Hi John, Thanks for asking.
That is a 50 yard group my son shot from a bench rest. It is from the right barrel of my .45-70 DR that has 26 inch barrels. The left barrel is also accurate but he was shooting different targets AND had two bullets in the same hole + a flyer.
Gun is a Beretta GR-2 12 ga converted to .45-70 DR by a man that made it for himself and hunted deer with it for 10 years before he passed away from a heart attack while dragging a buck to his truck.
He also made my .405 WCF DR and so I bought the .45-70 from his estate.
100 rounds of loaded 300 grain ammo came with the rifle and it has proven to be accurate and deadly:
I like to break in new guns on hog.