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robd Rookie Member
Joined: Dec 19, 2010 Posts: 10 Location: Depoe Bay, Oregon
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Posted: Mon Jan 03, 2011 9:53 pm Post subject: Remington 700 .30-06 question |
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I have been loading for my new to me Remington 700 .30-06 with Hornady SST 165gr, 57grs of IMR 4350 set to a COL of 3.250.
My shots at the range just aren’t good enough. They spread out more randomly than I would like; 3 to 4 inch groups at 100 yards.
So, I got one of Hornadys' COL gauges, set the dummy shell with the SST bullet and touched the lands 10 times. Averaged that and it came to 3.387.
Now minus .010 the OAL would be 3.377. I know the reloading manuals call for a Max COL of 3.340. But my understanding is to set the COL to YOUR rifle.
I made up a round (no charge or primer) and set the depth of the SST bullet to 3.377. It fits the magazine and cycles in and out of the chamber with no stress. The bullet is seating .420 into the throat of the shell and I understand that it should always go a least the depth of the dia. of the bullet. In this case .308.
With the round cycling ok I think I could increase the charge to around max. Somewhere in the neighborhood +/- 59 grs and still not experience over pressure.
Am I nuts or does this sound like it will be alright?
Thanks for any feedback.
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slimjim Super Member
Joined: May 16, 2009 Posts: 8314 Location: Fort Worth TX
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Posted: Mon Jan 03, 2011 10:15 pm Post subject: Re: Remington 700 .30-06 question |
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In developing your load, did you do OCW process - Optimum Charge Weight? Here is a post on this process.
www.huntingnut.com/ind...hlight=ocw
_________________ "To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt
"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein |
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slimjim Super Member
Joined: May 16, 2009 Posts: 8314 Location: Fort Worth TX
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Posted: Mon Jan 03, 2011 10:17 pm Post subject: Re: Remington 700 .30-06 question |
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Also, I've helped a friend improve the accuracy of his Rem 700.
www.huntingnut.com/ind...ht=rem+700
_________________ "To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt
"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein |
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robd Rookie Member
Joined: Dec 19, 2010 Posts: 10 Location: Depoe Bay, Oregon
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Posted: Mon Jan 03, 2011 10:44 pm Post subject: Re: Remington 700 .30-06 question |
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Thanks, I will study that OCW.
Does my COL of 3.377 sound right?
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Pumpkinslinger Super Member
Joined: Sep 22, 2007 Posts: 5001 Location: NC foothills
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Posted: Tue Jan 04, 2011 12:13 am Post subject: Re: Remington 700 .30-06 question |
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Try the OCW method and I'm betting you can find an accurate load. I'm almost convinced that with OCW you can find an accurate load with any reasonable OAL. If the OAL of 3.377" feeds well then give it a try.
_________________ Mike
"I ain't no better than anybody else, and there ain't nobody better than me!" Ma Kettle |
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Vince Site Admin
Joined: May 25, 2005 Posts: 15715 Location: Brisbane AUSTRALIA
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slimjim Super Member
Joined: May 16, 2009 Posts: 8314 Location: Fort Worth TX
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Posted: Tue Jan 04, 2011 8:31 am Post subject: Re: Remington 700 .30-06 question |
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robd wrote: |
Does my COL of 3.377 sound right? |
When developing a load, find your optimum powder weight first. Then adjust seating depth to fine tune for best accuracy. I usually start .025 off the lands for OCW then go .015 forward and aft. There should be no issue with you starting .010 off the lands and working back in .010 or .015 increments. I've seen some saying that they have found sweet spots .100 off the lands. This is not uncommon with Barnes all-copper bullets which need more of a jump before they engage the rifling. I've always found it beneficial to adjusting seating depth for optimization.
_________________ "To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt
"The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it." - Albert Einstein |
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robd Rookie Member
Joined: Dec 19, 2010 Posts: 10 Location: Depoe Bay, Oregon
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Posted: Tue Jan 04, 2011 9:52 am Post subject: Re: Remington 700 .30-06 question |
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Thank you Gentlemen. I am starting to study the OCW today and will begin from there with a moderate COL.
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Ominivision1 Super Member
Joined: Sep 20, 2010 Posts: 2984 Location: Iowa
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Posted: Tue Jan 04, 2011 2:34 pm Post subject: Re: Remington 700 .30-06 question |
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What i did when developing loads for my 700, I took an unprimed cartridge and lightly seated bullet and chambered it. When closing the bolt, it pushed the bullet to the max COL of my gun. From there, I was able to develop my loads.
_________________ Regards
Limitations are but boundaries created inside our minds. |
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fnuser Super Member
Joined: Dec 23, 2008 Posts: 914 Location: S.W. Missouri, U.S.A.
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Posted: Tue Jan 04, 2011 6:13 pm Post subject: Re: Remington 700 .30-06 question |
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as long as it 1.)fits in the mag well and 2.)feeds and 3.)stays off the lands thats your deminsional constraints. now just start adjusting your charges with your available propellant as per what the ocw dictates. usually if you have the luxury of shooting over a chronograph a particular velocity will be found most effective and duplicating that velocity w another propellant is a good place to start if you have to switch powders.
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robd Rookie Member
Joined: Dec 19, 2010 Posts: 10 Location: Depoe Bay, Oregon
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Posted: Tue Jan 04, 2011 8:11 pm Post subject: Re: Remington 700 .30-06 question |
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Thanks folks.
Yes, this is a new to me gun and I was shooting factory COL loads.
I went out today after loading a few rounds each at a selected depth setting for 3 rounds, 3 sets. "3.375, 3.365, 3.355" Found a sweet spot and will now start working on a good powder load by using the OCW method.
At least now I am on paper with a decent grouping. Something to work with.
The sweet spot was 57 grs of IMR 430 seated at 3.375.
Thank you for all your feedback.
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chambered221 Super Member
Joined: Aug 17, 2007 Posts: 3455 Location: Lost for good !!!
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Posted: Wed Jan 05, 2011 7:12 pm Post subject: Re: Remington 700 .30-06 question |
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Hornady 165gr SST (one of the shorter 165's) is 1.125 in length, with a case trim length of 2.484 you would have .359 of bullet in the case with an OAL of 3.250 and .234 of bullet in the case with an OAL of 3.375
I wouldn't worry too much about how much bullet your putting in the case unless you run into consistency issues with velocity.
OCW is a great load development tool.......if you read the links Slim posted and follow the directions I'm sure you'll end up a happy hunter nut !!!
_________________ Ask as many people needed, sooner or later your question will be answered the way you want it answered !!!
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