Other option may be the Remington 700P LTR in .300 RSAUM.
It is a new cartridge and they have a 190 gr. load that just has guady numbers and it will only get better as they develop more loads.
The 300rsaum is not a new cartridge.it was introduced to compete with the 300wsm,but sales were so bad that it is being phased out.It has already been dropped from several models in favour of the 300wsm.They won't be developing more loads for this dying cartridge,in fact it is more likely that this cartridge will soon be dropped all together.