[Mr. X]

Hi Mishu, Are you certain they are 16mm rubbers? If the ad says 20mm & they are particularly long, I would check in case it is just the long gun making them seem smaller.

If you search the forum for something like "rubber chart" & perhaps "Rob Allen"/"Rabitech" you will find charts with recommended band lengths (the length of the entire rubber, no including wishbone) for various barrel lengths. They've been posted numerous times (Adrenaline's website usually has the Rabitech chart). Might be worth trying them at the current length before shortening, to see how you get on loading them. Loading might be more of an issue than lack of power with 130cm gun.

Look forward to hearing of your adventures with the 130cm gun.