I've been using a Papa Dave gun cart for 16 years, 2025 will be 17 years, still running strong. It's durable, and lightweight. Easy to put together, and disassemble, I keep mine in the truck of my car.
Here's two photos, my finger is pointing to the area to pick-out the spring in one photo, and the other photo is my dental tool pulling the spring out.
I have a bandoleer as well, from Doc Noper, I have no movement issues with mine.
Have you discussed your issue with the maker of said bandoleer? Is it sized to you properly?
Reach out to Slippery Dick at https://slipperybullets.com/ he started casting 44.40 Big Loobs last year, if that's what you're looking for. Not sure if he got around to 38 cal snakebites, or the 45 cal Big Loob yet.