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Lengthen Forcing Cones To Improve Patterns, Reduce Recoil

Double-duty reamers lengthen short chambers to modern standard or magnum lengths and cut the new long forcing cone at the same time - OR - will cut a long forcing cone without lengthening the chamber for the gunsmith seeking improved shooting performance for his customer. Flute placement, relief and angle are designed to give the best possible results on all types of barrel steel (except on chrome lined barrels, of course!). The 1½" long (approximately) forcing cone created is performance proven to give optimum results in any length chamber. (For complete instructions see below our detailed, illustrated booklet, Measuring and Rechambering Shotgun Chambers.)

Reamers are ground exclusively for us from special, select tool steel by one of the oldest and most respected manufacturers of reamers in the United States. Plus, the hex-drive permits use of a socket and T-handle when tap handles will not operate. Lathe setup not required.


Big Book Catalog, Issue:49, Page:058
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Big Book Catalog, Issue:72,

SPECS: 5-¾" (14.6cm) long overall. 1" (2.5cm) long hex section: ½" (12.7mm) across on 10, 12, and 16 ga.; 7/16" (11.1mm) across on 20 ga.; 3/8" (9.5mm) across on .410 (10.4mm). 1-½" (3.8cm) long forcing cone cutting section. 7 flutes, straight cut. 10 ga.: use on 10 Gauge Magnum Shotgun Chambers ONLY. Do Not Use in 2-7/8" (7.3cm) or other 10 Gauge chambers.

BROWNELLS - LONG FORCING CONE CHAMBER REAMER

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Cartridge: 10 Gauge

Style: Long Forcing Cone

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Cartridge: 12 Gauge

Style: Long Forcing Cone

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Cartridge: 16 Gauge

Style: Long Forcing Cone

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Cartridge: 20 Gauge

Style: Long Forcing Cone

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Cartridge: .410 Bore

Style: Long Forcing Cone