I have an old (1950's or so) Sako Finnbear in .270Win. Real low serial number sporting Nikon glass.
This rifle does something I've never seen a rifle do before...it needs 'fouling shots' before it'll group. Basically, I clean the bore very well; no powder fouling and all copper fouling out. The rifle seems to like Winchester Supreme ammo (170gr), but I need to put about 15 shots thru the barrel before the thing will group. The groups start out at about 2"-3". AFter the 15 shots, I'm shootin' at about .75-1.25 inches. That lasts for about 10-12 shots, after which the groups start to open up again. Is this thing a dog ? A few years ago I had a Finnbear Deluxe with a Zeiss scope and could not get that "tomato stick" to print better'n 1.5"... I'm kind'a hatin' the Sako's and doubt I'll ever buy another one....