I recently bought a secondhand Webley Raider in .177 calibre. I was happy with it until I chronographed it on Monday night. Using AA Field in 4.52mm, I was getting readings between 675 and 683 fps. This calculates out at a most unimpressive 8.5 ft/lbs (ish) !

Would one of you technical chaps send me a PM with some instruction on how to increase the power to 11-11.5 ft/lbs?

I'd be really grateful as it's no good for HFT as it is.

Thanks in advance.