You may want to verify your scale's accuracy!
Try checking with another scale or check weights!~
My books say that load is within proper limits so either the charge weight is wrong because of the scale is off or the powder is not correct! I have read that the G36 factory barrel has poor case support. But the 45ACP is a lower pressure round!
Another thing to check is the recoil spring rate and slide to barrel lock up! Is the load exceeding the lock up of your gun?