I have two actions. One is an original (hard to open( and the second is a Easy Open action. I bought the first used in 1983 with a Super 14, 223 barrel. I shot factory and many different hand loads rounds through it, and never even got fair accuracy. The small 22 center fire cartridges are what I play with now days. I have a scoped Bull 10" 22 Hornet, a scoped 10" Bull 221 Fireball and a 10" Octagon 221 Fireball with Iron Sights. The scoped guns are groundhog accurate out to 200 to 250 yards. The octagon/Iron sights require better eyes and skills for me to hunt whistle pigs beyond 100 yards.
Almost 20 years ago a friend and shooting buddy had a Scoped Super 14 in 22 Hornet. He was using hand loads that were about 1/2 MOA accurate, and I was using First year lot number, Hornady V-Max 35 grain factory ammo. In a head to head shoot off. We were laying prone and using Harris bi-pods. From the ridge we were on we had safe shots into a freshly plowed field. A rain had washed the dirt and dust from field rocks, so those were out targets. It was a draw out of 50 rounds each we both had 45 hits at unknown distances. Our misses were all from underestimated distances not wind or trigger errors.
I have several other barrels, but my favorite is a 12" Hunter (iron sights) in 375 Winchester circa late 90's. I love to shoot is when there is just enough light to see the backstop. The Ball of Lightning & Thunder is mere inches in front of your hands! I estimate the muzzel flash to be just over 3 feet in Diameter!. That "Muzzle Tammer" break controls the recoil very well. I would shoot warm cans of bubble-gum soda (vile tasting stuff!) at 30 to 40 yards very easily. If you get a chance to shoot alternating cans of bubble-gum soda and cans of sour kraut on a warm afternoon; be sure the wind doesn't bring the smell back to you!
Ivan