Tuning Shot a 45 texan today impressed

I lightened the trigger pull on it by changing out some springs and polished trigger and sear and got to shoot a couple 350 gr hollow points over the Chrono they were 852 and 825 for the first to shots with 3600 fill is it possible to fill texan to 4500 what has to be changed

I believe that a carbon fiber bottle with a TX2 valve is necessary to install in order to fill a Texan to 4500 psi. I stand corrected. 


Here’s a product link https://www.airforceairguns.com/product-p/u2090.htm

Link to Airforce manual. https://www.airforceairguns.com/v/vspfiles/assets/manuals/TexanManual0820.pdf Pg 5 specifies that the max fill pressure is 250 bar as @mtnGhost suggests.