lotech,
The standard magazine boxes on Model 20s have been three inches long since Melvin started making them in the 1980s.
John,
I’m not sure this is accurate. My model 20 in .260 built in 1997 does indeed have a 3” magazine, but my model 20S’s built in 2003 and 2012 both have 2.5” magazines. I think you meant the model 20 has always had a 3” magazine which is true, but the model 20S has a 2.5” magazine.
Les
