This seems to be an unpopular opinion by what I’ve read in the thread but I would just rent rifles. You’ll spend the cost of renting one just getting yours there between a high quality case, baggage fees, and a travel agent. Depending on where you live you’ll likely have 3 flights to get to your destination. No worries about the airlines losing them and not having to drag them around or wait at a baggage claim and no extra paperwork and customs delays.
I’ve only been once so far but I took only a carry on and a backpack and didn’t use a travel agent and used a camp gun and scored hits at 370 and 390 yards. The camp rifles will likely be suppressed too something you may or may not have.
If you are sentimental or can only shoot certain guns well by all means take your own rifle.
Oh yeah, and pack light. Your laundry will be done daily by the camp staff so no need for more than a couple changes of clothes, maybe some extra socks, and good shoes maybe two pairs.