Yes, based on s/n mine is steel 1973 vintage with magnum cylinder, I can see the ridge inside and the 22LR is way loose.
My main reason for wanting the LR cylinder is trying to avoid the magnum boom, my hearing can't take it. I did find Winchester makes a 45 gr 1060 sub sonic. Yeah, I know defeats the magnum but I'm only interested in plinking. Got the gun for nothing through an estate, couldn't turn it down, gift horse and all that.
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Back to back World War Champs.
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