The Weatherby Vanguard Series 2 has a Sub-MOA guarantee. My synthetic 30-06 has never shot bigger than 1" when I do my job. I can get .5 groups with the Nosler Trophy Grade 165gr Accubonds and I get .6 with the 165gr Partitions loaded by Federal.
My ruger m77 shoots better than an inch with just about any ammo I have given it. Don't know about factory ammo, I haven't bought any of that stuff for a long time.
My Remington 700 classic in 25-06. Consistent .350 to .400 inch groups with 110 grain Nosler Accubonds or 117 grain Sierras. Never have thrown factory rounds through any of my rifles but I'd imagine 25-06 would still shoot.
Ruger M77 in 270 WSM. Shot through multiple factory loads until I found one it liked and settled on Federal Premium with 130 grain Barnes bullets. Unfortunately, it's dang near impossible to find any factory ammo.
My trusty Win Model 70(not pre64) but old. 300win mag. Shoots under an inch at 100. Shot a 7", 5 shot group at 485 this Oct in CO. In the following days, my son and I smoked two nice Mulies with it at over 250yds each. I haven't touched the scope in ten years. Lightned the stock trigger to three pounds. Factory Winchester Super X ammo always. I have alot of newer, prettier guns, but the 70 is my baby. Never leave home without it.
The first deer rifle I bought shoot sub-moa with Remington ammo. It's a Savage Model 110 30-06 that I bought new when I was 11 years old. I think I paid $400. Nothing fancy but it's a shooter. It out shoots my T/C prohunter and Weatherby Sub-moa (both 30-06).
I have an old model Weatherby Vanguard in .257 Weatherby that will shoot under .5 moa all day long with 120 gr partitions and 115 gr tsx's. Absolutely love that rifle.
Pretty much all of my factory rifles shoot sub moa groups. I wouldn't keep one that didn't. My 30-30, 45-70 and old '06 shoot as well as I can see with open sights. The worst shooting scoped gun I have is a Rem 700 Classic 220 Swift. No heavey barrel and a ton of rounds through it including a time or two that it got hot to the touch. A new tube should bring it back though. "Only accurate rifles are interesting"
I have an old Winchester .270 that will put 3 shots touching at a hundred with Hornady ammo with an old straight 6 power Redfield. The light Mag ammo was king, but they don't make it anymore.... Superformance is ok though.
I love the gun! Always hits so long as I am under control.....
Not a popular choice but I really like my TC Icon chamber in TC 30, that I bought before Thompason Center was sold. I have shot sub 1 inch groups at 200 and sub 3 inch groups at 400. It is toped with a lupy vari x 3 b and c though.
Weighed the individual rounds from two boxes on Remington 150gr AccuTip for my 7 mag. Grouped the rounds by weight and they would shoot .6-.7 @200 yds.
My Browning A-bolt .270 win shoots quarter size groups at 200 yards with 130 grain TSX factory ammo. Remington Core lokts open up to about 2" at 200 yards.