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1903A3 reloading trouble

 
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  #1  
Old 06-29-2014, 04:45 PM
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Join Date: Apr 2014
Location: Northern California
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1903A3 reloading trouble

Have a question and hope someone has the knowledge to help.

I am trying to reload some 30-06 rounds for my 1903A3 sportster.
I have grouped matching head stamps, full lengthen sized all brass, trimmed to within a couple thousands of each other and seated 168gr boat tail h.p. hornadays to the book and the bolt will not close. The over all length is .010 more than a factory Winchester load which chambers fine every time. The rifle has never had a problem with any factory loads I have asked it to shoot.

If I seat the bullet so the case is the same overall length as the factory load, it will be to deep. Is this a big concern? Is it a chamber problem? All brass is within spec per hornaday handbook vol 2.

Any help is greatly appreciated.

Thanks in advance.
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  #2  
Old 06-29-2014, 04:56 PM
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Join Date: Jul 2012
Location: North Central Valley California
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Re: 1903A3 reloading trouble

[QUOTE]I have grouped matching head stamps, full lengthen sized all brass, trimmed to within a couple thousands of each other and seated 168gr boat tail h.p. hornadays to the book and the bolt will not close. The over all length is .010 more than a factory Winchester load which chambers fine every time. The rifle has never had a problem with any factory loads I have asked it to shoot.

If I seat the bullet so the case is the same overall length as the factory load, it will be to deep. Is this a big concern? Is it a chamber problem? All brass is within spec per hornaday handbook vol 2.
{/QUOTE]

Whether or not their trimmed lengths compliment one another, are they trimmed to the proper length for the chamber? Have you compared overall case length of the trimmed cases with the length of the factory loads that will chamber?
What FL die are you using. Does it bump the shoulder back enough? Are you running the case into the FL sizing die far enough?
How are you measuring OAL. Is it base to bullet tip or base to ogive? What are you using to take that measurement?
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  #3  
Old 06-29-2014, 04:57 PM
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Join Date: May 2013
Location: Elkhorn Idaho
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Re: 1903A3 reloading trouble

Put through a full length Small Base die set, Check the overall length of the sized brass and trim .010 shorter than max length. If you continue to have this problem then check your headspacing and bump your shoulder back. If you still have the problem then all is not lost. You will have a reason to buy your Christmas present 6 months early,,NEW RIFLE!
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  #4  
Old 06-29-2014, 05:27 PM
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Join Date: Apr 2014
Location: Northern California
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Re: 1903A3 reloading trouble

I am using a RCBS full length die and a set of digital calipers to measure from tip to base. I am pretty sure I am running them through enough. The die is set to touch the shell holder when the press is at full stroke and then backed out 1/8th of a turn per the RCBS instructions. When I trim the cases they are trimmed a bit more that .010 under the max length. Is this the right die to be using? Could I be trimming too much? Is there a measurement I'm not looking at? These are the first reloads for my '06 I'm doing and just got the case trimmer so doing it and setting it up correctly the first time is worth asking even the mundane questions.
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  #5  
Old 06-29-2014, 06:12 PM
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Re: 1903A3 reloading trouble

A30-06

To have your full length RCBS die setup properly you need to have the shell holder contact the bottom of the resizing die with the ram all the way up and then screw the die in 1/8 more turn so you can feel it cam over when resizing. You said you backed off 1/8 turn which is the wrong direction. A minor point as I doubt this is what is causing your problem as you would end up with at least a neck sized piece of brass which should still allow you to close the bolt but not as easily as with properly full length resized brass.
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  #6  
Old 06-29-2014, 07:17 PM
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Re: 1903A3 reloading trouble

Factory die directions could be wrong for several reasons if the die is chambered too deep or too short. If too long it will not allow you to push the shoulder. If too short you will push the shoulder back to the point it flares the body/shoulder junction out and it will not chamber.

Measure the brass and adjust from that is correct way!

Where is your resized shoulder compared to virgin and once fired brass?

What is the body measurement about .250 above the extractor groove on resized versus fired and virgin brass?

COAL is the wrong measurement also. You must measure where the ogive is not COAL. You might find your reloaded bullet ogive is out much further and that is your problem.

.010 you could not even feel and it certainly would not be enough to stop chambering.
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  #7  
Old 06-29-2014, 08:04 PM
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Join Date: Apr 2014
Location: Northern California
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Re: 1903A3 reloading trouble

Where would I measure the shoulder from? The base? And what is the "ogive"? I have never heard of it. In my defense, I am new to this.
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