A Self-Defense Precision Rifle (SDPR) should have a number of qualities, the highest of which is pinpoint accuracy at realistic ranges (max distance you can ID a threat). As a survivalist, I consider a realistic range for a self-defense rifle to be a good deal less than what one would suppose the operational ranges of a military sniper would be.
My standard for a precision rifle is 1 Minute of Angle (MOA is approximately 1 inch at 100 yards, e.g. 200 yards = 2 inches) groups at any realistic range. Beyond precision, attributes of a SDPR would be reliability, durable design, and comfortably ergonomic. All of these features are embodied in the Springfield Armory Loaded M1A, and at a reasonable price.
I have owned a 7.62×51 NATO caliber Loaded M1A for the last 14 years. It now has had 1260 rounds through its stainless, medium weight, National Match barrel. It consistently produced one half MOA groups with Match ammo.
I was sent a 6.5 Creedmoor Loaded M1A for a comparison shoot. Except for the caliber, the Archangel stock/Springfield scope mount the 6.5CM came with, and the Sightron 6.5-20x scope I put on the 6.5CM for the shoot, both rifles are the same. I was sent a couple hundred rounds of 7.62N and 6.5CM Norma Match ammo for this comparison. The 7.62N is the 168gr Match bullet, and the 6.5CM uses the 130gr Match bullet.