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  #1  
Old 03-24-2005, 12:54 PM
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8mm-08 ?


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My local gun shop had a rifle they were selling under cosignment and it was made from an old military mauser but sporter with a scope and it said 8mm -08 on the barrel. The fellow at the gun shop said you had to fire 30-06 through the gun so you could get the correct shouldered brass? has any one heard of such a Cal. before?
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  #2  
Old 03-24-2005, 01:23 PM
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The 8mm-06 was a common conversion post WW II. A 8mm-08 is much less common. I'd check again and see if it's an 06 or 08. I don't know if you'd get enough neck expansion by firing .30-06 shells in it. A 8mm-06 die should have a tapered expander that gets the neck up to the right size and you could start with new brass. It's softer than fired brass so expanding is easier and you'll loose fewer cases.

I think there's a few 8mm-06 shooters here that have done it and can give you better advice than I can.

Bye
Jack
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  #3  
Old 03-24-2005, 04:51 PM
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If it is an 8mm-06 , it is a great cartridge. it is better than the 30-06 especially with heavier bullets. I have had two and ended up giving them to family members who fell in love with them for their performance on elk and bear. It is only about
250 fps slower than top 8mm mag comparing the 06 in 22" and the mag in 26" . In the same length barrel I think the gap closes a lot. like the .264 win and the .270
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Old 03-24-2005, 09:54 PM
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Nosler, Hornady, Sierra, and Speer all publish data for the 8mm-06.

Haven't seen anything for 8mm-08 so you may be out of luck if that's that it is.
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  #5  
Old 03-25-2005, 02:29 PM
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The only 8mm-08 of which I'm aware is the 8x51 Mauser K, which you can form by necking up or fireforming .308 brass to .318". I suppose you could do the same thing to .323". There is another similar cartridge based upon both the .300 Savage and the .308, and that is the 8mm IHMSA International. Are you sure it was an 8mm-08 and not an 8mm-06? The latter was a fairly common rechamber/rebarrel for Mauser barreled actions.
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  #6  
Old 04-11-2005, 11:02 AM
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Since the shop said that it takes an '06 fired once to make brass, it is likely an 8mm-06. Chamber an empty '06 case to make sure.

If it is an 8mm-'06, it is a fine big game round and very easiy to reload. No fire forming if necessary with the correct dies.
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  #7  
Old 04-17-2005, 08:10 AM
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Just make sure you know what it is, 8-06 or 8-08 and then is it .318 or .323 dia. either one should be a fine round. I would really wonder if it is a good idea firing 308 bullets down a 323 bore, should be safe but don't know what it could do to the bore. I think it would be better once you know what you have to use an expander die and reload with the proper size bullets.
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  #8  
Old 10-27-2007, 11:43 AM
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8mm-'06

Quote:
Originally Posted by dager
My local gun shop had a rifle they were selling under cosignment and it was made from an old military mauser but sporter with a scope and it said 8mm -08 on the barrel. The fellow at the gun shop said you had to fire 30-06 through the gun so you could get the correct shouldered brass? has any one heard of such a Cal. before?
8mm-'06 cartridges can be formed by simply running the 30-'06 brass through an 8mm-'06 die. No need to fire form these cases.
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  #9  
Old 11-04-2007, 12:41 PM
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You've left out quite a bit. Does your rifle use the old military mauser bbl.? I have had one made up with a BRNO 29" bbl, cut back to 26". This looks wrong as the step down is long enough for a Rem front ramp sight to be screwed on, down there. Better aethsetically to chop back to the step, but there goes the 26" length, needed, to make the chronograph sing.
What I might consider, is doing a second wildcat on the 8x06, by working over the new 375 Ruger case to imitate the 8x68S Magnum, but in a common, U.S. case. I found a 8X338Win. load at eighty grains, which is close to the Schuler case, and my idea is to simply open up the Ruger case, then push the radical shoulder back, to the 06 Datum point, to get a Poor Man's Ruger, instead of the old 'poor man's magnum'. the Schuler has 14.5 deg. shoulders and the 06 has 17, or so, so the case should share the same, super adrenalin, bolt closing, of the Schuler's African fame. I believe the Schuler is about 3 mm longer than the Ruger, otherwise I'd look to just do the Schuler chambering. The big laugh of the 325 WSM and Rem Short mags is that in the fine print, they say don't trust em to go after really dangerous game, Ha! Herr Schuler was right all along with his conservative profiles. A little tinkering with the side wall dimensions should just about equalize things between their 338 belted and 375R parents. In closing, my BRNO piece is set in a Ram Line syn. stock, so it absorbs almost all the recoil over the bench. More like an 30-06 in a B.A.R.'s recoil soaking action. These 8MM X 06, or whatever else can fit in the 98's, make it hard to get your nose down onto the straight syn. combs, so I'm angling for a holosight mounted forwards, as I am a lefty, and have retained the straight bolt handles on my 98's.
FYI; my BRNO Mauser surplus came from Big Five, was obviously made before 1936,(long bbl.), Beech stock, and would just barely resist closing on the field gage. It wasn't safe, as sold, to use 8X57 ammo, anyways. I stuck with the regular 8 X 06, so I wouldn't cut a chamber shoulder, too deep, for the larger cases, if I later felt that I needed more giddy-up. Speer and Nosler slugs are made for 50KCUP and the quick 7.92 X 57 twist, as opposed to the marginal 11" Schuler twist for the weaker bullets, on the market, back in 1939. If someone actually turned off the butt of your military bbl. to get a 8X308Win. to rechamber, then you're going to run out of steel in the stepped military barrel, or what's left of it. Then you'd probably have to stick with the 8X57AI. Personally, I like the 8X308, but only in a shorty 18" bbl.; say, in a Rem Mod. Seven. It's a quick powder proposition, just like the 243W. in my daughter's 18", M 7. My handloads for her, simulate the older 6mm Lee Navy, with 105 Speer round noses. If you really do have a 8 x 308, then you are heading afield with a 300 Sav. on steroids, so better stick with the lighter bullets. Hornady has a wicked, 8MM, 150gr. Spitzer with a crimping cannelure. These will have to be set out a bit, for the remaining military throating, in a rechambered and shortened barrel. My virgin Rem 06 cases won't chamber, as is. You gotta run them through the F.L. sizer, in my RCBS dies, and only then, will they let you close the bolt. So, it's a complete turnaround from the Century-Big Five, mil. surplus, field gage, floor sweepings.
Good luck.
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