.177 AA TX200 Pellet performance comparisons

Below is a photo illustrating the comparison between four different pellets, shooting 10 shot groups, out of my .177 AA TX200, at 18 yards, from my bench located within my indoor range. After installing the Vortek PG-2 Sho Tune Kit, and shooting several thousand shots, this rifle has really settled down and come into its own.

All of the groups shown were shot over a chronograph at one foot from the muzzle, with all of the pellets showing a maximum deviation from the 10 shot string average of 5 fps or less.

This rifle shows a definite preference for the AA 8.4 grain pellets, as I have duplicated this exercise a number of times, never without the same result.



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My TX200 with a modified Vortek kit (different spring) shoots JSB 8.44 grains like a shot gun. Move up to JSB 10.34 grainers and it is one hole at 40 yards. Just about 2 grains make a world of difference in this particular gun.

The 8.44's run at 860 FPS and the 10.34's are at 760. That may be a / the reason, I don't know, but I do know what works and will use the 10.34 pellets from now on.