Jonathon Is there a reason that a finished meat stick would have a slightly gritty texture?

Thanks for any insight you may have.

Jonathon Thanks for the quick response. I am making my own seasoning and there are some flavors used in it as well. The composition of 1 lb is roughly:
70% Beef (80/20)
15% Pork (70/30)
Excalibur Sure Gel (used at recommended level)
Prague powder (used at recommended level)
4% seasoning and flavor
1 Tbsp Worcestershire sauce
These ingredients were mixed in a stand mixer for 10 minutes and Encapsulated Citric added at the last second of mixing
They were stuffed into Walton’s 16mm smoked collagen casings

Thanks again for any insight you may have!