Took delivery of a .25 AEA Challenger Pro a couple of weeks ago. Rifle is powerful. Pellets at 1100 fps. Tried some pellets and a couple of slugs, with just average results. Then I got my shipment of AEA slugs. 49.2. This rifle and these slugs are amazing. 1” groups at 50 and 75, 1 1/2 inch at 100. They leaving barrel at 955 fps. That real close to 100 fpe. All this from a .25. This rifle loves slugs. Got rifle and slugs from Utah Air Rifles. Dealt with Zach, a very helpful and pleasant salesman. Looking forward to seeing how far these will perform at long distances.