Help with .458 socom

[B47stryker]

My .458 socom has a failure to feed, it has a collapsible stock. Failure to feed if over three rounds in magazine.

 

[Ggreen]

What type of magazine are you using? Has it always had this problem?

 

[PGRChaplain]

WELCOME 2 !!!!!!!!! What Rifle is it? Factory or Aftermarket Mag? Tried another Mag?

 

[throttletony]

My initial thought is magazine issue.
Secondarily, do .458s have any kind of feed ramps?

 

[Hop]

Mag compatibility is a big deal with .458 SOCOM. It depends on the bullet style. I use a slightly modified P-mag for the blunt hollow point rounds and stannag mags for the longer round nose bullets.