You've got a 3.5" tall playing card on there for a size reference. Your far right and far left shots are further away from each other than the height of the card, by what seems to be about double. So a 6.5-7inch group @ 200 making that a 3.1-3.3moa group. 15 shots though, which is a plus.
4/15 sounds occasional to me. The 4 that touched the card aren't your average accuracy, they're the outliers. To do that 2 dozen times you'd need to take 90 shots, assuming a continued 4/15 hit rate (4/15 = 24/90). You're missing a lot more than you're hitting. You've chosen a difficult target, I'll give ya that.
Next time you're at the range, try shooting 5 consecutive groups of 5 shots each, or even 25 shots in a row, trying to center a bull, and then share that. 100 or 200 yards, whichever you prefer.