Hi Everyone;

I am a new member here but ran across this post and wanted to add my 2 cents worth.
I have a 550 mag that I built and it is really something to shoot.
I used Montana Rifle Co. Mag action with a Pac-nor barrel.
If anyone is interested in any more info please PM or email me.
I am willing to discuss all I have done with this caliber.

Samm_550