If I had to choose...as a shooter...

1) Garandicon M1D without the foghorn on the front. (Note: think about photos you have seen of space rockets, think of Venturi tubes... by reducing gas velocity, those things actually increase the back pressure = recoil, whatever they may do for the flash).

2) Finnishicon Mosin - generally the most accurate of the Mosin-Nagant family, as the Finns selected out what shot well, mixing and matching if necessary.

The rest are (for me) of little interest as shooters. Let the others have them!