I've had a couple of SakoA7 rifles over the last couple of years.
All were standard calibers, 22-250, 6.5x55 and 30-06.
None of the rifles were new, but all were in excellent condition.
All of them had LONG THROATS, which seems to be normal for the breed.
I'm a bit anal about getting the ogive of the bullet fairly close to the leade for best accuracy consistency.
I couldn't get close to the leade on any of the rifles, if I loaded the cartridges to fit/feed from the magazine well.
With the 6.5x55, the throat was so deep that I couldn't seat a 140 gr SST far enough out to touch the leade.
I tried several different OALs, measured on the ogives, with a nut gauge and calipers.
It didn't make any difference, that would be noticed in the real world, in the field.
The 22-250 groups didn't change more than 1/8 moa out to 300yds with any depth seat, once I established the load it liked.
The 6,5x55 was a bit fussier but still, not more dispersion than 1/2 moa out to 300yds.
The 30-06 was just like the 22-250.
All of these rifles shot slightly over moa or less, depending on how well I was shooting at the time. None of them were fussy about bullet weights or shape.
My step son has the 22-250 and it's one of those jewels that shoots factory ammo almost as well as handloads. The other two were fussy about factory ammo, but each had a couple of brands they liked.
The chambers in these rifles are on the low end of mean diameters. The throats are tight and this is conducive to good accuracy.
I'm willing to go so far as to say that you won't gain enough accuracy to worry about by trying to increase the OAL to the point you have to single load.
