Horse biting bit

My horse everytime I ride him after about an hr or so, maybe an hr and between 10-15 mins, he starts biting on the bit and wanting to lower his head almost to the ground. He has always did this and I'm thinking he just wants to find an excuse for me to take him home, but 9 months after having him and him knowing I'm not giving in to him, he still does it. Just wondering what else if anything might be wrong. I looked in his mouth yesterday after riding to see if I saw any signs that the bit might be hurting him or something. When I had his feet done last time the guy said his teeth werent perfect but that as far as riding and bits he should be fine. The bit I use right now is the one with shanks, almost looks like a tom thumb but it has the shanks on each side, shanks then like a D. Almost a D with the shank being on the straight side of the D.

It could be he's evading the bit. When a horse started doing this I'd brace one rein against the front of the saddle and leave the other rather loose, sometimes switching sides. This way he punishes himself which is a better teacher than trying to pull his head up. Brace before he gets his nose past his knees.

Thanks for the info saddlebag, I will keep that in mind for next time. I wonder if I will be able to do that if I have the reins tied though?

Mine does something like this, I call it chomping on the bit though because it's essentially what she is doing, but she lays on the reins and tries to pull them out of my hand while she's doing it. If I let go of her, her head will go straight to the ground, so sounds like yours may be doing something similar? With my mare, it's because she is stressed, I call it "brain fried", and it happens when I ask a little too much of her. Usually if she starts doing this, I'll back up a step and work on some basics that she knows really well until she chills out.

You say it occurs about an hour into your ride, how much contact is the horse on when you ride? Do you ride on a very loose rein, or with some contact?

Hey hoof, my pc is acting up at work and I can't click on the quote tag but I sort of start out riding with contact and lighten up about 30 mins into ride.

Hmm here's another thought...mine also tries this on trail if we're walking on GRASS, she's just trying to eat it Do you ride on trails where it's a manicured trail, like crushed limestone, or is it dirt/grass?

From what I recall I think he does it regardless . I think he is just trying to be slick but next time will find out for sure lol