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Bolt face diameter's

 
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  #1  
Old 12-13-2008, 11:45 AM
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Location: Texas
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Bolt face diameter's

Some times when considering a rebarrel and chamber or cartrige change you need to
know what round will work without boltface and extractor work.

I have a cheat sheet/ready reference and thought I would share it with every anyone
that is interested.

All of these groups of cartriges should interchange without bolt face and extractor
work.( some work on recever rails may be needed to improve feeding ).

As far as wild cats what ever the parent case was it should work in the action listed.

I know this list is not complete but it's close.

Short actions with a bolt face .Dia of .384 +/-
17 Rem, 204 Ruger. 222 Rimingtion, and 223 Rem.

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

Short actions with a bolt face .Dia of .540+/-
223 WSSM, 243 WSSM, 25 WSSM, 7mm Rem saum, 7mm WSM, 300 Rem saum, 300
WSM, 325 WSM, and the 350 Rem Mag.

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

Long actions with a bolt face .Dia of .540 +/-
257 Weatherby, 264 Win Mag, 270 weatherby Mag, 7mm Rem Mag, 7mm Weatherby Mag, 7 STW,
7mm Rem Ultra Mag, 300 H & H, 300 Win Mag, 300 Weatherby Mag, 300 RUM, 303 Brit,
8mm Rem Mag, 338 Win Mag, 340 Weatherby Mag, 338 RUM, 375 H & H, 375 Weatherby,
375 RUM, 416 Rem Mag, 458 Win Mag, and the 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, and the 470 Nitro Express.

I hope this information helps in deciding what your next build will be and minimize some
of the cost.

J E CUSTOM
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Last edited by ss7mm; 12-23-2010 at 04:57 PM.
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  #2  
Old 12-14-2008, 01:30 PM
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Re: Bolt face diameter's

that was vary good I was going to do something like that but cant afford it going to re crown it. The question I got is? What does lapping the lugs do and what about a jeweled bolt
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Old 12-14-2008, 03:24 PM
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Location: MS
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Re: Bolt face diameter's

Hey you forgot the PPC

Thanks for the info, saves a lot of thinking, which in my case isnt a good idea
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Old 12-14-2008, 05:20 PM
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Re: Bolt face diameter's

Quote:
Originally Posted by cva54 View Post
that was vary good I was going to do something like that but cant afford it going to re crown it. The question I got is? What does lapping the lugs do and what about a jeweled bolt

Lapping the recoil lugs increases the contact to 100% between the bolt and the recever.
this helps prevent the bolt from moving when fired and distributes the loading of the bolt
and recever equally improving accuracy.

It also smoothes the surface so the bolt will ingauge and dis-ingauge easer.

But I don't recomend lapping unless you can lapp before final head space or you will increase
head space to an unexceptable amount.

If the head space "Is" tight then lapping will loosen it .

Jeweling the bolt helps hold oil/lubricants on moving parts and also makes it look better.


J E CUSTOM
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Old 12-14-2008, 07:55 PM
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Re: Bolt face diameter's

Quote:
Originally Posted by eddybo View Post
Hey you forgot the PPC

Thanks for the info, saves a lot of thinking, which in my case isnt a good idea
Thanks Eddybo !!!!

The reason it's not on my list is because it is based on the old 220 russian case and falls
between the bolt face dia of .384 and .470 ( it is .445 and is to loose in the .470 face )
so you must open up the .384 to get proper extraction.

Thanks
J E CUSTOM
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  #6  
Old 01-12-2009, 09:09 PM
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Re: Bolt face diameter's

Thanks for posting this thread... Very useful
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  #7  
Old 01-13-2009, 02:27 PM
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Join Date: Apr 2008
Location: Birmingham, AL
Posts: 57
Re: Bolt face diameter's

J E -

A quick question...what is the estimated cost to change a .540 bolt face to a .470 bolt face, say on a LA Winchester Model 70? I'm shopping for a Win Mod 70 stainless steel to build a 338-06 AI on and I'm finding a good many 7mm, 300 WM and .338 WM versions for sale. Not finding too many used SS 30-06, .270, 25-06, etc.

Thanks!
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