That comes out to a 12" can, I guess your cans are smaller than mine. My reference point is a 5 gallon jerry can. My eye isnt calibrated well enough to tell exact group sizes at 800, but its not hard to see well in 7000'+ elev dry air. It was apparent that I could consistently hit the log at that range. The original Remington 4 groove 1903A3 I had back then did noticeably better on the same target location (that particular gun looked unfired when I bought it). I shot 190 gr HPBT loads, they did around 1 1/4" @ 100 5 shot groups when checking zeros. It also shot better than the M1 with the PMC M2 ball.
That M1 rifle would generally do around 3 1/2" @ 100 off a decent rest with ammo it liked. The ammo I was shooting most back then was PMC M2 ball, it shot pretty well in a scoped 1903 sporter, it normally did about 7/8" for 3, or 1 1/2" for 5 in the sporter when checking scope zero. Most US surplus ball shot around 2 1/2-3" in that gun (1903 sporter). No idea what the difference was in ammo quality, but it seemed to hold up over the several years I was buying it in Flag. Their 5.56 ball seemed to do a hair under 1" @ 100 for 3 when checking scope zero in a Colt SP1. It was good enough to consistently hit prairie dogs 6-7/10 @ 300 yards off the hood of the truck if you didnt get the barrel hot. This I think was in the first few years of them selling ammo commercially. I havent bought or shot any of their stuff since the mid or late 80s, so no idea what it does now. I still have some of the '06 and 5.56, Ill dig some out and see if it still shoots good. If @Outpost75 wants to test it in something accurate Ill send him a box or two of each.