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300WSM compressed loads??

 
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  #8  
Old 02-19-2007, 05:02 PM
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Join Date: Feb 2007
Location: Northern CO
Posts: 142
Re: 300WSM compressed loads??

I've only had one problem with compressed loads in my experience. I loaded up some 6mm loads with RE-22 under a 87 grain V-Max. I don't remember the exact load but it was around 50 grains, I do know it was right at the bottom of the neck. I seated the bullets pretty deep so they'd fit in my magazine, which in turn compressed the lcharge. I had no issues with accuracy, velocity, or pressure; in fact the load worked very well. I loaded up 20 or so to use for a coyote hunt later on in the month. Well, a month later I went to put some in the magazine and they wouldn't fit... pulled out the calipers and they had "grown" .010"-.025" in OAL. I know it wasn't the seating die because I measured every single one when I loaded them up. The only thing I can conclude is the powder didn't like being compressed that much and pushed the bullets out. I guess crimping would prevent it, but I'd rather not go that rout. I still use lightly compressed loads quite often, but if I can feel the bullet compress the powder when I'm seatting it... I back it off a grain or two.
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  #9  
Old 02-20-2007, 07:47 AM
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Join Date: Aug 2005
Location: Mouth of Hobble Crk Canyon, Utah
Posts: 621
Re: 300WSM compressed loads??

25AOD,

Your story causes me to reflect some. I need to take some of my 68.6 gr loads seated at 3.745" (Stoney Pt) and store them for future measurements in varying heat conditions and see if they "grow". If they do, I will need to change out my Lee collett neck sizer's decapping mandrel to either a .3045" or .3035", .3055" being the original. The smaller mandrel should give a tighter fit to the bullet; just hope it does mess w/ accuracy.
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