Good deal. Hope you enjoy shooting and killing with it.
But you gotta quit with the "mm" stuff. You are confusing me...... You're talking about string out groups 1.5" and then tell us it should shoot 20mm with hand loads in the same sentence.

You are talking to Americans here we don't know that "mm" stuff.
What is a "mm" any way.

[8D] No wait, I know......... It's candy.
I gotta say, a group the size of 20 M&M's isn't very good.
Just kidding!
Have fun with your new rifle.