Received the B30 tonight. Looks good so far...the stock reminds me of the stocks on the B50. Same type grain and stain. Bluing looks pretty good. A little light compared to German/English guns, but not bad. It has a bluing instead of the parkerized finish on the B21. Nice safety, good looks. I only had time to mount a scope and put a few pellets through it, but it was dark, so I couldn't site in or check for accuracy. Son of a gun hits awfully hard though. Feels like a ball peen hammer hitting an anvil. Sunk a Beeman Field Target special so far into a 4X4, that I can't see it. Cocking isn't bad. About same as the B21 without using the extension. A tad rough, as expected. Just Chrony'd it. It is shooting 710fps with Beeman Field Target Specials in .22 caliber (a 14.6grain pellet) for a total of 16.8 fpe. I was hoping for more velocity, at least 750. The next day during testing groups, I was getting about 3/4 - 1" groups. I had some flyers in there that spread the groups out a bit more, but it wasn't bad. I think this is a prime candidate for Charlie the Tuner...
On some other notes,
1. The instruction booklet that came with it is just like the one for the B21, even has a pic of a B21 on the cover.
2. The trigger is identical to the B21.
3. It probably is the same as a B21/B22 except for 5" shorter on the barrel, different stock, and bluing instead of Parkerizing.
However, the build quality might be better as the two B21/B22's I have previously owned had a lot of twang, whereas this B30 has NO twang in it at all when I shoot it. Sounds solid when fired, but feels like steel hitting steel. Pretty harsh sounding. Will send to Charliedatuna for a tune.

UPDATE: Here is what Charliedatuna (Bob Werner) had to say after tearing it apart and tuning it...(long)
 

The B-30 is almost identical to the B-21. I do think because they shortened the barrel that it's the reason for the lower velocity. The spring is identical to the B-21 and the Maccari GSI is a good match for it as well as the Large Apex.

The gun, like the B-21, was full of rusty components and pretty dry inside with a lot of crud in front of the piston and they sometimes have a pretty rough compression chamber as did this one but it did clean up pretty well.

The triggers as you well know is the least desirable part of the gun and most people don’t even want to take them apart. It has about 21-22 parts in it and they are always rusty and very poorly machined/stamped and are very hard to make into a good trigger. Seven to eight pound trigger pull is quite common prior to any work being done on them. This one was exceptionally bad as sometimes it had as much as almost nine pounds down to a little less than 7 pounds which was pretty strange. I did find the reason for that though when I tore it apart. It had a real rough and protruding piece of stamping
on one of the locking lugs that I was able to clean up. I also found a broken detent ball spring for the safety that I replaced.

I wire brushed all of the parts to remove the rust, then removed as much surface as was necessary on all contact points as well as polished them up as much as possible. I was careful not to go too far and not change any of the profiles. I then reinstalled it and checked it again. The results were that the trigger pull was constant and reduced by about one third to about 4.5 lbs. A long way from what I would like but a big improvement.

The trigger pull and release can be reduced and improved considerably by replacing the two adjusting screws with ones just a bit longer. Maybe 1/16 to 3/32’s longer. The Chinese started using a shorter screw a couple of years ago because people were improperly adjusting them and made them dangerous and very unpredictable. I started to use a little longer screw in them but had problems with customers adjusting them and doing the same thing. I stopped doing it because of liability reasons. I did not do yours either but if you wish to do so, you can pull one out and take it to a hardware store and match one up but just a little longer. It’s very simple to do. I used the hex head screws. I was going to send a couple along with the gun for you but didn’t have any left. Sorry… I did attach an adjustment guide that will help in setting it up if you elect to install the new screw(s).

I machined a Delrin spring guide and hand fitted the last three thousandths for a very good fit.

I also cleaned up and polished the ends on the GSI. I initially added a little weight to the piston but it made it shoot a lot harsher so I removed the weight and installed a polished stainless washer into the bottom of the piston to act as a thrust bearing for the GSI spring to set on and that helped a bunch.

The gun itself feels real good with a lot less torque and smoother cocking and a lot less recoil. The velocity improved somewhat, about 30 fps, and I would expect it to come up even more as the seal wears into the compression chamber.

That's kind of it in a nutshell.

UPDATE: Review Post-Tuned

Wow, fast turn around Charlie! Just got the B30 back. Charlie didn't have it very long and he communicated nicely through the process. As soon as I got it I mounted a new Tasco Airgun Scope 3-9X32 with AO and target turrets on it. I took the chrony, predator pellets, Eun Jin pellets, Gamo hunters, and some field target specials outside. I had to shoot it first just to see how it felt. I was concentrating on the trigger pull more than anything, so I didn't even notice till after the next shot that the recoil was so mild. Just the standard "thunk". Very smooth and no spring twist at all. At least that's what if felt like. David McMillan was over here, so he shot it. I said "what do you think?" He said "Great gun, smooth, not harsh and no twang." I'm pretty sure he wants one now :) So I set up the chrony and ran FTS through. 740fps average with very little variance in velocities. Nice. Gamo hunters were 730 avg., Eun Jin (very, very heavy) went 466 fps. That surprised me that I got that much out of them. I felt the spring really take a nose dive on those, so that's the end of shooting those babies. The Predators shot 707 average. Now to shoot some groups.

Here are the two groups I shot. The FTS were 6 shots, and the JSB Predators were 6 shots. The FTS held very tight. Most shots went into the same hole, but had 1 flyer (my fault). I shot sitting offhand for these. The Predators grouped a bit larger, but not bad. Considering the results you get from them on vermin, I just might have to get some. You can still cover both groups with a dime. Keep in mind that I shot a lot more pellets than just 6. I had a sight in target from earlier to get the scope set. I put about 30 pellets in it then shot groups on that paper with the same results as above. All the shots were off-hand at 13yards in my back yard. As stated earlier, most of the shots just widen the shot before it (on FTS).
The trigger is much better than before. Short first stage, short second stage. Charlie gave me a 4lbs trigger, but sent instructions on replacing the two existing trigger adjustment screws with longer ones to get it even better. I'll probably do that, but I really don't want it much lighter since this gun will only be used for hunting pests.
Right now, the B30 is smokin a bit out the barrel after shots, but Charlie sent a good instruction sheet explaining that, about the lubes creeping forward for a bit. He also mentioned that when the seal set's in good, I may gain, up to, an additional 3% on velocity. This is the hottest firing .22 I have had to date and was mainly looking for something over 700fps, preferably 750. So it fit's that bill even if it lost or gained any additional velocity.

Well, that's it. I now have the .22 hunter I have been wanting for quite sometime. I'll put a sling on it, pellet holder and call it good. Now I gotta baptize it in some Jack Rabbit blood.

Recommendation - Get one, get it tuned by Charlie and go get some vermin :)

Reviewed by Robert Fischer