Hi everyone, just purchased a Ross MkII** Target rifle. The gun is in excellent condition and visually mechanically perfect. My problem is when opening the bolt, the lugs rotate, and just before they clear the locking surface, the bolt seizes up and take an extremely hard pull or a mallet tap to open.

The bolt is fine when already cocked, it is only when recocking that it experiences this. When already cocked, if I am not quick with the draw on the bolt, it will stop and stick in the same spot, but not nearly as bad.

Is this a problem with the lug interface on the sloped surfaces? Do I need to slightly round off a corner? Could this be a problem with the trigger mechanism and the sear reset?

The gun is beautiful and I would love to start throwing together some competitive groups with it, if only I could get it open after firing!
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