Hey there @POTATOGAMER! I came to let you know the blend per bone node was what you had needed, but it seems you’d already started down the correct path. You may need to have less weight on the blend itself, or start at a lower bone in the chain. If this is only going to be first person and singleplayer, you could in fact start much further down.
As a note, the jagged nature is probably from the distance where the bone wants to be in the original animation and where it intends to be and the time it’s blending is very quick. Tinkering with the blend weights and blend time should help a bit.