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300 WIn Mag confusion

 
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  #22  
Old 01-09-2012, 05:03 PM
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Re: 300 WIn Mag confusion

Quote:
Originally Posted by Carman View Post
CFVICKERS......max casing length is 2.62", so should I trim to 2.618 or less?
I would if it were mine. Personally I would trim it to 2.610-2.613 and fire it to see just how much it is stretching. With one round. He was right that the load COULD BE hot, but it doesn't sound out of line at all. Just have to check it. If you get a sticky bolt after trimming then you will definitely need to back your charge down. You are naturally going to get more case stretching the closer to maximum that you get. But if stretching is not accompanied by flattened primers, loosening primer pockets, or pressure rings above the belt then you are most likely in good shape.
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  #23  
Old 01-09-2012, 05:04 PM
T F T F is offline
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Re: 300 WIn Mag confusion

Quote:
Originally Posted by Carman View Post
CFVICKERS......max casing length is 2.62", so should I trim to 2.618 or less?
2.620 is max and trim length is 2.610
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  #24  
Old 01-09-2012, 05:08 PM
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Re: 300 WIn Mag confusion

Tikka mike.....I thought you were done here. Vickers has one of the same rifles, just a different caliber, and has the same problem when his brass gets too long. So why could I not have the same problem, especially when I KNOW for a fact that my brass has stretched? Why do you have to be so cock fire arrogant? Tell me....do you own a Savage LRH? Do you own a 300 win mag? If so, what do you load for it?
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  #25  
Old 01-09-2012, 05:12 PM
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Re: 300 WIn Mag confusion

No primer flattening, loose pockets or rings above the belt at all. The Winchester xp3 cartridge has a flatter primer than mine.
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  #26  
Old 01-09-2012, 05:12 PM
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Re: 300 WIn Mag confusion

I guess I'll wade in on this as I've had it happen a couple times, exact same deal. What I found is it's not from being a tight chamber but long head spacing, what happens is you fire SAMMI spec brass, which is a couple or few thousands smaller than a min spec SAMMI chamber, in a chamber that has been head spaced over spec. In the times I ran into it the chambers were over spec by .009 with put me at .013 head spacing, when you fire the firing pin pushes the case forward the when it fires the case slam back which can give you flatter than flat primers and can lock you up or give you some heavy bolt lift, usually factory will shoot better due to them being loaded lower than hand loads.

A quick check for this is to just put some scotch tape on the back of a none fired case, layer on the tape till you can't drop the bolt, each piece of tape is around .002, if you get out past .010 your going to need some tools!
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  #27  
Old 01-09-2012, 05:20 PM
T F T F is offline
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Re: 300 WIn Mag confusion

75.4 grains of RL22 behind a 180 grain Nosler E-Tip is a hot load to start with 77g is max with RL22 just thought I would let you know
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  #28  
Old 01-09-2012, 05:30 PM
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Re: 300 WIn Mag confusion

Thanks TL. I knew it was on the upper end but since it worked well in the Ruger, I thought I would try it it in the Savage and see. I have learned a lot from all of you and thank you for all of your input. Will try one round with the 75.4 and trimmed cases. If the problem persists, I will back off to around 74.6 and work up.
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