Have an opportunity to purchase a Winchester Model 70, wood stocked, in 223 WSSM caliber. This cartridge looks strange and has an extreme bottleneck shape. Like most calibers it has its fans and its detractors. From what I have read, it was developed by Winchester but has been discontinued since Browning took over. Concerns are that it is a real barrel burner, needs a new barrel after less than a thousand rounds, and is a pain to shoot as accuracy falls off after less than 10 rounds and then has to be cleaned. Ammo and brass hard to come by.
Proponents claim it is the fastest of the 22s and, when loaded down, throat errosion is not a problem. Seems counter intuitive to me to load down when speed is the objective!
Any thoughts or experience with this cartridge?
Proponents claim it is the fastest of the 22s and, when loaded down, throat errosion is not a problem. Seems counter intuitive to me to load down when speed is the objective!
Any thoughts or experience with this cartridge?




















































