got a Jap lt-20 with an I.C. choked barrel. I have the rings set for light loads, but the cheap 7/8 oz. loads don't cycle reliability. With the 1 oz. loads it works perfect.

At what point do i need to which the rings to the heavy loads? and how heavy can i go with the the rings on light loads?

thanks

I’m assuming you have this. p.9

https://www.browning.com/content/dam/browning/support/owners-manuals/auto5-light-om-s.pdf

I have 2 copies of the manual for the Browning A5 (light twelve) for the 2&3/4". Are you in need of a copy?

assumption is wrong, but i think i understand now

Lubrication of the rings and magazine tube matters.

Bobby, first double check the orientation of both rings per diagram. It's strangely not all that intuitive. Then, it's about being clean and lubed. Tip: for light loads, while a light coat of synthetic wiped off to just damp is nice, but a treatment with hornady one-shot dry lube is uber. Almost too uber.