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Thread: Drilling in 8x57R 360, case reaming & claw mount adjustment.

  1. #11
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    Afaik there is no restriction or "Export Permit" for sending small (several hundred) amounts of empty, unprimed rifle cases out of Germany, other than from the USA. But 5.6x61(R) v.Hofe brass is not as easily available here , as the cartridge is as unpopular here as the R-2 Lovell is in the USA, about as dead as the Dodo, that is. Why? First, cartridges below 6.5 mm = .25" bullet diameter are illegal for use on any game larger than roe deer. So there is no need here for extreme flat shooting, long range numbers here any more. (the same applies to the 5.6x57). Further, years ago several rifles blew up with Gehmann "factory" ammo. This was the final blow to the small popularity of the vom Hofe number. You cannot simply walk over to Frankonia and buy a box! Cases are made, from time to time, by Horneber only. Only the largest German reloading stuff dealer, http://www.johannsen-jagd.de/data_de...p?navid=2lists them,
    http://www.johannsen-jagd.de/data_de.../seite126e.pdf , but are they in stock? If not, you have to wait for a year or two.

  2. #12
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    Kiwi_Bloke,
    It seems Axle and I pretty much agree that adjusting the point of impact is a "cut and try", or more appropriately an "adjust and try" procedure. I very well understand your desire and the theory you use in making your calculations. However they are dependent on the idea that the scope turns around the axis of the front base. In the case of "swing mounts", this may or may not be the case; but in the case of claw mounts, it can not turn around the front base. The "claws" are very tightly fit to the plate under hydraulic pressure and will not turn. When an adjustment is made at the rear base, the tube of the scope actually bends between the bases. This makes the amount of change in point of impact, relative to thread pitch and base spacing, an indeterminate problem. This is compounded by the fact that the plate at the front base sometimes must be "drifted" one way or the other, thereby introducing still different forces into the scope. Many years of experience of many gunsmiths and hunters, show adjustment as described by Axel is the most practical way to sight in a rifle with clawmounts.
    Mike

  3. #13
    I've certainly had my share of mounts of this type to adjust, including the 5,6x57 RWS and 5,6x61 SEvH mentioned. I had wondered how the closely fitting squared-off front claw mount "pivots", so that is another question answered.

    I had noticed Johannsen has these brass advertised, but also Katja Triebel in Berlin, whom I've dealt with before for brass, bullets and dies for 5,6x57, 6,5x68, 8x68, 9,3x72R and so on. These RCBS 8x57R 360 dies came via Egun. My Drilling in 5,6x61R SEvH has been waiting on a German customs export certificate since July. So just gathering dust there at the moment. I'm aware of the 6,5mm legal minimum for game larger than roe/chammy, (Gamswild) and the effect it had on sales of such things as 6x62 Freres.

    I appreciate that this is an "adjust and try" game, but at least I now know up front, from a quick calculation, what is heavy-handed and likely to spin me off the target with my first 1/4 turn.

    Cases for the 8x57R 360 are annealed now. Just waiting for a calm day to test them. Tomorrow, fingers-crossed.

  4. #14
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    Quote Originally Posted by Kiwi_bloke View Post
    I'm aware of the 6,5mm legal minimum for game larger than roe/chammy, (Gamswild) and the effect it had on sales of such things as 6x62 Freres.
    Anything under 6.5 mm = .25 is legal for roe deer only, not legal for "chammy (Gamswild)". Chamois also requires the 6.5 minimum. But chamois is not a big consideration for most German hunters when selecting a rifle. Each year now about 5000 chamois are shot in Germany. Compare this number to about 600 000 wild boar and 1.2 Million roe deer. So the average hunting rifle has to be effective and legal for boar, as these may appear everywhere and everytime, even if you are waiting for a roebuck only.
    Last edited by Axel E; 12-11-2015 at 09:49 PM.

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