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SOLD/EXPIRED 300WSM Lapua brass at BulletCentral

JAYgs8163

JAYgs8163

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Lapua Brass, 300 Win Short Mag Brass, 4PH7080C, (Box of 100)

Discover the pinnacle of reloading excellence with Lapua's 300 Win Short Mag Brass, product number 4PH7080C, in a convenient 100-count box. Crafted for reliability and precision, this brass is the ideal foundation for high-performance rounds, preferred by competitive shooters and precision...
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If you take 300 WSM brass and neck it down to 7 mm… Will that fit and shoot safely in a 7 WSM chamber?
 
JAYgs8163 said:
I've never done it but there are numerous threads about doing it. I've got a nice supply of Bertram 7WSM brass and Winchester also.
Click to expand...
Yes, I see that but some say yes, some say no. I got plenty of Winchester and betram and federal Brass, but obviously I would like to have Lapua if I could.
 
The 7wsm and 300 wsm have different headspace but looking at chamber drawings they both have the same overall case length so I suppose like mentioned before if you do the false shoulder or jam a bullet in the lands and fire form it should work.
 
It can be done. It's a lot of work! It's been done by many with good results. Here's a good read about the steps involved. Sounds like some haven't had enough coffee yet this morning! 😉

www.snipershide.com

.300 / 7mm WSM neckingdown ?'s

Good day fellow shooters. I have been reloading for over 20 years but mostly for hunting applications and a few target applications. My most recent project is necking down .300 WSM brass to make 7mm WSM using Norma brass. I have never necked down, or "wildcatted" a cartridge so I have a few...
www.snipershide.com www.snipershide.com
 
So it seems similar what one would for an Ackley Improved. Nice to know and thanks for the info. I wonder how many people told P.O.Ackley that a wildcat couldn't be done by necking up or necking down a cartridge? I'm sure they told him to go look in the manual too.
 
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