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MONTANA RIFLEMAN BARRELS TECHNICAL INFORMATION
The Montana Rifleman only makes one grade of barrels. This is Premium Grade. All of our barrels are completely hand-lapped to assure that you only receive the best quality.

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Contour
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#
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A
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B
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C
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D
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E
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Maximum Length
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Estimated Weight
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Max Bore Size
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U/L Sporter
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1
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1.180
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2.25
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2.5
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.800
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.570
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22"
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2.5
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.300
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L/W Sporter
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2
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1.200
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2.5
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2.5
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.840
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.600
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24"
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3
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.330
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Reg. Sporter
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3
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1.200
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2.5
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2.5
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.860
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.625
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26"
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3.25
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.350
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Med. Sporter
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4
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1.200
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2.625
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2.5
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.880
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.650
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28"
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4
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.375
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Hvy Sporter
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5
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1.200
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2.75
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2.5
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.935
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.700
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28"
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5
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.416
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PH Sporter
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#1
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1.225
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3
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2.5
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.
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.985
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28"
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6
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.
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PH Sporter 2
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#2
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1.225
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3.25
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2.5
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.
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1.035
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28"
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7
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.
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Contour
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#
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A
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B
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C
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D
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Maximum Length
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Estimated Weight
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|
Light Target
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6
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1.200
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3
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21-23
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.750
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32"
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6
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Medium Target
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7
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1.200
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3.125
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21-23
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.875
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32"
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7
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Heavy Target
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8
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1.200
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3.25
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21-23
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1.00
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32"
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8
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All dimensions are "approximate". We do not guarantee these dimensions and reserve the right to change them at any time.
Bores, Grooves, Twists & Cartridges We Chamber For
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CALIBER
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BORE/GROOVE
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TWISTS AVAILABLE
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CARTRIDGES WE CHAMBER FOR
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17
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.168/.172
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7 1/2, 9, 10
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17 Ackley Hornet, 17 Ackley Bee, 17 Mach IV, 17 Remington
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19
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.193/.198
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12, 14
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19-223
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22 Rim Fire
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.218/.222
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16
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22 Short, 22 L.R., 22 L.R. Match, 22 Bentz 22 Magnum
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22 Center Fire
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.219/.224
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8, 9, 10, 12, 14
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218 Bee, 219 Wasp, 219 Zipper, 219 Ackley Zipper 28*, 219 Ackley Zipper 40*, 222 Rem, 22 Rem Jet, 22 Hornet, 22 K-Hornet, 22-6mm, 221 Fireball, 223 Rem, 22 PPC, 22 Rem BR, 22.250, 22.250 Ackley, 22 Cheetah, 220 Swift, 22 Wby Rocket, 225 Winchester
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6mm/243
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.237/.243
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8, 9, 10, 12, 14
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6mm BR, 243 Win, 6mm Rem, 240 Wby, 240 Gibbs, 243 Super Rock Chucker, 6mm-06, 6mm-06 Ackley, 6mm PPC, 6mm-284, 6 x 45, 6x47
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25
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.250/.257
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8, 10, 14
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25-20 Win, 25-35 Win, 250 Savage, 25-06, 25-06 Ackley, 257 Roberts, 25 Gibbs, 25-284, 257 Ackley Roberts, 257 STW, 257 Wby, 25-300 WSM
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6.5
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.256/.264
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7 1/2, 8 1/2, 9, 10
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6.5 x 54 MS, 6.5 x 55, 6.5-284, 6.5-06, 6.5-06 Ackley, 6.5 Rem Mag, 260 Rem, 264 Win, 6.5 x 300 Win, 6.5 Gibbs, 6.5-300 WSM, 6.5 STW
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270
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.270/.277
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10, 12
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270 Win, 270 Wby, 270 Gibbs, 270 WSM
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7mm
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.277/.284
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8, 9 1/2, 10, 12
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7 x 57, 284 Win, 7mm STW, 7mm Wby, 7mm Gibbs, 7mm Rem Mag, 7mm Rem Ultra, 280 Ackley, 280 Rem, 7mm-08, 7 x 30 Waters, 7mm BR, 7x61 SH
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30
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.300/.308
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8, 10, 12
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30-40 Krag, 30-06, 30-06 Ackley, 30-284, 300 Win Mag, 300 WSM, 300 Wby Mag, 30-30, 308 Win, 300 Savage, 30-338 Mag, 30 Gibbs, 308 Norma, 300 H & H, 30-378, 300 Canadian, 300 Lapua, 300 Rem Ultra, 7.62 x 25 Pistol, , 300 Ackley Mag
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303
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.303/.311
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10, 18
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32-20 (.311 bullet), 7.62 x 39, 7.62 x 54R
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32-40
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.312/.320
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16
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32.40 (.320 bullet)
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8mm
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.315/.323
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10
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8 x 57, 8mm-06, 8mm-06 Ackley, 8mm Gibbs, 8mm Rem Mag
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338
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.330/.338
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10, 12, 16
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338-08, 33 Win, 338-06, 338-06 Ackley, 338 Gibbs, 338 Win Mag, 340 Wby, 338 Rem Ultra, 338-378 Wby, 338 Lapua, 338-284, 338-378 KT, 338-300 WSM
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9mm
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.347/.355
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10
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9mm Luger
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357 Pistol
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.350/.357
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18
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357 Maximum, 357 Magnum, 38 S&W, 9 x 57
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35
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.350/.358
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12, 16
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358 STA, 350 Rem Mag, 35 Rem, 358 Win, 35 Whelen, 35 Whelen Imp, 35 Gibbs, 358 Norma Mag
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9.3
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.358/.366
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14
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9.3 x 74R, 9.3 x 62, 9.3 x 64, 9.3 x 72R
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375/38-55
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.368/.376
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12, 16, 18
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375 Win, 378 Wby, 375-06, 375-06 Ack, 38-55 Win, 38-72 Win, 375 H & H, 375 Wby, 375 H & H Ackley
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40 S & W
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.392/.400
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16
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10mm Auto
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38-40
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.395/.405
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20
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38-40
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40
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.397/.405
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14, 20
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.
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40
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.400/.408
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13, 20
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40-82 Win, 40-90 Sharps BN, 40-72 Win, 40-70 Sharps, 40-65 Win, 40-60 Win, 40-90 Ballard
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40 AE
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.400/.409
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18
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.
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41
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.402/.409
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18
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41 Rem Mag, 41 Action Express
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405
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.405/.413
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14
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405 Winchester
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416
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.408/.416
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14
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416 Remington Mag, 416 Wby, 416 Rigby, 416 Taylor
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404/425
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.416/.424
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14
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425 Express
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44
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.422/.429
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16, 24
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44-40 Win, 44 Mag, 444 Marlin
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43 Spanish
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.430/.439
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20
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.
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45 Pistol
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.442/.450
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20
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45 Colt, 45 ACP
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45
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.450/.458
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10, 14, 16, 18, 22
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458 Lott, 460 A-Square Short, 460 Wby, 458 Win Mag, 450 Alaskan, 45-70, 45-90, 45-100, 45-110, 45-120, 450 Marlin
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475
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.467/.475
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10, 20
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470 Nitro (.475 Bullet)
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50 AE
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.492/.500
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18
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50 Action Express
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50
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.500/.5095
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36
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50-70
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50
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.500/.510
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15, 16, 20, 28
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50-70, 50-90 Sharps, 50-140, 50-110 Win, 50-140 Sharps, 50 BMG (15 twist only)
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If you are interested in a bore/groove and twist that is "not" listed above please contact us with your requirements.
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