We have about 11 more days of groudon
He has always been my fave legendary and one of my fav pokemon of all time with his design and power in the main series. However i was having immense difficulty catching a good one in pokemon go till today with this beast. Tm'ed him to ms/eq. Before this my best groudon was 2886. I catch at least 8or9 out of 10 groudons i see but every groudon above 2886 ran away from curved grb excellent/great throws! Honestly beggars belief, i had 2887 run, 2888, 3 2890s, one 2316. The 2316 was yesterday and when he fled after 6 excellents and 1 great throw i critical captured a 2267 groudon at the next raid -.- . Rng... haha! Well happy to finally get a good one just before kyogre comes. Any of you guys having groudon troubles or have you guys all managed to get high iv specimens?

Answers
Ahhh that explains! Well for me i want one ground groudon and one w ms/solar cos of kyogre:) and i highly doubt with my luck I'd find a 100%. Fact is i got lucky with the groudon today with only 7 balls... earlier i had 7 str8 excellent grb curved throws and a 2297cp fled?. If this happened to the 2323 I'd have exploded...
Groudon is by far the worst scoring legendary for me for the amount of attempts I've had and the much enhanced throwing skill I've acquired since the legendary birds era (oh god, some of my first articuno throws were terrible)
My best is a 15/12/14 (91%) right now, non weather boosted. That's a pretty good score for any book but I've not even encountered a higher one, let alone capture one. My best Ho-Oh is a 91 as well but it was in a shorter time frame and to be honest, who really wants a ho-oh? lol
Unless I get something amazing in the next week, I'll be powering up a level 25 Groudon with 15a/12d/15s (93%).
My next best IV is 14a/15d/13s (93%)... which oddly enough I have caught at both level 20 and level 25.
I am surprised I have yet to see a question about powering up a level 20 vs 25 raid catch.
I agree with you man. Today i had 7 balls to catch groudon and i messed up the first throw timing cos i didnt start the toss far enough into his attack animation. 6 balls left. I caught him when i had 2 or 3 balls left thankfully. With groudon u gotta GRB every throw i feel haha. Even then he can escape. The 2316 ran away with 11 balls 8 excellent 3 great. Go figure... we take our luck where we can get it i guess
Proud iwner of this one, maxed in first week of his appearance, 15-10-15(89 iv).
Part of every groudon raid and gym tear down from then.
I have a 93 one cought seberal days after (but not necessary better, it lacks on stamina IV) and missed a 98 iv one the day after I maxed the above one :).
I will most probably max another one for kyogre, worst case the 93 iv one. I had second thougts but kyogre loosing dragon tail make me decide Groudon will be the one with 2 maxed ones. Raikou will also get 2 power up but one only at 30 or so.