dogcatcher,

Actually, the 6.5x55 has a relatively steep shoulder angle and body length, especially when compared to other cartridges of the day--and many later cartridges.

As I mentioned earlier in this thread, considerable research indicates a shoulder angle of about (not necessarily exactly) 30 degrees results in the most consistent powder-burn. The 6.5x55's shoulder angle is a little more than 25 degrees.


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