Thanks for posting, but mind you elaborating a bit more about ISSF rules?
Specifically interested for PCP air rifles, in this case for Canada events.
What limitation or allowed with calibre?
What limitation with power?
What if any limitation with equipment weight?
What limitation with ammo choices, pellets or slugs, off the shelf only ammo or custom built?
I am pretty much familiar with BR games in USA, N50, ELR, PRS,
but if anybody could chime in with more details I believe that could help the wider audiences as well.