Would this be safe to shoot out of NEW, reproduction Remington 1903A3 ? Never fired, 4 groove barrel. Gun gurus at the range say hunting ammo will ruin the rifle. This ammo seems close to the M1 Garand ammo from my reading. The internet is full of experts on pressures, brand names, bullet weight, SP vs. FMJ. Surplus vs. commercial. Bullet weights of interest is 150 grn. 165 grn up to 180 grain in soft point. Used for target shooting and hunting. CMP issues a warning against bullet weight not to exceed 174 grn 30/06, for Garands / 1903A3's, due to the age of their rifles. Being a new bolt action rifle based on the Mauser bolt, this wouldn't be an issue ?
Thanks for reaching out George! Honestly, I don't see a reason why this ammo should damage a *reproduction* 1903A3, but that's not enough to make a promise which could wind up damaging your rifle. I always defer to a firearm's manufacturer's opinion when it comes to ammo compatibility. I just sent an email to U.S. Armament Corp asking for their take on the matter, and I'll relay their input to you as soon as I hear back from them.
*UPDATE* I just heard back from the gunsmith at U.S. Armament Corp. He said that this ammo is indeed suitable for your rifle!