The 7x61 S&H (Sharpe & Hart) was inspired by
the 7x61 MAS M1907 cartridge and designed
by Philip B. Sharpe, Richard F. Hart, and Richard Ditchburn (from the USA) in 1949 (based on the 300 H&H cartridge). It was for use in the Larsen M54J rifle. Norma produced the cartridge in 1953 (on a limited basis) for the the inventors in the USA market
and received permission to produce the cartridge
commercially in 1960.
In 1967 Norma changed the "INTERNAL" case
shape by reducing the case wall to increase the
powder capacity and renamed the cartridge the
"7x61 SUPER" (a/k/a 7x61 Magnum).
So technically the 7x61 S&H and 7x61 SUPER are different Cartridges
Production continued on the 7x61 Super by Norma until 1976 and resumed from 1989 to 1996.
To my knowledge it is no longer being produced;
if I am incorrect, please let me know. |
