This is for my dad's old Smith and Wesson 1500 (made by Howa). It's beat up, but still shoots lights out and has a lot of sentimental value. I have been shooting over RL22. But this year, we started hunting hogs in the summer and I have found RL22 to be very temp sensitive. I found a couple of pounds of RL23 that I am going to try to work up a load for the old girl that is less temp sensitive.