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Remington .30-06 Thanks!!
Discussion regarding the reloading of ammunition and tuning of loads for accuracy
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robd
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Location: Depoe Bay, Oregon

PostPosted: Thu Jan 06, 2011 6:07 pm    Post subject: Remington .30-06 Thanks!! Reply with quote

First I want to say thank you to the folks that helped me in my last post.
I have determined my OCW load and am very happy with it. Right in the middle range so I need not worry about over pressure.
I am working with a COL of 3.365, (3.375 was not good and 3.355 not good either) in my Remington .30-06 and will now fine tune that a couple of thousands at a time towards the + side.

Ok, next question. I get to the range, cold and clean barrel. First two go a little left, the next two right on the mark.
I think no biggie. I let the rifle cool, do not clean it. Fire next set and the first two go to the left a little, next two right on the mark. This goes on for another 4 or 5 sets.
Ideas? Fine tuning my COL?
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PaulS
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Location: South-Eastern Washington - the State

PostPosted: Thu Jan 06, 2011 6:20 pm    Post subject: Re: Remington .30-06 Thanks!! Reply with quote

If you are using the gun for hunting sight it in so the first shot is dead on - that is the only one that counts.

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Paul
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Speer, Lyman, Hodgdon, Sierra, and Hornady = reliable loading data
So and So's pages on the internet = NOT reliable loading data
Always check data against manuals
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robd
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PostPosted: Thu Jan 06, 2011 7:02 pm    Post subject: Re: Remington .30-06 Thanks!! Reply with quote

Thanks, I realize in hunting the first shoot is the one that counts. I am just the kind of guy that likes to know how things work and why. Lord knows I am no rocket scientist, but I can drive my pickup pretty fast.
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Pumpkinslinger
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PostPosted: Thu Jan 06, 2011 7:41 pm    Post subject: Re: Remington .30-06 Thanks!! Reply with quote

I'd suspect a little warping as the barrel heats. How far apart are the pairs?

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"I ain't no better than anybody else, and there ain't nobody better than me!" Ma Kettle
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chambered221
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PostPosted: Thu Jan 06, 2011 7:53 pm    Post subject: Re: Remington .30-06 Thanks!! Reply with quote

Could be a bedding issue or a pressure point somewhere on the barrel. Kind of sounds like once you generate some heat the barrel isn't going back to it's cold bore state.
If you want to do some experimenting shoot a series of cold bore shots (about 10) and see what happens. Then shoot another series of shots without letting it cool down but don't overheat it either.

Depending on your definition of "a little left" it may or may not be worth attempting to fix.

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robd
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PostPosted: Thu Jan 06, 2011 8:42 pm    Post subject: Re: Remington .30-06 Thanks!! Reply with quote

True, it isn't a huge amount. The first pair that goes to the left is about an inch to the left. I will check the stock to see if the barrel valley has a small hump in it.
Thanks guys

Update: I went out to the shop and did find a slight high spot in the barrel valley. 20 minutes of sanding the vally and I can fold a dollar bill three times and slide it to within 2" of the recoil lug. from there to the recoli lug is bedded.
The sad thing is paid a local "Gunsmith" to free float the barrel and bed the recoil area for me. I will be sure to check his work better next time. He is working on pillar bedding and free floating a new stock I am putting on a .223.

Anyway. You guys are great! Thanks
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slimjim
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Joined: May 16, 2009
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Location: Fort Worth TX

PostPosted: Thu Jan 06, 2011 9:54 pm    Post subject: Re: Remington .30-06 Thanks!! Reply with quote

Pumpkinslinger wrote:
How far apart are the pairs?

I find on my sporter-type barrels that after two shots I can see the affects of heat as the groups open up. POI, though, isn't changing for me. I now shoot pairs and wait for the barrel to be cool to the touch.

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Vince
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PostPosted: Thu Jan 06, 2011 10:26 pm    Post subject: Re: Remington .30-06 Thanks!! Reply with quote

I always fire a couple of "warmers" Rob, before I fire a group. That way all rounds fired are coming from a barrel that is as close to the same temperature as possible.

However, when zeroing, I do as Paul says...first shot, cool, adjust, second shot, cool, adjust etc.

Cheers, Vince

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slimjim
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Location: Fort Worth TX

PostPosted: Fri Jan 07, 2011 6:43 am    Post subject: Re: Remington .30-06 Thanks!! Reply with quote

My rilfes don't print to the same POI with a clean barrel as with a fouled barrel. Therefore, I always fire a fouler before doing any sight adjustments and, if I'm expecting a long range shot opportunity, I hunt with a fouled barrel.

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"To anger a conservative, lie to him. To anger a liberal, tell him the truth." - Theodore Roosevelt

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