Hello friend, I am from Cochabamba - Bolivia, and I have a fx impact Mk2 5.5 of 700 mm power plenum, power block I changed the spring to huma I changed the hammer to tungsten and the regulator is at 85 bars and the jsb pellets are 18.13 maximum It gives me 850 fps, what do you think could be the problem, I don't know if you can help me please. THANK YOU. 
Pwede kahit anong barrel ang gagamitin. Sa pellets lang medyo may rules. For local pellet category dito sa amin Astro, Meteor, Silver Streak lang ang pwede. Kung WRABF rules JSB, AA at H&N lng ang pwede.
@MongtoLagula as of now ang mga barrel na nagchachampion dito is FX, NB at Lothar Walther. Magtatanong ako sa mga next competitions kung ano ang mga barrel na ginagamit para may idea tayo
Halos pareho sila ng design/built ng GXSun Tank 300... Ndi ko lang alam kung sino sa Keso at Gxsun ang nauna.... Nyway, maganda naman pareho, astig..mamaw..
Nagsisimula na naman magbuild up laman ng lamesa sir! At pansin k nagreklamo n cguro ung kapitbahay mo kc natagos ng pellet s pader! Hehehehe! Happy shooting!
