It's British target rifle, 64 caliber. Whitworth type rifling. Several of the style guns were used by sharpshooter of the day.
The best story I know of is on Jack Hinson. If you don't know the story I recommend at least google the name and "revenge" I'm sure the story will pop up. He used a heavy target gun too. Likely a US made one, I think his was .45 or .50 caliber
It's British target rifle, 64 caliber. Whitworth type rifling. Several of the style guns were used by sharpshooter of the day.
The best story I know of is on Jack Hinson. If you don't know the story I recommend at least google the name and "revenge" I'm sure the story will pop up. He used a heavy target gun too. Likely a US made one, I think his was .45 or .50 caliber