Re: Rem. 700 Sendero Accuracy
You're getting a lot of good advice here, but no one has gone over the basics....
1. Check every screw and bolt on the rifle and make sure they are secure. If you have a torque screwdriver, torque your action screws to 65in. lbs.. Torque your scope bases to 25in. lbs. If your rings are steel, torque them to 25in. lbs too. If they are aluminum, torque them to 15-20in. lbs.
2. Insure your barrel is free floating. Starting at the muzzle, wrap a dollar bill around the barrel and run it up the barrel torward the action. It should move smoothly to within about 1" of the recoil lug. If it does not, if there's a point where it drags, or just flat out stops, take the action out of the stock and remove the obstruction - this can be accomplished with a file, sand paper or dremel tool. Then put your action back (torqued to 65in. lbs.) and check the float of your barrel again.
3. Check yor bore. Stick a bore light in both ends of the barrel. Put the light in the chamber end, make sure your throat looks clean and does not have any visible flaws. Look closely at the bore of your rifle - you're looking for flaws or inconsistancies. Next put the light in from the muzzle end and repeat the examination from this end. Also, be sure to examine the crown closely - make sure there are no flaws or inconsistancies.
4. Another way to check your crown....fire a few rounds and look at your crown. Does the exiting gas and particles leave a consistent/even pattern on the crown? it should.
5. Examine your shooting set-up. Although your sendero stock should be pretty stiff, be sure nothing is putting torque on your stock.
If your rifle passes all these tests you can attempt to work with this rifle - I would bed the action and recrown the barrel. The next alternative will be to rebarrel the rifle and bed the action.
I'm not gonna shoot here. I'm gonna shoot waaaaaaaay over there!