Been shooting a 20 Practical nearly 10 yrs now...
although its not a field/carry weight...it 17# or so
its a helluva p/dog gun...I see no negatives...use 223 brass
Redding bushing neck dies..std 223 FL die to form/less the stem
Forster 204R seater to seat....loads ? if it works in a 223...
it will work in the Practical....if you don't like the Practical
think about the 20-222 or 20 Vartarg (Fireball) of which I also use
http://www.accurateshooter.com/cartridge-guides/20caliber/