I've recently joined 24hourcampfire and feel it will be not only a great source of information but educational, as well. Now, my question. I recently purchased a Winchester Model 70 XTR in 257 Roberts built in 1987. I am wondering if +P ammo is safe for this rifle. I do have some 117 grain Remington green box but would like to get a little more "pop" out of it and +P ammo gives me more ammo options. Thanx in advance.