If you are fortunate enough to live near OMB Guns, they have SS198LF on the shelf when it's in stock.Only the Fiochi rounds are found on actual physical LGS store shelves. These Fiochi rounds are:
FNH SS197SR (these are all Fiochi loaded)
Federal (American Eagle) AE5728A TMJ(or FMJ) (also loaded by Fiochi).
Any other 5.7x28 loadings are only available online.
No actual physical store carries any other loading a than the Fiochi ones (unless you are lucky enough to live close to ammo sellers who sell other loadings online)
just like what Trent said below: faster projectile by lighter projectile weight and possibly also a hotter powder loading.New to the FiveSeven, just wondering, after reading here seams that no one likes the SS197SR 40 gr Vmax, just wondering why? What makes the others better?
The ss195 and 198 have higher velocity due to lower bullet weight and a hotter powder charge. Additionally they tumble rather than mushroom or whatever vmax does (fragment?).