The Maglula Uplula is your friend. Once you get the mag loaded let it set for a while and then go shoot. The mags will get easier to load the more they are used. https://www.maglula.com/product/uplula/
Same problem with my 9mm Wonder if it is because they are 10 round mags for state mag capacity issues. But maybe it's a manufacturing trade off. Harder to load but more reliable?