REM 700 Sendero 300 WM Upgrades?

[Devildawg2531]

I get about 1 MOA at 100yds with my 300WM with good factory feed (don't reload yet). Is the goal of cutting this in 1/2 reasonable - what kind of accuracy are most getting? What are the biggest "cost effective" upgrades that can be made. Mine is all stock except for Leupy scope.

thx

[Devildawg2531]

appreciate any feedback on this

[ICANHITHIMMAN]

First off welcome

Your rifle is shooting great right off the bat. How long are you allowing your barrel to cool between shots? 10 min between shots is a good start. Also when it comes to load testing for long range 100 yards really tells you nothing your bullet has not stabilized yet. A good benchmark for testing is 200 yards and beyond.

Hand loading is the best way to get the kind of accuracy you are looking for but for the mean time try a few different loadings. Black hills and federal gold metal match are the two ammo considerations for factory in my opinion.

Next you should check the action screws for torque. Your rifle has an aluminum bedding block so your action screws should be set to 65 inch pounds. Check your base screws and ring screws as well. Look up manufactures recommended torque specs for them. Always lap your scope rings if you can to eliminate and torque on your scope tube.

Now for upgrades, you’re off to a great start so I cant say you really need anything other than to start hand loading. A nice tuned trigger can cut groups in half sometimes. Skim bedding your action to remove any play from the action is beneficial. Lapping the bolt lugs to get 85% contact will help as well. I have a muzzle brake on my 300 win mag you don’t need it but it sure cuts down on the recoil. Having the muzzle re crowned is nice.

If you do get into the hand loading you may find your self drifting to heavy bullets. If this happens they most often need to be loaded long and thus will not fin in the factory mag box. This is an easy fix with the addition of a Wyatt’s extended mag box.

All this is nice but like I said you’re off to a great start.

Oh another little tip a scope level can cut your groups down a bit to.

Jon

[Devildawg2531]

Jon - WOW - that is great info. I haven't thought about a muzzle brake but I'll be honest for big "tough" Marine after about 10 shots of this I've had all the fun I want with the 300 Mag. I assume the brake would require threading the barrel. What brand is recommended and any recommendations on a good gun smith in north GA?

Thanks

[ICANHITHIMMAN]

Jon - WOW - that is great info. I haven't thought about a muzzle brake but I'll be honest for big "tough" Marine after about 10 shots of this I've had all the fun I want with the 300 Mag. I assume the brake would require threading the barrel. What brand is recommended and any recommendations on a good gun smith in north GA?

Thanks

Well I can shoot my rifle all day kicks like a 243. I have 2 different muzzle brakes right now. On my 300 win mag I have a clam shell style brake from Pete Lincoln its very effective but heavy has more of a military look. On my 300 WSM I have one of Jim See Muscle brakes also very effective and contoured to my barrel.

In the past I had one of Kirby Allen’s APS(MT) painkiller brakes on my 260 rem and it looked very sleek and I would buy another. Nathan Dagley of SSG gun smithing(MT) makes a very nice brake and to does Shawn Charlock of Defensive EDGE gun smithing(ID).

I have all my work done by a guy in PA named Kevin Cram at Montour county rifles. He has never treated me wrong and has some of the shortest turn around times I have seen. I have used a few other smiths but Kevin really impressed me with his business ethic and turn around times. I don’t know anybody down your way. Most of the smiths I deal with center around long range hunting rifles.

The best thing you can do is pick a smith and talk over your ideas with him Kevin will awnser his phone. Just a little advice pick a few smiths their prices are all around the same ask about turn around times that will be your biggest hang up. I once waited 26 months for 2 rifles and by the time I got them my interest had changed and they went right on the choping block.

Jon

Oh ya it will have to be threeded yes. Which involves pulling your barrel.

[Deputy25]

The Shilen trigger in my M700 .300 Win mag is the best upgrade that my rifle has. I'd like to try a brake, but my barrel has a lot of miles on it, so I may try that when I re-barrel the old 700.

[ICANHITHIMMAN]

The Shilen trigger in my M700 .300 Win mag is the best upgrade that my rifle has. I'd like to try a brake, but my barrel has a lot of miles on it, so I may try that when I re-barrel the old 700.

I did have a Shilen trigger on my McMillan M98 rifle in my opnion it was not any better than the tunned triggers from some of the smiths I mentioned. In the future unless I bulid on another custom action factory tuned rem triggers are more than adiquite and cost alot less.
But you cant bet a good triggr!

[Littlelebowski]

Experiment with ammunition selection.

[Artos]

...as mentioned, skim bedding is the first thing to do.

I have seen many 1moa senderos & vssf drop to 1/2" just with this.

[Watrdawg]

I sent a regular Rem 700 Stainless 300WM to Hill Country Rifles for work. They rebarrled it with a Lilja barrel and contoured it in between Rem's Standard magnum countour and a heavy barrel contour. They blue printed the action, lapped the lugs, cleaned up the trigger and adjusted to break at 2 1/2 pds. I also had my barrel threaded for a muzzlebrake and they installed one of theirs that is the same contour as the barrell. Recoil is basically the same as a .243. They did not lap my scope rings because they said that the Warne rings I have are vertical clamping rings with weaver bases there will not be any torquing of the scope body within the rings. They lap all scope rings where the rings are horizontal such as standard Redfield/Leupold style rings. I also had them bed the rifle in a HS Precision stock. They guarantee 1/2" groups at a 100yds with factory ammo. The ammo they used was Hornady 180gr SP factory ammo. Came in at .46" I'm shooting Fed 165gr TTSX ammunition and can keep my 5 shot groups around .5" to .75" at 100yds.

Over all they did very good work and the turn around time was about 8 weeks. This was right after the end of hunting season so they were not swamped with rifles.