zrex, you aren't getting the point here buddy. You keep saying "the most accurate cartridge"! News flash, there's no such animal as an accurate cartridge!!! And again you are incorrect as far as the 6mmPPC holding the record. That would be an HCR rifle chambered in...wait for it...wait for it....a .375 Cheytac! with the record distance being 4210 yards! Details

Date: November 22, 2015
Location: FTW Ranch, Barksdale TX
Rifle: HCR Carry Weight 375 CheyTac
Action: Stiller CheyTac 1.450”
Barrel: Benchmark 8 groove, 1:11.5” twist, 27”, .750”@muzzle
Muzzle Brake: Benchmark Miller Prone
Trigger: Jewell with front safety set 2.0 pounds
Stock: McMillan A3/5 customized to fit action, bottom metal, with custom adjustable comb
Trigger Guard: Bear Custom DBM
Metal Finish: Two-tone Black, Tungsten Gray Cerakote
Scope: Nightforce Beast H59 reticle
Mounts: Custom 230 MOA rail, 20 MOA Nightforce Direct Mount
Unscoped weight: 12.5 pounds
Weight with scope and mounts: 15.5 pounds

Ballistic Data and Environmentals:
Total Elevation: 96.5 MILS (4.5 MILS in the reticle)
Windage: 2.3 MILS Right
Temp: 58 Degrees
Humidity: 50%
Elevation: 2000 ft
Station Pressure: 28.00 Hg.

And the best ever recorded 5 shot group ON TARGET (50 score 5x) with a 1.403" group in light gun class wasnt the PPC or small bore at ALL!!! It was recorded in 2007 by Tom Sarver with a wildcat cartridge. A .338 Lapua cartridge necked down to 30 cal and shortened a mite. Bullets were 240gr Sierra Match Kings.

Best 10 shot group wasn't shot with the 6PPC either! That goes to Jim Richards in 2014, I think, shooting a 6mm Dasher. 2.6872" all in the 8 ring.