I guess I don't understand why someone would say "Don't shoot slugs through it". I have a Remington model 11, which is almost identical the the A5, and I have a polychoke on my barrel as well. I have shot Remington, Brenneke, Federal, and Winchester slugs through it without incident.
As far as accuracy, The Brennekes and Winchesters were the most accurate.....Federals did the worst, accuracy wise.

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