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Makers of Precision Gun Barrels and the E.R. Shaw Mk. VII Custom Bolt Action Rifle.
E.R. Shaw Custom Barrels

Caliber and Twist Rates

Use the chart below to select the caliber & twist rate for your E.R. Shaw custom rifle barrel.

Twist rates must correspond to the calibers listed.

Please refer to the    icons in the caliber list to determine which twist rate can be used in your custom barrel. The number in the box corresponds to the number of inches per complete right-hand twist. For example: 14 would mean that your barrel caliber requires a twist rate of 1 in 14 inches.


ER Shaw Caliber and Twist Rates

Available Calibers


9

17 Rem
17 Fireball


12

204 Ruger®
20 VARTARG


8 | 9 | 12 | 14

22 Rem. Bench Rest
220 Swift
221 Rem
22-250
22-250 Ack
222 Rem
222 Rem Mag
223 Rem
223 Ack                                   223 Wylde
224 Wby
224 TTH
225 Win                                  5.56 NATO


8 | 10 | 12

6mm BR Rem                         6mm BR Norma
6mm Rem Ack
6mm Rem
6mm-06
6mm/284
6mmx45
6mmx47                                       6mmx47 Lapua                   6mm Creedmoor
240 Wby
243 Win
243 Ack

10

250 Savage®
250 Savage® Ack
25-06 Rem
25-06 Ack
25-284
257 Roberts
257 Roberts Ack
257 Wby


8 | 9

6.5 Grenel                          6.5x55 Swede

6.5/06
6.5/06 Ack
6.5 Creedmoor
6.5 Rem. Mag                           6.5x47 Lapua
6.5-284 Norma                         6.5-300 Wby
260 Rem
260 Ack
264 Win. Mag
26 Nosler


10

6.8 SPC                              270 Win                               270 Wby


9.5

7mm Rem Mag
7mm Wby
7mm STW                               7mm Rem Ultra Mag
7mm-08 Rem
7mm-08 Ack
7mmx57 Mauser
7mmx57 Ack
280 Rem
280 Ack (SAAMI)
284 Win                                     28 Nosler


8 | 10 | 12

300 AAC Blackout                     300 Savage®
300 Win Mag
300 Wby Mag
300 H&H Mag                            300 Rem Ultra Mag                        30 Nosler
30-06
30-06 Ack
30-338
308 Win
308 Norma Mag


9.5

8mm Rem Mag
8mm-06
8mmx57 Mauser


10

338 Federal
338-06
338-06 Ack
338 Win. Mag                            338 Rem Ultra Mag                       33 Nosler
340 Wby


14

35 Rem
35 Whelen
35 Whelen Ack
350 Rem. Mag
358 Win
358 Norma Mag


12

375 Ruger®
375 H&H Mag
375x8mm Mag
375-338 Mag                             375 Rem Ultra Mag


15

416 Rem
416 Taylor
416 Ruger®


14 | 22

450 Marlin
45/70 Gov’t
458 Win. Mag
458 Lott
458x2 American

E. R. Shaw Custom Barrels
E. R. Shaw Incorporated
5312 Thoms Run Road
Bridgeville, PA 15017
Phone: 412.221.3636
Fax 412.221.4303