The 174 SMK is an excellent projectile but a waste of money unless your rifle's barrel is new. The LE rifle was designed for flat base projectiles. Many won't stabilize boat tail projectiles and unfortunately, the most popular and cheapest PPU and S&B loaded ammo are all Mk.8z spec with boat tail projectiles. It's a shame no one offers a 174-grain equivalent projectile or even loaded ammo to Mk.7z spec. I reload 180 grain Sierra Pro Hunters which are about as good as it gets.