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Gunsmithing how to make an 308 ai mag except 300wsm

travis thomas

Sergeant
Banned !
Full Member
Apr 28, 2012
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s.w. virginia
Just what the title says.. I have a aics 1.5 stock on my new 300wsm build and id like to know how to alter the ai mag wich is a 308 mag to feed 300wsm smoothly!
 
Re: how to make an 308 ai mag except 300wsm

Well, what people I know have done is take out the plastic spacer and open up the feed lips, that should be all.
 
Re: how to make an 308 ai mag except 300wsm

I've got a brand new alpha 300wsm mag, never used, I will trade you straight up for the .308. How would that work out for ya. I could use the 308 and have no use for the 300wsm.
 
Re: how to make an 308 ai mag except 300wsm

Here's a couple of side by sides. Sorry for the crappy pic

Inside feed lip dimensions are .540

That is also the mag I was asking if you wanted to trade with.

P1010017-2.jpg


P1010016-2.jpg
 
Re: how to make an 308 ai mag except 300wsm

If you are going to use the AI mag, first thing to do is drill out the spot welds in the front of the mag and remove the METAL spacer. Then have the holes welded closed. this will give you a mag capacity of right at 2.950". Next, you will need to spread the mag lips apart a bit. You can use a set of wide tip pliers, but I prefer to sacrifice a piece of brass and force it back and forth between the mag lips until the spread apart far enough for the rounds to feed.It takes a little trial and error but is not very hard.

Otherwise....buy the alpha or trade the guy who offerred above.