consistently in the world of shotgun sports, simple, an altered shotgun. Back bored shotguns win almost all competition shoots in shotgun sports. Those guys you admire at the trap lanes who just seem to never miss, on hot days will drag out their biggest bored guns, some of these 12 gauge shotguns are bored 10 gauge bore diameter, these big bored shotguns need the wads to be warm in order for them to expand and seal the bore, additionally these guns have extremely short shot strings and throw up a wall of shot.
Boring a 12 gauge shotgun to 10 gauge bore diameter is just a bit to much because the gun will not be consistent and it can only be shot on warm, hot days. The reason for boring a shotgun is simple it shortens the shot string which is the time frame from first pellet impact to last pellet impact. If your going to compete in shotgun sports, its not what you spend for your shotgun, it's how much you will spend on it to make it competitive and this would include going to a gunsmith to have the shotgun fitted to you.
Minimum Requirements For 12 Gauge Competition Shotguns:
Barrel Length: 30".
Chamber length: 2.750".
Bore Diameter: .740".
Chamber To Bore Forcing Cone Length: 1.5".
Bore Finish: 600 Wet Finish, Burnished With 0000 Steel Wool.
Factory Guns:Winchester Model 101 Pigeon Grade Trap Shotgun:
Once again Winchester steps up to the plate to score another first in the factory gun class by offering their new sporting clays gun featuring factory back bored, ported barrels. Their own extensive research and testing has proven that when it comes to back-boring, .742" with lengthened forcing cone is the ideal interior barrel diameter for 12 gauge, ensuring tight, dense, consistent patterns. Any larger in diameter and gases blow by the shot cup and reduce pellet velocity. Too small of a bore diameter and the pellets are deformed as they pass through the forcing cone, causing poor ballistic performance.
These deluxe trap guns dominate the field with sought after high performance advantage giving extras straight from the box.
Advantage 1. A wide 10mm steel runway rib, mid-bead sight and TRUGLO® TRU-BEAD® interchangeable fiber-optic front sight which offers a truer, more technical sight picture.
Advantage 2. The lightweight barrels are highly polished then chromed for ultra bore smoothness which also feature porting and vented side ribs for ultra-fast target acqisition.
Advantage 3. An adjustable trigger shoe fine tunes length of pull.
Advantage 4. Available with 30" or 32" barrels, this length helps shooters lock on target with a much longer definitive sight plane.
Advantage 5. It features the Invector-Plus™ choke system and .742" diameter bore with lengthened forcing cone technology that is world renowned for ideal dense shot patterns.
Why The Extremely Wide Rib:Browning Model BT-99 Trap Shotgun:
The reason for the wide rib is it gives you more platform to sit a clay bird on, all of my bird hunting guns have wide flat ribs with no bead sights, for me the bead sights just get in the way of the sight picture.
Browning BT-99, there is not a better single-barrel trap gun, at any price, than the rugged BT-99. The BT-99 features a chrome-plated chamber, VECTOR PRO™ lengthened forcing cone which minimize shot deformation and maximize pattern uniformity, consistency and density. Back-boring increases bore diameter specifications and decreases friction between the shot cup and the bore to maximize shot pellet velocity and reduce felt recoil.
Advantage 1. Barrel - The BT-99 features a back-bored barrel.
Advantage 2. Chokes - Interchangeable Invector-Plus™.
Advantage 3. Forearm - Bold beavertail forearm.
Advantage 4. Extractor - The BT-99 features an extractor only.
Advantage 5. Rib - High-post, 11/32" rib.