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1:7 twist will shoot them perfectly fine, every rifle I have chambered in 5.56 has a 1:7 and I use higher grain

Yes absolutely! Higher grain run better in. a1:7 barrel at least from my experience

it will work fine

Hi Jason and welcome. 1 in 7 will be ideal for 77gr bullet stabilization. Cheers, stay safe and enjoy. Plenty of details here : https://www.ballisticadvantage.com/blog/ar-15-barrel-twist-rate-explained/#:~:text=If%20shooting%20ammo%20on%20the,twist%20rate%20more%20than%20weight.