Thread: BSA Ralock - An interesting old semi auto .22

Originally Posted by Shearer

Interesting what you say about losing 80fps with the barrel chop. I have had a thread up here about velocity loss in .22lr but am getting a bit of conflicting info. From what you say that would put standard velocity ammo below sos?

Yep definitely below SOS, The ammo in the video was CCI Standard and it runs in the mid 900s through this. From what I understand 22lr normally reaches max velocity by 16" so it does start to drop off below that, but this might not be a good example to base this off as the 4 land rifling probably has less drag than a standard barrel!