Quickload says that it is 86 grains of total capacity.

Bill

Bill Tompkins is correct. 86 gr. of water converts to 0.34 cu. in. total (empty) case capacity. With a 170 gr. bullet seated to one diameter (0.323 in.), the case volume available for gunpowder becomes 0.32 cu. in. If you use a recommended gunpowder like IMR 4350, with a Bulk Density of 225 gr./ cu. in., 72.0 gr. will result in 100% Fill.

This is backed-up by the Hornady manual which show that 72.1 gr. of IMR 4350 behind a 170 gr. JSP-RN bullet gets 3100 fps muzzle velocity from a 28 in. barrel. To be safe, always start with a charge weight of gunpowder below that value.

You can also use the ballistics data for the 8 mm Remington Magnum; both cases being nearly alike. However, the 8 x 57 mm case is slightly smaller by about one grain weight (of gunpowder) capacity.

Good shooting.

Robert

I�m still looking for reloading data. I know no data that will reach factory ballistics. I contacted Lapua/Vihtavuori abou that, stating that I think VV N 560 should be a top powder. They sent me the following:

"Sorry that my reeply took such long time, but here is N560 starting charges
for bullets you mentioned:

200 grs Nosler Partition COL = 86.5 mm

N560 starting charge 4.45 g

220 grs Nosler Partition COL = 86.5 mm

N560 starting charge 4.30 g

Have you ever tested Swift 220 grs A-Frame? This one might work well with
the 8x68S, which requires strong bullets."

I hope they send me the top loads with velocities as well. g/ 0,0648 should get You grains.

Good shooting! H

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My thoughts were for a wildcat launching a 6.5 or .30 bullet. I know of one guy who wants to try 8mm for 1kBR though. Sounds interesting.

Thanks again, Lee

You would be right in there kicking and screaming with some of the best today. Some are using the 6.5 x 68 and a couple are using the .30 Boo Boo which is the 6.5 x 68 necked up to .30 caliber. I have one of each started for next year just to see what they can do.

Bill

David Tooley is from the USA, in North Carolina. he calls those the BooBoo line. (can you think of a better companion for the Yogi line?)

I've heard of them, but what I'm thinking of is a cut-down .264 bullet launcher. A bigger PPC, if you will. Not new ground, just scaling up slightly.

I like the idea of using the 8x68. A big case without a belt that will work in a Remington 700.

I seem to have missed something: why would somebody make a 6.5 wildcat based on the 8x68S?? There is something like a 6.5x68 already there. You may get brass from RWS or Hirtenberg.

This is a cartridge for Chamois hunting. My father has a Steyr in that caliber and I personally have taken some with it. I never fired it for groups, factory ammo is much too expensive, but the sighters were all in the same place, and effect on game was awesom. Xept on too large game: the 6.5x68 I would not recommend for Red deer.

Good shooting and thanx for the loading data! H

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quote:

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Originally posted by LongDistanceOperator:
It's not in my reloading manuals.

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Whilst "playing" with Quickload I measured case capacities of some actual cases. For a RWS 8x68S case, 67.5 mm/2.65" long the case volume was 87.9 grains of water.

Guus

quote:

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Originally posted by aHunter:

.....I seem to have missed something: why would somebody make a 6.5 wildcat based on the 8x68S?? There is something like a 6.5x68 already there. ........

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I think the answer may be we Yanks can't resist "improving" factory rounds. In America, wildcatting is almost as cheap as a custom barrel in a factory chambering. There are no stringent government regulations or tests.

Thinking about it, It seems that either round could be good for 1,000yard benchrest. There are 8mm Match Kings available in Europe......

hmmmmmmmmmmmm......

Bill

quote:

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Originally posted by LongDistanceOperator:
I've heard of them, but what I'm thinking of is a cut-down .264 bullet launcher. A bigger PPC, if you will. Not new ground, just scaling up slightly.

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hi lee,
contact michael u., he's working on this exact plan!

mfg,

dcjs

I talked with Michael on the telephone and he told me about it. I didn't want to mention it here.

I'll build a 1kBR rifle with that cartridge. Maybe a Heavy Gun.

Have you seen the rifles used at Williamsport? I'm going on the first weekend of November. It's not a registered match, so I will have plenty of time for photos. You should go next year's World Open in July with Michael.

How is your 8.5 Reb (?) doing?

With Sierra now offering a Matchking in 8mm, what do y'all think of 8x68 for long-range?
(Target shooting. I have no experience hunting, let alone at long range)

[This message has been edited by LongDistanceOperator (edited 02-10-2002).]