I hqce stripped clips for my Springfield M1A but, I can’t even feed 5rounds into the mag without the handy tool for breaking down my gun.
I tried over and over but gave up. You need some mists to fill an inserted mag off stripped clips.
I have loaded magazines in an M14 with the stripper clips. Sometimes it was difficult. There is an adapter to load the magazines directly and not use the device on the gun but you have to outsmart it. There is a tap on the clips you need to bend back out of the way before you insert it into the adapter. I would have hated to reload magazines in combat. The M1 Garand at least came with bandoleers with the clips loaded. You had to watch your thumb when inserting them though.