Tune-up for a Gamo Whisper G2 .22?

Well I have one of those in .177 and I try to use heavy pellets to keep it from shooting the pellets too fast? The speeds put on air gun boxes are just to get people to buy them. It does help them if you "smooth" out the shot cycle. Its simple to make a air gun spring compressor and you can see many of those on youtube, and you can make sure that the interior of the rifle is greased the right amount(not going into everything I do when I have a rifle apart but there are many videos on youtube about what to do when you break down your gamo). My gamo is from 2012 and it got me back into shooting air guns. Mine is strangely accurate out to about 35 yards, and even had the stock scope on it until I stuck an extra hawke scope I had on it. I did buy one of the nitro ram conversion kits a year or so ago but since the rifle shoots fine its still waiting to be installed.


But back to your question about speeding up your pellets? Use lighter pellets and or break down your rifle and service it? But most will tell you to find the pellets that shoot the best in your rifle and don't worry about the speed.

I'm gonna co-sign with Goodtogo !! Excellent advice , speed is actually something a lot of airgun guys with WAY more expertise than I have dial it back on some . Most of these guys have a really good feel for where a pellet normally shoots the most accurate. If rather lob in a hit , than a screaming miss any day .

I'd suggest that if you're gun is shooting accurately to just leave it alone. Your gun (if I have the right model) is rated at 900 FPS with alloy pellets, which translates to a likely 700+ FPS (or so) with average 14-15gr lead (I'm probably a little conservative in my estimate). As long as your gun is functioning as specified, there's not too much you can do to make "big" gains (you could rebuild, relube, lap tight spots out of the barrel, etc for small gains in velocity, and big gains in smoothing the action). If you run it over a Chrony and find it shooting especially slow, or with really big extreme spread numbers, and/or accuracy is really bad, a rebuild would likely restore it to full power. If you NEED more power than that (already pretty powerful) gun puts out, you may want to start looking into PCPs. The Discovery is a decent entry level PCP, can be pretty easily charged with a hand pump, and doesn't break the bank. Mine shoots 15.89 JSBs in the (middle, if memory serves) 800 FPS range.