Hi Pinotguy,

I have a Mauser 66 in 7x66 SE vom Hofe and reload for it.

Factory ammunition is in Germany still available with 140grs Ballistic Tip and 175 grs Partition Bullet (if memory serves well), but expensive.

Empty cartridge cases can be obtained at about 45€ / 20 ea.

Reloading should be done with the slow burning powders, but you can improve the ballistics of the 7mm Rem Mag only by a small amount (if you obey the german laws of the gun proofing).

I especially like the long case neck and the case volume of the 7x66 SE vH.
The obtainable precision is about what you can expect from comparable rifle/cártridge combinations.
My gun barrel is a little bit worn and will produce 1.2" for three shots at 100 meters
(154grs Norma Oryx, R905 = Reloader 22, ca. 900m/s/4000 Joule // 2950fps/2900 fpe)

If you want to have a 7mm Magnum cartridge, the 7mm Weatherby would be roughly similar (ballistically), but cheaper.

(further info on request)

best regards
Rolf