MONTANA RIFLEMAN BARRELS TECHNICAL INFORMATION

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

Barrel Contours, choose the design of your custom barrel.

Contour
#
A
B
C
D
E
Maximum Length
Estimated Weight
Max Bore Size
U/L Sporter
1
1.180
2.25
2.5
.800
.570
22"
2.5
.300
L/W Sporter
2
1.200
2.5
2.5
.840
.600
24"
3
.330
Reg. Sporter
3
1.200
2.5
2.5
.860
.625
26"
3.25
.350
Med. Sporter
4
1.200
2.625
2.5
.880
.650
28"
4
.375
Hvy Sporter
5
1.200
2.75
2.5
.935
.700
28"
5
.416
PH Sporter
#1
1.200
3
2.5
.
.985
26"
6
.
PH Sporter 2
#2
1.200
3.25
2.5
.
1.035
26"
7
.

Custom Barrel jobs available from Z-Hat Custom

 

 

Contour
#
A
B
C
D
Maximum Length
Estimated Weight
Light Target
6
1.200
3
21-23
.750
32"
6
Medium Target
7
1.200
3.125
21-23
.875
32"
7
Heavy Target
8
1.200
3.25
21-23
1.00
32"
8

All dimensions are "approximate".
We do not guarantee these dimensions and reserve the right to change them at any time.

Octagon Contours

 

Z-Hat also offers octagon barrels for your next rifle.

Please note that their are no "standard" dimensions in a octagon barrel. If you desire specific dimensions please use these drawings.  Email us for current prices, Rifle.Builder@z-hat.com or better yet check our online Catalog for these custom order barrels.

 

Bores, Grooves, Twists Rates

CALIBER
BORE/GROOVE
TWISTS AVAILABLE
17
.168/.172
7 1/2, 9, 10
19
.193/.198
12, 14
204
.199/.204
9, 11
22 Rim Fire
.218/.222
16
22 Center Fire
.219/.224
8, 9, 10, 12, 14
6mm/243
.237/.243
8, 9, 10, 12, 14
25
.250/.257
8, 10, 14
6.5
.256/.264
7 1/2, 8 1/2, 9, 10
270
.270/.277
10, 12
7mm
.277/.284
8, 9 1/2, 10, 12
30
.300/.308
8, 10, 12
303
.303/.311
10, 18
32-40
.312/.320
16
8mm
.315/.323
10
338
.330/.338
10, 12, 16
348
.340/.348
12
9mm
.347/.355
10
357 Pistol
.350/.357
18
35
.350/.358
12, 16
9.3
.358/.366
14
375/38-55
.368/.376
12, 16, 18
40 S & W
.392/.400
16
38-40
.395/.405
20
40
.397/.405
14, 20
40
.400/.408
13, 20
40 AE
.400/.409
18
41
.402/.409
18
405
.405/.413
14
416
.408/.416
14
404/425
.416/.424
14
44
.422/.429
16, 24
43 Spanish
.430/.439
20
45 Pistol
.442/.450
20
45
.450/.458
10, 14, 16, 18, 22
475
.467/.475
10, 20
50 AE
.492/.500
18
50
.500/.5095
36
50
.500/.510
15, 16, 20, 28

Home Reloaders Handbook of Wildcat Cartridge Design (Wildcat Cartridges) Hawk Contents Wildcat Cartridge Design Headquaters, Z-Hat Specializes in Wildcat Cartridges Classic Rifle Stock H-S Precision 458 Lott Archive Accurate Rifle? Stock Duplicator Express Sights 9.3x66 Sako, Custom Rifles by Z-Hat Custom Barrel Info. Rifle Quote Gun Books Greenhill Formula Client Comments Ackley Research Free Data Form