Ross used a somewhat unusual rifling profile which was specially developed for the ultra-high pressures of the .280.

According to their advertising, it would outlast an ordinary barrel about 3 or 4 to 1.

7x57 performance is very mild for this rifle. It will take more powder to do the same job as with a 7x57,a condition caused by that massive casing.

Most important of all: do have fun!
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