Oh, here we go again Charlie ....
I've tried the Russiansteel cased stuff, loaded with curry powder and cushed celluloid film / hundreds and thousands / powdered milk etc and it functions very well, couldn't hit a barn door if it fell off the hinges on top of me though!
But GGG, from my Lithgowwith my 'good' SUIT on was printing very small groups at 100 yds, as Charlie can attest on our last outing...