(Gauge) To Caliber Interchangeability Tables

***This information is compliments of Forster Products Inc.

  Rimmed and Belted Gage (Gauge) to Caliber Interchangeability Table

Use the Following Gage

To Check Any of These Calibers

22LR (RIMFIRE)

22 Short, 22 Long, 22 LR Match

30-30 WCF

19 Zipper, 219 Donaldson Wasp, 219 Zipper, 22 Savage Hi Power, 25-35 WCF, 7-30 Waters, 7mm Int. R, 30 Herrett, 303 Savage, 32 Win Sp., 307 Win, 32-40, 356 Win, 375 Win, 38-55 WCF

STANDARD BELTED MAGNUM
.535 in. Diameter

257 Wby, 257 STW, 264 Win, 6.5 STW, 6.5 Rem Mag, 270 Wby, 275 H&H, 7mm Rem Mag, 7mm Wby Mag, 300 H&H, 300 Wby, 300 Win Mag, 30-338 Win Mag, 308 Norma Mag, 338 Win Mag, 8mm Rem Mag, 340 Wby, 350 Rem Mag, 358 STA, 375 H&H, 416 Rem, 458 Win Mag

LARGE WBY MAGNUM
.603 in. Diameter

30-378 Wby, 378 Wby, 416 Wby, 460 Wby

Rimless Gage to Caliber Interchangeability Table

Use the Following Gage

To Check Any of These Calibers

22-250

22-250

PPC

22 PPC, 6mm PPC

220 Swift

220 Swift

222 Rem

222 Rem

222 Rem Mag

222 Rem Mag, 6 x 47

223 Rem*

223 Rem, 6 x 45

243 Win**

243 Win, 260 Rem, 7mm-08, 308 Win, 358 Win

244 Rem

244 Rem, 6mm Rem-244

250 Savage

250 Savage

6.5 SKAN

6.5 SKAN

6.5 x 55 Swede

6.5 x 55 Swede

257 Roberts

257 Roberts, 6.5 x 257 Roberts, 7mm Mauser (7 x 57)

280 Rem

280 Rem

284 Win

284 Win, 22-284, 6mm-284, 25-284, 6.5-284, 270-284, 30-284, 35-284

30-06 Springfield

25-06, 6.5-06, 270 Win, 30-06, 8mm-06, 338-06, 35 Whelen

8 x 57 Mauser***

8mm Mauser (8 x 57)

* 5.56 NATO rifle chambering requires a special, longer headspace gage.
** 7.62 NATO rifle chambering requires a special, longer headspace gage.
***Used for checking rifles with current SAAMI-specified 19° shoulder angle. Some older rifles were chambered to 20° 48’. Special gages are available.