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7-300 win mag AI

Cool Round! I'd like to know any tricks to forming this brass before firing, I have some ideas about using box ammo converted.
 
calib said:
think you may have that figured out, where you shooting over the chrony when you shot the seating groups? you plan on shooting any of the bigger stuff out of that? i would be interested to see what it would do with a 180 berger. I am running the straight 7-300 win with a 180 at 3140
Click to expand...
That's what I want is a straight 7-300 win, I don't know why but I do.
 
archeratlrg said:
I know this is an older thread, but what is it blown out to on the shoulder?
Click to expand...
1726050208128.png

Here's the picture he posted with the 40 degree shoulder after fire forming

 
Try the STW, very easy of the big bullets at great speeds, or the 28 Nosler. All are extremely accurate and laser flat shooting.
 

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