This catrridge is easily a 1000yrd performer,if not further.
To get the most out of it ,you need to use bullets no lighter than 200gr.I have had very good/excellent results with the Nosler 200gr accubond,BC of .588,I don't know what the BC of the SMK bullet is,they're not available in Down Under,but it can't be too much better than this.
I have had confirmed hits on kangaroos @ 800+ yds with this calibre,same with my 25-06 Rem.
My rifle is not a regular long range unit,it's a Kimber 8400 Classic Select Grade in 300 Win Mag,26" barrel,and it only weighs 7 3/4 lbs,with scope,a Leupold 3.5-10-40 VXIII.
You really need to study your ballistic tables to be able to do this with this type of set up,the scope is great,but @ long range it leaves a little to be desired,but I also use this outfit for regular hunting as well,mostly Sambar deer.
I think your rifle should perform satisfactorily.