It's 686 vs GP100 vs Taurus 66. Despite what peeps say 6" for the range 4" for everything else, 6" is pretty dang long for the range too. I like 6" barrels, but at 25yrds, I don't think the difference is noticeable (myself).
For range, revolvers are great fun. I like mine. Don't get internet illusion though about ammo options. There aren't many, hardly any, that do better than a 9mm and the options are smaller. Luckygunner ammo test results 9mm vs 357. Yes, the weights are hugely different between 147gr vs 158gr bullet--not.
The HST 147 does about what every good 357 does, and outperforms many other 357 loads in both 2 and 4 inch revolver barrels.
Price for factory ammo is going to be $20 a box and up. $15 with shipping days are done.