WD91,
Thanks for taking the time to make that video and posting it here.
I enjoyed watching it.
I've been down that road with the Lee 225 mold myself.
I was shooting at 75 yards though and had larger groupings.
This was with an AR15 1:9 twist.
Some groupings were so large that all of them were not on paper.
I was shooting around 2600-2700 fps though and was advised here to slo-o-ow them down, which I did.
My groupings did improve but ultimately I was spending so much time on it with results I was not happy with.
I tried various powders (748, BLC-2, IMR 4227, and 4064) and never really got the groupings I was hoping for.
I even did weight sorting to help improve things.
My objective was to get similar (better?) groupings than factory or jacketed reloaded ammo.
For plinking at 50 yards, cast bullets (for me) would be fine. But if I wanted to shoot some steel at 100 yds, forget it.
I can do that with jacketed reloads.
I went back to jacketed bullets and got better results at higher fps.
Thanks again for your fine video.
I'll check out your other youtube flics.