Try the streamline 9.56, I think you may see 12s from 11.3!

I’ve checked the weights, they ranged from 9.4-9.6 on my scales, I have separated some out and re-tested putting the weighed figures into the chrono and it’s still 12 to 12.3, I’m stumped! I called Air Arms and asked to speak to a tech, basically his answer was don’t use them (very technical answer ...

Thanks Tony, that theory seems to ring true with my testing, yes, the qys streamline are 4.5, I really want to stick with them so I’ll get the power turned down a touch...

The rifle is just a month old, I purchased it from my local RFD who chrono’d it while I was there and it averaged out at 11.2ftlb - happy days! After a few days I did a full shot string from 190bar, 90 shots (jsb exact) before it started to fall, averaged out at 11.3 with a spread of only 18fps - ev...