Yes, you need a springer. They will make you shoot your PCP's much more accurately. I spent the first 7 months of the year obsessively shooting springers 90% of the time. I would shoot them 3-4 times a week as an actual practice regimen. When I finally got it out of my system about 2 months ago and went back to my Field Target PCP, I could shoot it more accurately than I ever could before-better trigger control, less swaying/more steady, etc. A springer is about the best training gun you can have. Spending time shooting springers reminds me of the concept of wearing ankle weights and weight vests during basketball practice back in high school. It is much easier to run, jump, and move in general without the weights, when you are used to doing all that with the weights. Springers are almost like a deliberate handicap to improve your shooting. When you go back to shooting a recoil-less PCP, the difference is astounding, it feels much easier to place that pellet right where you want it and get the trigger to break at the perfect time in conjunction with you natural movement.
You might take a look at an HW50s. They are slightly bigger than the 30 and slightly more powerful to really reach out there (for a springer). I've been through a handful of springers, including two different specimens of the new FWB Sport and one of the the laminate stocked HW77k. Both of those guns are in the higher end, price-wise, of what you can spend on a springer. Neither of them held a candle to my little HW50s. I spent a considerable amount of time and money trying to make the 77k shoot like the 50s but with a little more juice. I finally got it to shoot very accurately, but it still wasn't as easily obtainable as it is with the 50s. Other than FWB 300s recoilless 10m guns, the HW50s is the only springer I kept, and it will stay that way for the foreseeable future. The 50s has a VERY quick "lock-time" due to a shorter stroke than most other HW guns. That quick lock-time makes it much less hold-sensitive, in my opinion. It also has the 26mm compression tube, which allows that short stroke to produce enough power to shoot accurately out to a decent distance.
I think the 30 is more of a youth-sized rifle and anything past about 30 yards is going to get pretty loopy.
I can occasionally shoot 3/4 inch groups at 55 yards with my 50s, mostly attributable to the gun's engineering as mentioned above.
