I have a stock Winchester .308 National Match rifle. Long action, long rear bridge, cut for charger loading, original Redfield sights, made ca 1970, excellent end to end. Last time I shot it for a basic zero at Connaught at 300m, first was a 4, corrected, next was a 5, corrected, last 3 were Vs. The Redfield Mk. VIII rear sight leaves a bit to be desired, though. Eighth minute clicks, plain scale, no Vernier. You sure have to enjoy counting clicks to use it.