Yes I am. Hornady Frontier Lead 148 grain HBWC. I am a bit concerned about having squib loads.
Well, then, the first thing I'd note is that your AA#2 load is actually slightly above Western's load data
max (for non-+P rounds). They show 2.6 as the start and 2.9 as the top in their online data:
http://www.accuratepowder.com/wp-content/uploads/2018/11/WPHandloading-Guide-7.0-Web-REV.pdf You have plenty of room to work
down without even leaving the comfort of published data.
Second, in handguns, a low-powered squib load poses a different kind of danger than an over-pressure round. With the over-pressured round, the first sign of trouble may be the gun violently disassembling itself. With a low-powered round, the danger is in the
second round after you stick a bullet in the bore. While there's not a good way to safely work up to an overpressure explosion and then back down, you can work all the way down to a stuck bullet and then back up... as long as you notice the stuck bullet immediately. Do your testing with a nice cardboard target and at a distance that allows you to clearly see the holes. Test all the different powder positions (i.e., drop muzzle toward the ground, then slowly raise to fire in order to test powder-forward position, etc.). If you don't see a hole in the target, or if you're not
sure you saw a new hole in the target, check your bore. Work down until you get what you want, or start seeing failures to stabilize or truly erratic accuracy,
or you stick a bullet.
[ETA: I removed a paragraph about some of my loading experiences with AA#2 and plated wadcutter bullets. I'm at the office, and was referencing charge weights from memory without looking at my notes... I decided that was imprudent. I may add it back tonight if I remember to check my logs.]
