Im working on loads for my Browning A-bolt 243wssm Hunter version and have 90grn NOS BTs, 90grn Speer spitzers, and 85 grn NPs. I have had no probs with any of these loads. I started all the bullets as far out as possible and still fit into the clip
The gun shop near me that is aBrowning dealer has not had anyone with the probs you speak of, After reading your post I became concerned and gave them a call and started working loads on mine and have had zero issue's. The gun shop and the gunsmith havent heard any issues with this either.

I will post asap if I have any of the issues you have spoke of but so far so good.