The 77JC is not a K47 type capsule, you can see the hole patternI wanted to use and K-47 too (probably a 77jc, as kingkorg said it's one of the best cheap AliExpress K-47 capsules)
But in a headbasket similar to F22 it sounds good, with a flat circuit it seemed to me almost like a smile curve.It depends a lot on the positioning of the capsule in the headbasket