Long Range Hunting Online Magazine

Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels & Ballistics

Rifles, Bullets, Barrels & Ballistics Applied Ballistics


Rem. 700 Sendero Accuracy

LinkBack Thread Tools Display Modes
Unread 06-30-2009, 08:23 PM
Junior Member
Join Date: May 2009
Location: New Zealand
Posts: 10
Re: Rem. 700 Sendero Accuracy

Geat Advise Guy's..

I'd like to add my two cents worth.
I bought a new 7mmRem Mag Sendero a few months ago and I also had
major problems with accuracy.
I put a box of Hornady factory ammo through it to run the barrel in and it
sprayed 2-3in groups at 100yds off a proper bench rest.

So I took it back to the shop and had the barrel inspected..........and
sure enough the barrel was not crowned properly.
It was recrowned by a local gunsmith who lightened the trigger as well.

It's shooting much better now .5-.6'' at 100yds with Nosler virin brass
73.0gns ADI2225 and Sierra 168MK.

Can't wait to try the next round of loads with fireformed cases.

Reply With Quote

Unread 08-04-2009, 10:22 PM
Bronze Member
Join Date: Jun 2009
Posts: 35
Re: Rem. 700 Sendero Accuracy

I'm new to the forum and I feel like I'm a little late for this party. If you're still having problems try this. I too shoot a 7mag sendero and mine is a tack driver which took a little extra work duing the break in process. I used J&B polishing compound between each round in the break in. This removed all the microscopic burrs in the barrel. Also remember that the twist rate of your barrel is 1 in 9.25 and will not shoot the light bullets in the 140 weight or lighter. My rifle likes the 150 ballistic tips and 162 A-max and will shoot these in the .2 and .3 at 100yds with no problems. Someone mention the torque screws on the stock at 65 in lbs and Remington says it should be only 45 in lbs. If you're going to shoot manufactured rounds, try Rem 150gr Accu-tip. My rifle will shoot these in the .6 to.7's at 200yds. Hornadys rounds will not shoot well regardless of the weight in my rifle. Hornady actually makes the Accu-tip for Remington. I reload the Nosler 150 straight out the manual using IMR7828 and the Hornady 162A-max with H1000 and both rounds with shoot 2 to 3 inch groups at 650yds. The key is back to the J&B polishing compound which is just lapping the barrel. I bet this will solve your problem.

Reply With Quote
Unread 08-04-2009, 11:56 PM
Silver Member
Join Date: May 2003
Location: AK
Posts: 157
Re: Rem. 700 Sendero Accuracy

A poor crown is certainly detrimental.

What I have seen make the biggest difference in any rifle is the overall length of the chamber. A shorter oal chamber will minimize brass flow, give more loadings and improve accuracy.

If you have access to an RCBS Precision Mic or Wilson case gauge, measure unfired brass noting the reading. Measure it again after you load it if you are a handloader. Then fire the cartridge and measure your fired case. Might want to select 3 or 4 that are the same in unfired measurement and see how they gauge after being fired.

RCBS Precision Mic is not made to perfectly mimic a SAAMI chamber, so it is only a guide. Yet, if you see the overall length of your cases before and after firing you can get an idea of the dimension of your chamber.

Most Remington chambers are a few thousandths on the longish side. You can have your gunsmith set the barrel forward to give you a .001 over minimum chamber and see your groups tighten up remarkably.

H-S Precision stocks have been traditionally torqued to 65inch pounds per H-S instruction. Might have better luck if you vary the torque from 40-50ip and try differing the values per each action screw.

Barrel might also be torqued on the receiver like it was done with a ten ton hydraulic press. If your barrel is being set forward, have the smith lap the face of your receiver and recoil lug where it bears against the receiver shoulder and rear of the recoil lug cut out. H-S Precision stocks are excellent, in my experience, but you could also lightly skim-bed your receiver to the action block.

Then there is ammunition. Unless you are handloading you won't even begin to get the control over accuracy you are seeking. Most Remington 700s will need a trigger job. About 2.5lbs trigger pull is excellent. Other receiver and bolt truing with lug lapping is not as critical as a minimum oal chamber and precision handloads. May as well save the action job for later as you may find you don't need it.

I have used J-B bore paste to remove fouling, but if you think your bore is rough, David Tubb's firelapping bullets are probably the better way to go. J-B is not meant to be a lapping compound. Ed Shilen is quoted as saying he's seen more barrels ruined from over-cleaning than anything else.
Reply With Quote
Unread 08-05-2009, 12:07 AM
Junior Member
Join Date: May 2009
Location: New Zealand
Posts: 10
Re: Rem. 700 Sendero Accuracy

Thanks Guys

I'll keep you posted.

Reply With Quote
Unread 08-05-2009, 09:06 AM
Platinum Member
Join Date: Jan 2007
Location: MS
Posts: 1,652
Re: Rem. 700 Sendero Accuracy

Grab the stock very close to the fore end so that your finger tips touch both the barrel and the stock, then loosen and tighten your front action screw. If there is movement you probably found your problem, bedding.
I admit that I know just enough to be dangerous.....but dangerous at ever extending distances.
Reply With Quote
Unread 08-05-2009, 12:27 PM
Bronze Member
Join Date: Feb 2009
Posts: 32
Re: Rem. 700 Sendero Accuracy

Maybe you should let someone else shoot it a few times.
My sendero shot sub moa groups with the first rounds thur the barrel.
Reply With Quote
Unread 05-23-2010, 07:45 AM
Silver Member
Join Date: Feb 2010
Posts: 182
Re: Rem. 700 Sendero Accuracy

It might be to late to reply, but I had the same exact problem you were having. I took the gun to it bedded and trigger work, it helped about 50 percent with accuracy. I just bought this gun about 4 months ago so have shot close to 100 rds. Towards the 100 rd. mark my groups got better and better. I shoot 210 bergers with h1000. I am shooting a three shot group all in the same hole at 100 yards. I would definately get it bedded and and shoot more.
Reply With Quote


Thread Tools
Display Modes

Similar Threads for: Rem. 700 Sendero Accuracy
Thread Thread Starter Forum Replies Last Post
help 7mm RUM sendero no accuracy shedhead Rifles, Bullets, Barrels & Ballistics 18 08-06-2015 04:13 PM
Rem 40 X accuracy vs Sendero sendero7 Rifles, Bullets, Barrels & Ballistics 3 08-25-2009 10:51 AM
accuracy of a stock sendero 7mm RUM ??? TimK9 Long Range Scopes and Other Optics 3 04-04-2009 11:56 PM
Remington 700 Sendero ( out of box accuracy good or bad) longrangefreek Long Range Hunting & Shooting 10 04-10-2008 05:20 PM
Remington Sendero SF 2 Accuracy? pdbsa Long Range Hunting & Shooting 3 12-18-2007 11:32 AM

All times are GMT -5. The time now is 07:28 AM.

Powered by vBulletin ©2000 - 2016, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2015 Long Range Hunting, LLC