Thanks for your input. It is interesting that after maxing out at 870fps I was discussing the airflow and the pellet probe design with a friend and here’s your post suggesting an angled port. Going to have a revised look at all this, after your pointer.

Yesterday I pulled out the .22 barrel after a few months to test the new 18.1gr so…Read more

Not sure if I should get the standard Ed scope for it or wait for smaller Ed scope when that’s ready for shipment. Standard may be too big for it and bag.

Going to shoot a few mags of these later today to confirm I’ve not botched it all up. fingers crossed…Read more

Maximum fps is 872 and and ES is 7fps in 36 shots which was quite surprising. But groups are staggered 1″ at 25meters. Below 850fps there’s no group per se.

Perhaps the 18″ barrel is just not enough … it did shoot a pellet upon pellet for 3 shots but that was that hahaha

Maybe a…Read more

Time to get the dremmel and open the TP in very small increments. Thinking of making the TP hole kinda cone shaped so that it’s wider on the outside and inside remain the same and leave probe untouched. That should allow more airflow … theoretically.

I’ve set the regulator at 130bar, and can get the .25 JSB Kings 25.4gr up to 920+ easily. I’ll increase the pressure gradually to 150bar and check for the maximum possible speed of .22 Monsters without making any changes to the TP.

Been holding buying a 4mm dia acetal rod to push test the pellet but I think it’s time to get that…Read more

Left .30, middle .25 and right .22

I could get the .22 TP machined to match .25, then matching the valve exhaust port shouldn’t be an issue as you can see the .30 port is substantially bigger.

I think I should be okay as long as I widen the hole in the pellet probe to match the increased TP.

I’ll ping Ernest if he can chime in on this.