The 686 is an L-frame with K-frame grips. The 625 is an N frame. I like big bullets for home defense, and I use a Ruger Alaskan with the compact GP100 grip and 44 specials in it for that role, but my hands just don't quite handle the N frame very well. An L frame with sanded down grips is about as large as I can instinctively shoot - so if the Alaskan isn't available, then the 686 with 7 shots & a 3" barrel gets the nod.
Truth is, I don't think there is a measurable difference in the self defense value of ammo once you hit the 38+P range. Below that, I don't think you get adequate penetration and reliable enough expansion for good self defense use (although I once pulled a .22). From the .38+P up, I think most any round with modern bullets will do a decent job, so any one a person likes to practice with and carry suits me.
Still, the Alaskan with small grips ain't to be sneezed at...
Truth is, I don't think there is a measurable difference in the self defense value of ammo once you hit the 38+P range. Below that, I don't think you get adequate penetration and reliable enough expansion for good self defense use (although I once pulled a .22). From the .38+P up, I think most any round with modern bullets will do a decent job, so any one a person likes to practice with and carry suits me.
Still, the Alaskan with small grips ain't to be sneezed at...
