First two rounds feed reliably.

The third round will typically tip up and bind as it enters the chamfer at the chamber. When it does this, it often catches the last round and drags it along, causing a "traffic jam".

The last round usually takes a second short push to finish the chambering.

If I’m lazy on drawing the bolt, it will sometimes fail to strip the last round as well.

I'm thinking that it’s lip spacing issue, but not which way to adjust it and how far along the axis.

Sent an email to Savage: no reply