View Full Version : Bolt face size

01-24-2014, 07:22 PM
I have a long action I am going to use for a build. I just realized I do not remember what caliber it was when I bought the action. Where and how do I measure to figure out what size the bolt face head?

01-25-2014, 07:31 PM

01-25-2014, 07:34 PM
Got empty brass? If a magnum case fits, it's a magnum. If a 308 or 30/06 based cartridge fits and a mag doesn't, it's a standard bolt head. If 223 fits and the other two don't, it's a 223 bolt face. You can also put the serial number into the Savage Parts Finder and it'll tell you what caliber it was when it left the factory.

01-25-2014, 07:58 PM
From INGO,

Bolt face diameters cheat sheet
Short actions with a bolt face .Dia of .384 +/-
17 Remington
204 Ruger
222 Remington
223 Remington

Short actions with a bolt face .Dia of .470 +/-
225 Winchester
22/250 Remington
6mm Norma BR
243 Winchester
250 Savage
260 Remington
6.5/284 Norma
7/08 Remington
284 Winchester
300 Savage
308 Winchester
338 Federal
35 Remington
358 Winchester

Short actions with a bolt face .Dia of .540+/-
223 WSSM
243 WSSM
7mm Remington saum
7mm WSM
300 Remington saum,
300 WSM
325 WSM
350 Remington Mag.

Long actions with a bolt face .DIA of .470 +/-
220 Swift
6mm Remington
240 Weatherby Mag
257 Roberts
25-06 Remington
6.5x55 Swedish
270 Winchester
7x57 Mauser
7x64 Brenneke
280 Remington
30/06 Springfield
8mm Mauser
338/06 A Square
35 Whelen

Long actions with a bolt face .Dia of .540 +/-257 Weatherby
264 Win Mag
270 weatherby Mag
7mm Remington Mag
7mm Weatherby Mag
7mm Remington Ultra Mag
300 H & H
300 Winchester Mag
300 Weatherby Mag
300 RUM
303 Brit
8mm Remington Mag
338 Winchester Mag
340 Weatherby Mag
338 RUM
375 H & H
375 Weatherby
375 RUM
416 Remington Mag
458 Winchester Mag
458 Lott

Long actions with a bolt face .Dia of .585 +/-
30/378 Weatherby
338 Lapua
338/378 Weatherby
378 Weatherby mag
416 Rigby
416 Weatherby Mag
460 Weatherby Mag
470 Nitro Express

01-25-2014, 09:17 PM
Good list David. What I was trying to figure out was where to measure the bolt head to figure out which of those sizes it is.

Hotolds442, I tried that and am not sure how it should fit. Putting in a 243 case, it seems to fit in, but there is a ring of brass visible looking from the end. Looking at the list above, it seems there are not as many different size faces as I thought.

If that is so, should be able to figure it out.


01-25-2014, 09:29 PM
I got a little carried away with the list and forgot your original question. Oh look a string! From one side directly across to the other side where the shell case sits in. The ring you see is just brass transfer to your bolt face, normal thing.

01-26-2014, 11:18 AM
David forgot the .440 bolt face. 7.62x39 family which includes the ppc family, the grendel family and i am sure there are a few more that use that bolt head.

01-26-2014, 11:38 AM
Enter the serial number here https://store.savagearms.com/partfinder/
that will tell you it's origin.

01-26-2014, 12:36 PM
Yes there are other bolt face diameters, what I posted are the 4 common sizes.

01-26-2014, 01:59 PM
Where and how do I measure to figure out what size the bolt face head?

Use a vernier caliper and measure the face distance on the inside of the bolt head. (Where the case would go.) Most experienced savage people can just look at the bolt head and tell you want it is.

01-26-2014, 02:22 PM
The standard bolt face that I have in my hand right now measures .477
About .004 above the .473 diameter of a 308-30/06 based rim diameter.