If you want to be authentic
I saw many soldiers who's weapon was the Garand. They would use bandoleers and then hang clips off any place they would fit; straps of web gear, shirt pocket flaps, the shirt itself at the button area, on the rifle sling. They go on like a clothes pin. They only used the cartridge belt pouches when everything else was gone. I'd just sling a couple of bandoleers over my shoulder, put the empty clips back in the pouches. That 7 clips per bandoleer. If you are going to wear a cartridge belt, make sure to use suspenders, that's the way it is done. They are an easy way to carry the weight. Everybody used the suspenders.
That belt looks like what we were wearing in Vietnam in 66-67
I had a bunch of the buckles in my hold baggage (then threw them away).