I did read that the weight should not go below a certain number for reliability but can’t recall the number. I think it was on the assra forum.
For answers to questions like this I would highly recommend going to the ASSRA site and sign on. There are a bunch of single shot gunsmiths who hang out there. While the main thrust is toward traditional vintage American single shot rifles, there's also quite a lot of "modern" stuff bandied about also.
