Brownells Brownells Brownells 75th Anniversary - A Shooting Heritage

Enlarges Bore To Easily Change Bore-To-Choke Constictions

Back-boring reamers are invaluable for all shops that do shotgun work, especially choke and barrel modifications. Reamers available in .005" increments from .725" to .740" in 12 ga. Lead angle of reamer matches the angle of most chokes to blend into an existing choke.

Many possible uses. Shortened barrels may be back-bored to within 2" to 3" of muzzle to provide a degree of constriction or "choke" in what would otherwise be a cylinder bore barrel. A choked barrel can be back-bored to enlarge the bore to provide "extra" constriction for competitive shooters. For rough pitted bores, these reamers provide an effective and efficient means of removing pits to enhance both appearance and performance. Faster and more effective than grinding or polishing. 12 gauge, 34" extension handles available.


Big Book Catalog, Issue:68, Page:513

SPECS: Reamers 5" (12.7cm) long. Made of M-7 high speed steel, hardened and drawn. Advise Reamer Stock # from chart.

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4 Item(s)
.730, 12 GA. CLYMER BACK-BORE REAMER
184-030-730WB
12 Gauge Back-Bore Reamer .730 dia.
18403073012 Gauge Back-Bore Reamer .730 dia.

Mfr Part: BR12GA730

$90.00

In Stock

Cartridge: 12 Gauge

Style: Back Bore

.735, 12 GA. CLYMER BACK-BORE REAMER
184-030-735WB
12 Gauge Back-Bore Reamer .735 dia.
18403073512 Gauge Back-Bore Reamer .735 dia.

Mfr Part: BR12GA735

$90.00

In Stock

Cartridge: 12 Gauge

Style: Back Bore

.740, 12 GA. CLYMER BACK-BORE REAMER
184-030-740WB
12 Gauge Back-Bore Reamer .740 dia.
18403074012 Gauge Back-Bore Reamer .740 dia.

Mfr Part: BR12GA740

$90.00

In Stock

Cartridge: 12 Gauge

Style: Back Bore

12 GA. BACK-BORE HANDLE
184-030-012WB
12 Gauge Back-Bore Handle
18403001212 Gauge Back-Bore Handle

Mfr Part: EXTL34

$45.00

In Stock

Cartridge: 12 Gauge

Style: Back Bore

"BACK-BORE" REAMERS