First, let me compliment you all on this great site. I discovered NitroExpress.com a couple months ago, and have enjoyed reading it. This is my first post.

I have read about the risk of retinal detachment with big bores, but until I read an old thread on this forum I thought it was just a myth, or an exaggerated way of saying "it kicks a lot"!

First question: are there any medical studies that have documented this? Anything I can link to?

Second question: What calibers are we talking about here? What is the threshold to cross before this becomes a concern? Is .375 H&H in the risk category or must one keep going higher before reaching the danger zone? I realize that in the absence of scientific studies, the answer will be imprecise and involve some estimation.

Thanks all.