All H&R/NEF
rifle barrels come drilled and tapped for their scope rail. The center of the BC dovetail is ~.640" from the muzzle. Mine shoots up to 539gr bullets accurately at 100yds, haven't shot anything farther than that yet. Bernie shoots hits accurately with 500gr+ bullets at 800yds. The BC muzzle comes with a recessed target crown, you can always install a
dovetail blank instead of cutting the barrel shorter to loose the dovetail. There's one on both of these....
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My .243 Ultra Varmint shoots 95 Fusion and 100gr Hi-shoks extremely well, but others like 80-85gr bullets, each is different, find what shoots the best and you'll be happy. :wink:
Tim