RE: 7 mm ultra mag, good gun?
The 7mm Ultra Mags case capacity is too large for the 7mm bore in my opinion.There comes a practical limitto case capacity for a given caliber.A point at which the amount of powder required for small incremental increase in power/velocity is impractical.
It also can limit your bullet selection as there extreme demands placed on the bullets especially the lighter weight rounds.
If you compare the KE levels of the 300 Ultra you will of coursefind that the 300 is considerably higher. The 300 is alsojust as fastwith 150 grain factory ammopushing 3500 fps and 200 grain rounds still at 3100 fps.
If you like 7mm rounds I would go with a Rem mag, Weatherby mag or go 300 Ultra.