Benjamin Marauder 25 to Hatsan Carnivore 30

A neighbor decided to downgrade his Carnivore 30 to a 25 caliber. Instead of selling it and buying a 25, we agreed to a trade for one of my Benjamin Marauder 25. The 30 is stock, only 2 weeks old with not even a whole tin thru it (maybe 30 pellets at most). He did warn me that although it say "QE" this 30 is not backyard friendly. I took it out yesterday for a chrony test and... First notice was, yup this thing has a bit more bark to the 25s as a big bore should! Anyway, I'll address quieting it down later. On to the chrony results filled to 200 bar, goal of 14 shots (2 clips), using the JSB 45gr

1st string: Stock
Hi 879
Lo 836
Avg 860 
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Thank you Rick on how to make power adjustments

2nd string: Increased preload: 
Hi 898
Lo 873
Avg 886
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This is my first Big Bore and certainly impressed with the power it comes with stock. I have seen and read what potential this gun can become but first, will see how it is with targets when my scope rings, and electronic ear muffs for the wifey arrive. Was it worth the trade? Well, I'm starting a new page in my log. So far so good. 



 
I own both a .25 Marauder and .30 Carnivore. The Carnivore is definitely louder, and on mine I usually stretch it out to 21 shots. It also goes out every time I go out pesting or hunting even if it doesn't leave the Jeep, and although its not backyard friendly it is still quiet enough to do some night hunting for varmints like Raccoon, Skunk, and Possum.