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5R mil-spec

 
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  #8  
Old 12-06-2012, 10:35 PM
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Join Date: Jun 2012
Location: Pagosa Srpings,CO
Posts: 22
Re: 5R mil-spec

twoftagl,
Welcome to CO. My 308 is in a sendero, and after a little tweaking, I can brag on it. Thinking of a 300 wm 5r for a couple reasons, but I can almost guarantee to make your 5r shoot sub moa with pet load, and am looking forward to doing that with one of my own soon.


Aim Small Hit Small
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  #9  
Old 12-07-2012, 12:15 AM
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Join Date: Jun 2011
Posts: 118
Re: 5R mil-spec

My 2 cents. I have a rem 700 300 win mag with the 26" sen barrel and it likes the 190 smk's. those are being pushed with 84gr of WC-872 @ 3090 fps. Fed Cases trimmed to 2.610, OAL of 3.500, with a short jump to the lands. Right now I'm getting .30" groups at 100 yrds and just 2 weeks ago worked my way out to 1000 yrds and was only 1.5 high and 1" to the right. So ya I'm very pleased. Something for you to try.
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  #10  
Old 12-07-2012, 06:12 PM
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Join Date: Apr 2012
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Re: 5R mil-spec

Quote:
Originally Posted by cohunter1 View Post
twoftagl,
Thinking of a 300 wm 5r for a couple reasons, but I can almost guarantee to make your 5r shoot sub moa with pet load, and am looking forward to doing that with one of my own soon.
I'm intrigued at this baited hook and must bite....oh please do tell.
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  #11  
Old 12-07-2012, 07:59 PM
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Join Date: Jun 2012
Location: Pagosa Srpings,CO
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Re: 5R mil-spec

My shooting partner and I haven't met a sendero we can't make shoot yet. The secret is in the action and barrel being properly torqued to the stock. We are currently trying to prove the theory that we can make a sendero and or 5r mil spec shoot any suitable load. I'm not a physicist, but my theory, is that you have to match the load to the harmonics and resonance of the barrel through tension. It sounds like a truck load of BS, but it has been working so far.


Aim Small Hit Small
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  #12  
Old 12-08-2012, 01:56 AM
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Join Date: Apr 2009
Posts: 927
Re: 5R mil-spec

Quote:
Originally Posted by cohunter1 View Post
My shooting partner and I haven't met a sendero we can't make shoot yet. The secret is in the action and barrel being properly torqued to the stock. We are currently trying to prove the theory that we can make a sendero and or 5r mil spec shoot any suitable load. I'm not a physicist, but my theory, is that you have to match the load to the harmonics and resonance of the barrel through tension. It sounds like a truck load of BS, but it has been working so far.


Aim Small Hit Small
Your theory isn't far off at all. After some experimentation, I found my Rem actions shoot best right around 35-40 in/lbs.

Back to the topic. I have a 300 Win 5R and shoot nothing but 215s and 230s. The 1/10 works great. And the rumors are true. With good handloads the 5Rs are 1/2 MOA rifles. With great handloads they do even better.
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  #13  
Old 12-08-2012, 07:55 AM
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Join Date: Apr 2012
Posts: 59
Re: 5R mil-spec

That doesn't sound like BS....afterall, we all know how important the relationship is of the stock and the action mating..... and shoot, them screws is what what holds em together.

So I'm supposin the best way to work it is: pick ANY load that shoots decent, do a group or two at each torque setting within acceptable torque values, say 30 - 60 or 65 if it's pillar bedded, and see which one shoots better. That close to what y'all been doin?

After you find the smallest groups, now do a load workup? I'm headed out today to shoot that 4831sc and I think I just might have to adjust my plan a little.....hmmmmmmm.....

Infact, the more I think about it, the more this makes sense. I've always had my action screws really snug. Right now they're the tightest they've ever been at 65 by recommendation of the smith that bedded it, the Tq wrench mfg, and a couple other sources. This might be why I can't seem to get decidedly better than a MOA. What increments do you find make a difference? 5in/lb increments about as close as you go? Thanks for putting that out there!



Chris

P.S. sorry for getting too far off your topic, didn't intend to hijack :-(

Last edited by twoftagl; 12-08-2012 at 07:57 AM. Reason: Thread got off-topic
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  #14  
Old 12-08-2012, 11:08 PM
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Join Date: Jun 2012
Location: Pagosa Srpings,CO
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Re: 5R mil-spec

twoftagl,

My ? about twist rate and stability has been satisfied, so I am happy to tell anyone who will listen about torqueing your rifle. My buddy and I have gone to custom length Bell & Carlson stocks (14.25") on our senderos. A friend of ours is part owner in greybull precision, and I am in love with their stock design built by B&C. Anyway, after I decide on respectable load group, start at 50 in lb on both front and rear screws. Shoot 3-5 shots, and if bigger than 1 moa, go to 51 in lb on front screw and so on by 1 in lb on front screw until you are shooting one ragged hole groups. I don't think it makes a huge difference where you start ( 50, 60, 65 in lbs) as long as you start equally on both screws, and increase front screw from there. At some point in this process, your groups will open back up, and you will have to go back down in poundage until your back to the tightest possible groups. Like I mentioned earlier I think you can make any suitable load shoot well by following this process. And so far , it has been repeatable, if you have to remove the stock for whatever reason. Hope you have as good of luck as I have doing this.


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