For me it's my Raw and the 3 piece adjustable pellet probe. Machined to fit perfectly. No breech orings to mess with. They always blow out or get destroyed at the wrong time and sometimes a bitch to replace if you have a spare. Let's here yours.
This seem to be the hot ticket for Br at the moment. Keep in mind expensive equipment alone will not get you there. It's the nut behine the trigger that count.
Welcome, everything you want airgun related can be found here. I would suggest you reread the runs again for a firm understanding of what is tolerated and you will be fine. Enjoy the forum.