[lurkingknight]

the barrel length doesn't matter so much as the brand/line of barrel, good ones with better bore quality will get better results. prommy's are good in that they're probably the best barrel at the price point, beyond that is diminishing returns for the cost.

You can likely get about 200-230ft with a bit of lob with a 1.48J gun, I've made those shots before with my g36. How well you can do it and hit a target you're aiming at will depend on your air compression and the quality of install. If every shot that comes out of your gun is the exact same fps, then you'll get good results with the r-hop. If you haven't upgraded your air seal components and eliminated all the leaks, then you won't get all the performance out of the r-hop.

I've made many 70m shots which is 210ft-ish with my guns, but you're looking at maybe a 1 in 3 on target with the other 2 very close to target, at those ranges, it's a breeze or gust of wind that pushes it off. Even if it's passing from sunlit pavement to shaded grass, that will make the BB bend/lift/drop so you're talking shots that are going to start requiring a degree of luck beyond 60m.

The longest confirmed shots i've ever made with a 1.48J p90 was closer to 85m and I was shooting from an elevated position off a 2nd floor balcony.