I am pretty sure that Winchester used one action size, overall footprint, until the late 1980's. That said the 243/308/220S/257R etc had magazine pacers and different length bolt stops than the "standard and Win Mag/7mm Rem Mag length boxes/stops. The H&H's had larger magwell openings and relieved receiver openings.
The various size actions with different outside (footprint) happened later, late 1980's.
The only 6.5-55 Win 70 I ever saw in the flesh was a Featherweight from the late 70's or early 80's and was the standard length action with magazine spacers.
ETA: I may have that 6.5 - 55 confused with a 257 Roberts. That 6.5 ,ay have been a later production. Either way I never saw many post 64 6.5-55 or 257's.
Last edited by sbrmike; 09/04/15.
