.25 cal here. It puts a smile on my face every time I shoot it. Has preformed flawlessly for the first 6,000 rounds.
Stock - 380mm 25.4gr 850fps Max.
700mm 25.4 995fps. 34gr 900fps.
Ported TP and probe - 380mm 25.4gr 890fps Max.(definitely wasting air)
700mm 25.4gr 1040fps. 34gr 940fps
Stock reg pressure was 150bar. I put a slug liner in the 700mm. Factory pellet liner didn’t shoot MKII’s the best which in all fairness it wasn’t designed for but I had no interest in shooting 25.4’s out of it. I currently have a nice tune for both barrels at 140bar.
380mm shooting 25.4’s at 855fps and the 700mm going 895fps with the 34gr MKII’s both on PW4. On Max I have room to shoot the 34gr up to 920fps.
Shot count in .25 is around 60-85 depending on how it’s tuned. I haven’t checked with the current tune but with the reg now at 140bar I’m sure it’s getting all of that.
I shoot it setup with the 380mm most of the time. Very good accuracy with the 25.4’s from 835-865fps. This short barrel gives up some power but will shoot 1” - 1 1/4” groups at 100yds
At 95yds 4 of 5 were 7/8”. I’m more than pleased with groups like that. Makes for a great compact small game gun.
I’m really hoping it will shoot light weight slugs. Pellet wise with the 380mm you pretty much have 1, which is fine it’s shoots them great. Mine prefers the Air Arms “die” of the 25.4’s. Perfect because they’re the cheapest as well.
The 700mm is pretty long. The new barrel system is pretty rigid but I’ve bumped the long barrel pretty decent twice and both times I did need to re-zero a little. It also droops a little with the FX chrony hanging off of it. The 380 is pretty rock solid.
With that said I certainly wouldn’t let o-rings scare me away from the Impact. I’ve got a buddy with a gen1 that bangs around on the back of a 4 wheeler daily and the guns been a super reliable work horse for him.
I knew going in I was giving up some power to the Impact I chose the Crown strictly because of the traditional gun style. I’m just not a bullpup guy. For around the same size you can have a shoot anything 700mm Impact or a power limited 380mm Crown.
I haven’t even got into slugs yet. With the 700mm I think this platform is going to still be limited to lighter slugs. Once you start getting into 36gr+ I doubt it will push them much over 900fps. This is where the new PP Impact will shine.
Really depends what you plan to do with it. I like to shoot both barrels so my main concern was finding a happy tune for both. I’m sure you could tear into it change the hammer weight, larger valve seat and crank it up to 160bar to shoot heavy slugs but I doubt the 380mm will be real happy with that set up.
So far this gun has exceeded my expectations and covers all my PCP needs. My only gripe would be having the ability to adjust the hammer spring with the stock on.