thanks for your help.
so your saying a variable 10x to 14X power is good enough. and i dont need a variable up to 32X power scope to see my 7 inch round target @600 yds.
the black diamond scope is also a 30mm tube, is 8x to 32x veriable power. I still am pretty sure im going to go this route.
whats good about the 30mm tube vs. 1 inch tubes???