As far as the 30 cal guns, what versions do Kirby build?? Is it a 300 Allen mag, 300 Allen express, 300 Allen Improved. How would which ever version Kirby builds be better then a 300RUM??? My barrel is shot on my 300RUM and at first was thinking about jumping up to a 330 edge, but am thinking money wise if it would be better to just have him re-chamerber/re-barrel and true up the action on my sendero. Hope all this makes sense.