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7mm RUM case life

 
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  #8  
Old 11-06-2005, 06:58 PM
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Join Date: Feb 2005
Posts: 18
Re: 7mm RUM case life



Men don't listen and women can't read maps :-) In my post it states the case cracked and leaked gas, (separation) that's what you are looking at. And, I assume the drop in pressure from the case head failure caused the incomplete seal of the neck letting gas by it. No other cases have done this.

I've tried AA8700 and it shoots slower then Hornady manual. IMR 4831 with 139 Gr SST's,.. about right on with manual. Rifle is out of warranty, as far as Savage is concerned, I bought it in 2003. They no longer make that chambering anyway, ALREADY TALKED to them. There's many other things here to look at yet, finish on chamber wall, residue oil in chamber, brass hardness, barrel finish and dimensions etc. etc. I will neck size only from here on out. And getting barrel air gaged. IF I can't get the velocities I want, a re-barrel job on Savage is a garage project anyway, so. no biggy. I'll have a new barrel made, screw it on and start over.
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  #9  
Old 11-06-2005, 08:28 PM
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Join Date: Jun 2005
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Re: 7mm RUM case life

sorry, i guess my brain took the weekend off.
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  #10  
Old 11-06-2005, 09:08 PM
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Join Date: Feb 2005
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Re: 7mm RUM case life

So, what<..I'm still jealous of those velocities your getting.... My 40 years of reloading experience is being sorely tested by this cartridge/rifle. If it didn't shoot like a laser, it would be history.

Antelope 2 weeks ago in Wyoming 260 yds. Horn. SST 154 grain @ 3150. The trajetory matches the reticule crosses on my 4.5-14 Burris Rangefinder scope out to 600 yds. Hit behind shoulder, 4 inch exit hole through rib cage other side. Buck ran 60 yds. without heart/lungs.

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  #11  
Old 11-07-2005, 06:40 PM
NTM NTM is offline
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Join Date: Mar 2004
Location: Alberta, Canada
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Re: 7mm RUM case life

I had a couple of cases look excatly like that when I first got my rifle and was working up some loads-after talking to several people and visiting several web sites the conclusion was too light a load. I was starting 10% below max and working up. Now I start 5% below max and don't have any problems. I am on my 4th reload with this brass shooting max loads of retumbo and 160 grain accubonds. I full length resize every time. The rifle is a Savage 111FL that I bought about a year and ahalf ago. Once I put a decent trigger and stock on it it will be an awesome gun.
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