I have a 700 Remington Synthetic ADL in 257 Roberts. When I bought it I bought a box of Federal factory load 120 grain Nosler Partitions I have an index card in front of me on my computer desk. On it is the first three shot group I fired with it and the Partitions. Four thenths of an inch. It did not shoot the 100 grain Ballistic tips nearly as well. It shoots the 100 grain Hornady SP very well and at 3050 FPS. I am using IMR 4350. with a Magnum Primer.