I will give you a few examples of Accuracy with factory rifles and some customs with 700 actions. The first one is a Rem 700 SPS 7mm mag that I bedded in a High Tech stock and adjusted the trigger.
Here is the rifle.
Here is a 4 shot group off the bipod with a rear bag at 1000 yards with Retumbo and a 168 Berger Hunting VLD.
Same Rifle and load on a different day again off the bipod with a rear bag.
Factory Remington 700 BDL 375 H&H bedded in a HS stock. 600 yards off the bipod with a rear bag and 350gr SMK's.
I never had a Sendero in a 7mm Rem mag but I had a couple in a 7mm STW and other calibers so here are some targets from 7mm STW in a factory Sendero. This rifle was never bedded only the factory trigger was adjusted.
500 Yards off bipod with rear bag and 140gr Accubonds.
100 yards off bench 3 shots with Barnes 140 TSX's.
100 yards 160 Sierra HPBT 3 shots off the bench.
I have had over the years 10 Sendero's in a different calibers I have never had trouble getting them to shoot under 1/2 MOA.
Since we are on a 700 bashing trip by a few.
Custom LSR Rem trued 700 with Holland lug and factory bolt and trigger 7mm STW Berger 180's 3 shots off the bench at 100 yards.
Same rifle off Bipod at 710 yards off bipod with rear bag.
Again same rifle off bipod 1480 yards with a rear bag. A note I ran out of adjustment on the scope and had to hold over with a regular crosshair. First target only two shots hit the plate the 3rd went low.
Second group again holding over at 1480.
Rem 700 6-284 trued action ground factory lug with a hart barrel built by Jerry Simonson. That I bedded in the HS stock.
3 shots off bench 100 yards.
710 Yards Off bipod with a rear bag.
375 RUM on a Rem 700 SPS trued action, Factory bolt and trigger bedded in a High Tech Stock without a brake as of right now. Just Built by me and that is rounds 48, 49, and 50 down the tube. 3 shots 100 yards off bench.
All targets were shot at an altitude of 865ft above sea level.