If they are the new USA Winchester subs, ignore anything being a problem except them. Absolute rubbish. The reason they aren't feeding is probably the rim is too thick on your batch. Do yourself a favour and buy some CCI.
There's a thread around here somewhere with several having issues with Winchester .22lr. USed to be good when it was made is Australia now it's dirty and greasy, inaccurate, and prone to misfires, feeding issues, and rim thickness variations.
Bookmarks