Scopes and parallax

[JonC]

Hmmm, so it would appear that we would be best off going for a good quality, fixed, moderate magnification scope. Maybe a x 6 or x 10, as we shoot mainly at 300 and 600 mards?

From my experience, even a high mag scope is fine at anything over 100 yards, the 25 yards bit is where you will struggle. I do not think my Leopold focuses down that low, even on minimum mag, leg alone worry about parallax.