I've got the JW-27, not the same rifle but as far as I know they both have similar internals (if you compare pics of the two side-by-side you'll see what I mean, especially the bolt & reciever assembly). I've found the same thing as happydude, mine doesn't like hollowpoint ammo and does best w/jacketed round-nose high velocity (1" groups w/CCI ammo offhand, around 3" groups w/Winchester SuperX hollowpoints). I find the workmanship extremely rough, and the stock and forearm look like they came from the dollar store until you strip the 1/4" coat of drippy lacquer and sewage-brown stain off. The bolt handle also wiggles, and for the first 500 rounds it felt like there was sand in the action. Overall, it's a shooter, I'm pretty happy with it. I can beat it up a bit, not clean it for 1000 rounds or so and it just keeps running, it's great. If you do get one, get about 3 or 4 extra mags for it, the 5-round mags are a pain to load and the fun is over way too soon. Good luck!