By the way, has anyone mentioned the 125 grain Sierra FNHP? You can load that sucker up to almost 2600 fps in the standard 20 inch carbine. It hits like a hammer and shoots about as flat as anything else out to 300.
Those are ballistics not too dissimilar to a 257 Roberts.
Not really. Not even close to what a Roberts can do.
Using the .30-30 load referenced and .257 Roberts +P velocities as chrono’d from my rifle, a comparison tells a very different story.
.30-30 = Sierra 125g FN/HP, BC .119 @ 2600fps, 20” carbine
.257 Bob = Swift 120g A-frame, BC .382 @ 2947fps, 22” barrel Ruger M77
.257 Bob = Nosler 110g AccuBond. BC .418 @ 2163fps, 22” barrel Ruger M77
Given 100 yard zeros and a 300 yard target:
Sierra 125g FN/HP = -33.5”, 1088fps, 329fpe
Swift 120g A-Frame = -12.0”, 2298fpe, 1534fpe
Nosler 110g AccuBond = -9.7”, 2538fps, 1573fpe
Love my .30-30 but for longer reach my Roberts wins every time. By a mile.
