vlavalle
Single-Sixer
Impressive shooting! And the Creedmoor caliber is quite powerful also. But it is a bit silly comparing medium powered handgun ammo (.357 Mag) with a high powered rifle one. Although, there are exceptions, and that is when you get up into the very high powered handgun 'cannons' like the S&w .460, and the S&W 500, and the new handgun 'King', the .500 Bushwacker. While these do not have quite the same velocities as high powered rifles, they can come close (the S&W .460 at 2,200 fps and 2,300 for the Bushwacker vs. 2,700 fps for the typical Creedmoor).I have owned a 77/357 for about 5 years now. IMHO, 1-2" groups, depending on the load, are what you can expect fron any pistol- caliber carbine/rifle. My best load for my gun uses a 158 gr. SP/HP loaded over 16 gr. of H110; this load averages 1740 fps with an SD of 6 in my rifle. It consistently averages 1" groups at 50 yards. If you need better accuracy than this, you need to look at a true rifle caliber. The stubby, poor ballistic coefficient bullets used in a .357 Magnum will never equal the long-for-caliber, high ballistic coefficient bullets designed for rifle calibers. That said, this is still one of the most fun rifles that I own. If I want to hit the 12" steel plate at 1,000 yards, I use my Masterpiece Arms BA in 6.5 Creedmoor. Once I've doped the wind correctly, it can hit the steel with every trigger pull.
This is all in my ballistics file.