Thanks for the link. I think I've purchased from them before. I was going to buy some but unfortunately they are out of stock.Natchez has them on sale for $19.99......
https://www.natchezss.com/shooting/magazines.html#brand=200919&dir=asc&istock=202997&order=position
I hear that the best place is usually in the gun. But I may have the mechanics a little off.