This seems to work for us.
Three different guns in three different shooters.
shooter number 1 (my son age 50)
shooter number 2 ( my grandson age 21, young eyes)
shooter number 3 (myself age 75)
all 3 rifles are Bergara Precision Elite with the Orias chassis In the 6.5 Creedmoor
Rifle number 1 shoots with a Razor HD AMG 6-24x50 FFP, Hellfire self timing muzzle brake
Rifle number 2 shoots with a Arkin SH-4 Gen 11 6-24x50 FFP,Hellfire self timing muzzle brake
Rifle number 3 shoots with a Arkin SH-4 Gen 11 6-24x50 FFP, Hellfire Match self timing muzzle brake. While waiting for my EP5 5-25x56 FFP VPR
All 3 rifle shoot off a Harris bipod BRS 6-9
After shooting 1000 yard range with 8 to 12 mile mph wind from the left.
Shooter number 1 placed 18 rounds out of 20 in a 9 inch circle.
Shooter number 2 shot 1.70 inch group, young eyes
Shooter number 3 shoots 4-5 in groups
Bullets…Hornaday 140gn ELD-M
Cases…Lapua brass I prefer small primer but large primer works just as well
Powder… 42.2 gn of Shooter's World 4350
Ballistics…2477 fps Extreme spread=6, SD=2.6 (not the fastest but very consistent).
Rcbs Matchmaster - full length-bushing set
Black Nitride Expander Mandrel .262
Rcbs Matchmaster powder dispenser
Stainless steel media with Tumblr
Annealer every time, I use an Annealeez
Measuring powder is extremely important. I find neck tension is just as important if not more so.