Hi mate, I'm a sambar hunter as well and have a 300NM for long range hunting. I have a few mates who have taken sambar out as far as 1150m using Tikka T3 varmints in 300WM using 180gr accubonds.
Shot out to 1224m this weekend. Hitting 2908fps with the 230 Berger at 84.5gr of retumbo. Shot just under a 4 inch group at this range, no load dev done yet though.
I really like my PMII, but will be getting a Nightforce for my next long range gun (and probably the rest as well) due to their lifetime warranty. After using a mate's ATACR and BEAST, I'll be chasing a 4-14x42, and either a 5-25x or 7-35x, all with the Mil-C reticle.
Not new to shooting but this is my first custom rifle. I spent a decent length of time researching what I wanted and received plenty of advice from mates with more experience. After bouncing around on gunsmith options here, I settled on APRS in SA to build this one up and they did a fantastic...