I`ve got one, a M1999 action with a 1/9" twist, 22", Montana Rifle barrel on it chambered by Montana. The cartridge is very similar to the 6.5-06 and gives about 100-150 fps more velocity then the 260 Rem or 6.5 Swede with modern handloads and like bullets. The word is the round is also a barrel burner, but I have only had mine a short while and can`t really verify that. The long range shooters are useing it and claim very good accuracy and velocities approching the 264 mag, but they also use 28-30" barrels and their loads are not conservative in the least.
Mine does shoot well and recoil is mild. The 120 gr bullets at this point seem to give me the best accuracy in this rifle. I use Lapua brass and it is expensive to load for. Norma and Hornady also make cases and offer load data. The cartridge is offered by Nosler and Norma in loaded form at twice the price of premium factory stuff in the 260 or 6.5 Swede. The rifle isn`t cheap to shoot.
I also have a 6.5x55 and two 260 Remingtons at present, and don`t see much difference between all three. I don`t know if I would build one again unless I was shooting 1000 yd bench rest, or had another reason where the smaller rounds just wouldn`t do. Then again the neat factor is high with it...
