Thread: Subsonic 22lr going supersonic?

Originally Posted by JRW87

Its also 37.5gr and 1050fps which may also explain why I think the CCI is also generally slightly louder pushing a 40gr to 1050fps? I will have to load a mag up with most and do a test next weekend.

The Kilwell Whispers were 37.5gr but I think now they (ah Winchester) have changed the brew, and the packet colour, to 40gr subs. I am told they don't shoot as well as the old ones. I managed to pick up 2 bricks of the old ones as they shoot extremely well in my Marlin.