This is the problem. Get out and train with that 9mm. Ditch the 5.7.I understand that the ballistics are everyone's main concern but I have probably shot 700-800 rounds of 9mm my whole life, I feel like the accuracy of the 5.7 and the 3 extra rounds might help compensate for my current lack of experience shooting
And you can train and be proficient a LOT cheaper with the 9. A case of 9mm ball is under $300. How much is 1,000 rounds of the cheapest 5.7?
Practice and proficiency is key. Just running a box of ammo through the gun once isn’t enough. But that’s what’s going to happen if you decide to carry a niche expensive round gun.