All five-shit groups, all shot at 30 yards
.30-06, using the .32-caliber semi-wadcutter, unsized, over 3.2 grains Bullseye, overall length 2.9"(seated to between the crimp and lube grooves)
.30-06, a 150-grain flatpoint intended for .30-30, 4.0 grains Bullseye, overall 2.96"(crimp groove)
.30-06, using a Lee 160-grain spitzer originally designed for 7.62x39, OAL 3.176(very consistently by my caliber, this was seated in the first lube groove below the crimp groove)
.303 British, the SWC sized .311, 3.2 of Bullseye, OAL 2.628"
.303, same bullet and load except the bullet was as-cast, not sized(ignore the .311 on the target)
The SWC is a plain-base bullet; the others are all intended to use a gas check, but it was left off. In .30-06, from the way the bolt handle felt when locking, I think the SWC was engaging the rifling, the others were not.
The .30-06 had the rear sight set for 500 yards, which gives you an idea of just how low the velocity of these loads is. The 160-grain and 150- grain bullets gave a touch of recoil, just enough to know it's there; the SWC, the rifle shifted a touch and that's it.
The .303 is a #4Mk1 with the early ladder rear sight. The sized-bullet group was shot with the 300-yard battlesight. Aiming point on all was the bottom edge of the outer ring; that puts that group hitting 4.5" below point of aim. For the second group I flipped up the ladder and set it for 500, which put it only 2.5" below point of aim. Would probably take the 600 or 700-yard setting to put them on POA.