Do what dirt farmer recommended but go easy. A center feed follower works well with the WSMs and might for the 284 based cartridges. PT&G and others make them.

I also polish all the contact surfaces it usually smooths the feeding up.

"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli