Not recommended; will cause a bulge.
You risk damaging the barrels if you do.
The BSS
If you have the money....
1972
1986
12 gauge BSS were first made in 1971 and 20 gauge in 1972.
You must call Browning with the serial number to find out.
1976
1972-1987
50-1000 usd
1972
Made before 1975