I heard they will not let Bob shoot because he shoots a 223. The ISSF will not let the 223 on that range in New Zealand, even though it is allowed by the rules.
Who did you hear that from? The ISSF has absolutely nothing to do with Palma, or the long Range world championships. Regardless of what the sanctioning body or host range says, the US Palma Team shoots .308. Having 15 team members shooting .308 and one shooting a .223 does not make things easy on the coaching staff, and would add a lot of needless complications.