Over many years I've owned about 10 Ruger Blackhawks, half of them in 45 Colt. I found them all with one exception to be well made, and modestly accurate. However, the one above did not live up to expectations and took me while to get straight. It started out to be a practice gun for me to get back into SA shooting while I waited for John Linebaugh to build me a full house 500 Linebaugh. But the gun as purchased new would not shoot better than 8" at 50 yards regardless of the load tried and John could not make it do any better. The solution was for him to fit a Wilson target barrel 4.75" long with a straight taper .800" in diameter. This is what the gun can now do at 50 yards with the right heavy load, 300 grain LBT LFN plain base over 13.0 grains of HS-6.
He also did a complete action job (e.g., oversized base pin, oversized bolt, .002" B/C gap, zero endshake, free spin pawl, etc.), but kept the springs factory strength. Last, he did his signature grip frame modification which removes steel from the front strap immediately behind the trigger guard. This gives my large hands more room during recoil without changing the trigger reach. Combined with the modified grip frame are a custom set of grips with presentation grade French walnut. They are wider in profile with a broader, flatter rear face that spreads the recoil over a larger portion of my hand. The difference is startling. My first Blackhawk in 45 Colt was a five shot high power gun built by John Gallagher in the mid-90s. I never could even approach the power level was designed to handle due to the extreme discomfort of the factory Bisley grip. In sharp contrast, I shot John's personal 500 Linebaugh with his modified grip and found the gun very easy and comfortable to shoot. The load was a 450 grain load with 16 grains of HS-6, his go to everyday load, about 1100fps.
You should also notice the long range front sight with two silver inlays which really aid in holding accurately on targets well past spitting distance. Like the full size (6'X9') steel buffalo targets at 1000 yards (they're the little black dots on the far ridgeline.
Keith