450 Bushmaster Mag Mods

[mattri]

Success!

The WSM mag works! I bent the feed lips in just a touch and used the spring from the 223 mag, moving it to the front of the mag and using a little JB weld to hold it in place.

My handloads with 300gr XTPs feed and I now have an honest 3 round mag.

The 400gr cast bullets have such a huge meplat that I don't know if they would ever feed reliably in any mag, factory or not.

Will post pics soon.

Still curious re a 350 Legend mag...

[Underhammer]

Great, glad that you have one that works!

Did you use a rear spacer?

[GaCop]

Success!

The WSM mag works! I bent the feed lips in just a touch and used the spring from the 223 mag, moving it to the front of the mag and using a little JB weld to hold it in place.

My handloads with 300gr XTPs feed and I now have an honest 3 round mag.

The 400gr cast bullets have such a huge meplat that I don't know if they would ever feed reliably in any mag, factory or not.

Will post pics soon.

Still curious re a 350 Legend mag...

Good to know, thanks! My resized 45-70s, RNFP, will feed from my modified 243 magazine. I have them seated out quite far and that seems to help feeding. I'm only about .020" OTL. The first two feed beautifully but the last want's to hang up just a bit at the case mouth.