Have a trip booked to NZ June 2020. Hunting with a reputable outfitter and will hunt with his rifles of which are a .270 and a 300WM. We will hunt red stag and fallow deer. I say we as the other hunter is my grandson who has little hunting experience. He has fired all of my rifles without trouble. But, shooting at the range and shooting from a prone or sitting position do not compare. He has little time to practice as he is in high school and works 40 hours weekly.
My question, which would you recommend for the novice shooter on these animals?
I hunted NZ in 2016 and was successful in taking Tahr, red stag, arapawa sheep and multiple wallabies. On this trip I took my 300wSM that was more than adequate. Not taking a rifle internationally this coming 2020. Thanks in advance for the information. MTG

get him to make time to practise shooting your rifles. Not a whole day at the range , but shooting a single shot from a sitting or kneeling position , using a tree as a rest , shooting from a prone position etc.

Thats the the type of shots he will be taking when hunting , but mostly just one shot so make the first one count.

Recoil wont be an issue for one shot in a hunting situation - he wont even feel it ;-)

270 is plenty of gun for your hunt, Outfitter may have 243 or 7mm08 too?

Both Muzza and Top Predator are right.
I personally wouldn't go as light as a .243 with an inexperienced shooter but 7mm and upwards should be fine. Important to make sure your grandson gets a few target shots through the outfitters rifle first before hitting the hill. If it's shooting straight it will give him more confidence in making that first shot count on game. If you need to supply your own ammo and have time to shop here all the common calibres are easily available. You need to show your visitors firearms permit / license to purchase ammo.
Thankyou for coming to NZ.
Enjoy your hunt and have a great time.

The .270 will do very well. It's pretty much perfect for reds and fallow.

I suggest that if he doesn't have time to go to the range, get him to practice by dry firing the rifle he's going to use, its the next best thing, and works very well, even if its only for a couple of minutes a day.

Would be worthwhile getting him to practice a few shots with a bipod even just off the bench to get use to the hold position etc.
I would be very surprised if the outfitters rifles are not fitted bipods, and suppressors for that matter too. Most common attachments in our hunting fields nowadays.
The 270 Win is ideal for our game. The 300WM do recoil hard compared with the 06 or 08 case sized cartridges and when hunting in the areas you will be, I wouldn't be relying just on having to use one shot. If he needs a follow up and has been belted by the first he will not be comfortable trying to get in a second good one at longer range. A 7mm-08 would be a perfect easy shooter for him if available.

I will opt for the .270 with 140 gr. Accubonds. Wish I could have my grandson practice albeit we live 2700 miles apart and he has no access to a shooting range. Will have him fire a few shots prior to hunting. Thanks all! MTG