Is the question why a Gibbs?
I can't answer for others but for me it is simple...I found dies cheap, .30-06 guns and brass are everywhere (and cheap), I can probably approach .300 wsm velocities with four in the magazine, the chambering work is not crazy expensive, I like dinking around with this stuff.
No more, no less.
I already have an accurate .30-06 and .300 Win Mag so it really won't do anything for me that I couldn't do with the others but it has been a fun project and a little nostalgia makes hunt prep more enjoyable for me.
I think Patches O’houlihan summed it up best...