Last sunday, I took the BSA 12/15 out to the indoor range, 75m (that's 82 yds) for some practice. I shot some SK long range match, and produced following target:
Not too sure about the 7 as I didn't call it, might be a bad cartridge, could be me, but the rest is a smidgen over 1 MOA, I'm pretty happy with that when shooting the old match rifle with double-point sling, from the elbows. This is with the standard peep sights, BTW.