I had some Winchester lead free 22s.. If I remember correctly they were made with light tin bullets They shot pretty badly in my Remington 504 and the Win 52. Shot them in an old Win 69 and they were just acceptable. Got them in an estate buy. I just checked and I have one more box left. Going to a gun show near me...soon. The box states 20 gr tin projectile at I think 1650 FPS. Heck they only cost me about 50 cents a box anyway. But I do like to hit what I am shooting at. Oh...I shot some cottontails using them..when I hit one they DID dispatch the critter. Inside 20-25 yds they were about angle of wabbit