A Square are not in business anymore to the best of my knowledge, I think their ammo side was bought out by another manufacturer. They used to 'test' a lot of their ammo here in Zimbabwe in the early 90's. They made very good ammo but very 'blocky' rifles - they felt very cumbersome to the hand!! I used their ammo in my .458 Win mag and the felt recoil was remarkably higher than that of factory Federal Premium! I never did Crono it, but Art Alphin claimed that he made ammo to spec! If the original caliber spec called for 'X' velocity then that's what he gave you! I never had failure on any of my Elephant brain shots if that's any recommendation!