Headspace Gages for Rimless Calibers

Rimless Caliber

Caliber	GO Gage Order No.	NO GO Gage Order No.	FIELD Gage Order No.
22-250 Remington	HG2225G	HG2225N	HG2225F
22 PPC	HG0PPCG	HG0PPCN	HG0PPCF
220 Swift	HG0220G	HG0220N	HG0220F
222 Remington	HG0222G	HG0222N	HG0222F
222 Remington Magnum	HG222MG	HG222MN	HG222MF
223 Remington	HG0223G	HG0223N	HG0223F
243 Winchester	HG0243G	HG0243N	HG0243F
308 Winchester	HG0243G	HG0243N	HG0243F
358 Winchester	HG0243G	HG0243N	HG0243F
7mm-08 Remington	HG0243G	HG0243N	HG0243F
244 Remington	HG0244G	HG0244N	HG0244F
250 Savage	HG0250G	HG0250N	HG0250F
6mm PPC	HG0PPCG	HG0PPCN	HG0PPCF
6.5 x 55 Swede	HG6555G	HG6555N	HG6555F
257 Roberts	HG0257G	HG0257N	HG0257F
7mm Mauser	HG0257G	HG0257N	HG0257F
280 Remington	HG0280G	HG0280N	HG0280F
284 Winchester	HG0284G	HG0284N	HG0284F
25-06	HG3006G	HG3006N	HG3006F
270 Winchester	HG3006G	HG3006N	HG3006F
30-06 Springfield	HG3006G	HG3006N	HG3006F
30 Carbine	HG0030G	HG0030N	HG0030F
8mm x 57 Mauser*	HG8x57G	HG8x57N	HG8x57F

*Used for checking current SAAMI-specified 19° shoulder angle. Some older rifles were chambered to 20° 48’. Special gages are available. See 8 x 57 Mauser (8mm Mauser) Chamber Headspace Variation and Measurement for further information.