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pinotguy
.275 member

Reged: 03/02/07
Posts: 57
Loc: CO

7x66 Vom Hofe - Insights?
#115596 - 27/09/08 01:07 AM

So I guess the primary question I have is, "Can I effectively use some 'American' components (bullets and barrel) for this chambering?"

The reamer I've acquired is ground to CIP dimensions which, from what I understand, means using a .285" bullet. Would the standard .284" bullets provide adequate accuracy? (This will be a hunting rifle.) If not, who offers a premium grade "European (.285)" 7mm bullet and how would I go about obtaining some?

The additional .001" in bullet diameter gives me pause concerning the barrel as well. Is there a barrel maker out there who offers a European 7mm barrel?

Thanks in advance for any assistance in this matter.

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Rolf
.333 member

Reged: 26/02/07
Posts: 402
Loc: Germany, Bavaria

Re: 7x66 Vom Hofe - Insights? [Re: pinotguy]
#115680 - 27/09/08 09:51 PM

Hello Pinotguy,

I think you can use all .284" dia bullets and therefore also a standard .284" dia barrel (use 260mm twist).

The german book of GEVA (aproxiamtely what british call a "proof house") gives the bullet dia as .284" and also the reloading data (we already exchanged a mail) is given for this bullet diameter.
Data for (US)bullets range from 120grs/140grs/160grs Barnes X, Nosler 120grs/140grs Solid Base, 140grs/160grs/175grs Swift A-Frame, 160grs Sierra SP175grs Nosler Partition, 175grs Speer Grand Slam.

To summarize:
yes, I think that there are enough US-bullets in .284" and data you can use!

By incident, I was today on the range and shot with my Mauser 66S in 7x66SE vom Hofe the Hornady 154grs Interbond, but precision was not on par with the Norma 156grs Oryx I shot as comparism.
The Norma was together with the Sierra 160grs HPBT Gameking best in precision (ca. 25-30mm for 3 shots).

best regards
Rolf

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