Took the Henry out yesterday and fired off another 3 mags. Worked perfect with factory. Reloads worked fine, but stayed open with one left in magazine. I'll try it again, and will pay attention which magazine did that, then try reloads in another mag to see if it does the same.
These are Magpul GL9's. Installed a Barska red dot. Except for me wobbling around like I was firing off a race horse at full speed, I was impressed with the shot placement (fancy, evasive way of saying accuracy). While not likely Olympic material, I think the Henry will suit me just fine.