My Swift is loaded with the Sierra 55 gr BT Spitzer marked 'Gameking' on the box's cover. The bullet shoots well in the factory M70 bbl.
I would not use that tiny bullet on deer as it may not make a large enough wound nor is it even legal in many places for that reason.
When I was a kid, not knowing any better, I shot a buck at 50 yds in the ribs with a .222 loaded with the Sierra 55 gr Semi-pt.
The buck ran off and we could not find it.
