I thought the same thing, caliber opinions, FNP opinions. or FNP in that caliber.I do not know if your looking for gun feed back or caliber. I have a XD thats 357sig and i bought a spare 40 barrel for it because you can shoot twice as much ammo for the price. 357sig is a little more flippy or snappy then 40 you can tell the difference when your shooting them. I only splurge for the 357 ammo if i want to show off and shoot long distances (100yrds) because its great for that. You can buy 40S&W and more places too just incase your in BF no where.