expect from a Gamo Shadow 1000? How long before I can expect those groups?. Thanks!

Shoot, Load, Repeat, Shoot, Load...

first of all, an inaccurate gun with a good shooting is the same as an bad shooter with an accurate gun... so you have to perfect your technique no matter how accurate your rifle is to get the most out of it.

Gamos tend to be inaccurate in the first place, some stay that way, some get better as they break in... if your gun breaks in well, then you should be able to get half inch groups at 20 yards... and maybe 3/4 inch groups at 30 yards...  I used to be able to do that with my gamo s1k, but that gun was a gem ever since I took it out of the box.

Let me give you a straight answer: shoot and find out... talk to guys that shoot springers and ask about technique... I think there are a few... I just hold the rifle as lightly as possible and let it do its stuff, but you should experiment with yours to get the best result.

 

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I don't really bother with grouping as I use my S1K for FT Piston class. After fixing the trigger problem and putting 2000 rounds through it I was getting 1/2" to 3/4" groups of 5 at 30 yards on a good day. I can hit a 3/4" kill zone on a field target out to 35 yards pretty regularly so it works for my needs as I only need 1 hit per target. At 50-55 yards a 1-1/2" KZ is possible. The gun is much more accurate than I am, with just a lube tune and some polishing of sliding surfaces on the trigger assembly and spring ends, then sleeving the guide and tophat with polyolefin shrink tube for a snug fit. I also packed a 10 ounce weight inside the butt with memoru foam for better balance. Shoots 7.9 CPL's at 855 fps and 8.44 JSB Exacts 4.53 at 835 fps. The JSB's are slightly more accurate over 40 yards. I know have about 4500 rounds through the gun. I've heard a good protune can get rid of a lot of the twang and recoil, but what I did reduced it a bunch while helping accuracy.

RicG