
I finally go to the range. Windless day, 53 degrees, overcast, 300 feet elevation.
I shot the following ammo with the following velocities and corresponding groups at 50 yards, 22" barrel at 10x with the 6 # 10 oz trigger!
Conclusions follow the data:
.38 blazer 124 lrn 938 fps 4"+
.38 Winchester 110 silvertip 1193fps 4"+
.38 Winchester match target 148 WC 845fps 2"
.38 XTP reload 993fps 3.25"
.38 Fed Hydrashock 147 1167 fps .75"
.357 158 SWC reload 1282 fps 1.375"
.357 Fed 125 personal defense 1985 .75"
.357 158 xtp reload 1999 fps .75"
.357 Remington SJHP 1706 fps .625"
.357 Winchester 110 JHP 1719 fps 2" - Actually it shot two different 1" groups in different places, it was last, I was getting tired and losing light and rushed the shooting. I think the Handi heated up.
a photo of my personal favorite group:

I took 10 rounds of each to the range and chroned only 3 of them, then shot 2 sighters and a group of five. If I jerked and knew it the group is the best of 4.
I used the bag under the sling swivel in the rear and on the frame in front, leaving the forend alone.
Rate of fire was about 1 round per 90 seconds. Between each different load I cleaned the bore, fired a pair of sighting/fouling rounds on a shilloutte, and then set to groups.
At first, when shooting the .38s, I was like - OHHHHHH NO this is an 8 MOA gun...all my fears were coming true.
But it got much better. I recalled the post about if you shoot them more they do better. I think that came to play here. At the end of the session I had a mixed bag of 40 misc rounds I fired as fast as possible, then cleaned the gun.
I did fire a subsonic .38 without hearing protection... not bad, it is erilly quiet. I cant wait to not hear it with a supressor.
I learned a few things, most notable the rifle can shoot with the right ammo. I know I have a decent piece of steel in the barrel and can continue on with my project. A trigger job will HAVE to be in the works tho.
Now I get to take that ill matched scope off, get the barrel chopped, turned, red dot mounted, and do it again!