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.


Available Calibers

9
.17 Rem.
.17 Fireball


12
.204 Ruger®
.20 VARTARG


8 | 9 | 12 | 14
.22 Rem. Bench Rest
.22 PPC.
.220 Swift
.221 Rem.
.22-250
.22-250 Ack.
.222 Rem.
.222 Rem. Mag.
.223 Rem.
.223 Ack.
.223 WSSM
.224 Wby.
.224 TTH
.225 Win.


8 | 10 | 12
6mm Rem. Bench Rest
6mm PPC
6mm Rem. Ack.
6mm Rem.
6mm-06
6mm/284
6mmx45
6mmx47
.240 Wby.
.243 Win.
.243 Ack.
.243 WSSM


10
.25 WSSM
.250 Savage®
.250 Sav. Ack.
.25-06 Rem.
.25-06 Ack.
.25-284
.257 Roberts
.257 Roberts Ack.
.257 Wby.
8 | 9
6.5x55 Swede
6.5/06
6.5/06 Ack.
6.5 Creedmoor
6.5 Rem. Mag.
6.5/284
.260 Rem.
.260 Ack.
.264 Win. Mag.


10
.270 Win.
.270 Wby.
.270 WSM


9.5
7mm Rem. Mag.
7mm Wby.
7mm WSM
7mm RSUM
7mm STW
7mm Rem. Ultra Mag.
7mm Bench Rest
7mm-08 Rem.
7mm-08 Ack.
7mmx57 Mauser
7mmx57 Ack.
.280 Rem.
.280 Ack.
.284 Win.


10 | 12
.300 Savage®
.300 Win. Mag.
.300 Wby. Mag.
.300 H&H Mag.
.300 Rem. Ultra Mag.
.300 RSUM
.300 WSM
.30-06
.30-06 Ack.
.30-338
.308 Win.
.308 Norma Mag.
9.5
8mm Rem. Mag.
8mm-06
8mmx57 Mauser
.325 WSM


10
.338 Federal
.338-06
.338-06 Ack.
.338 Win. Mag.
.338 Rem. Ultra Mag.
.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.
.375 Rem. Ultra Mag.
.375x8mm Mag.
.375-338 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