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Join Date: Jan 2011
Location: North Eastern,Pa
Re: h&r topper m48
They brought the "Topper" back out in 1992. As far as I know, its a 3" chamber. You may be confusing the forcing cone with the chamber. Of course any gun prior to that date is a no way for 3 1/2".
"Be nice, until its time to not be nice" (Patrick Swayze...Roadhouse)