Hi, I am considering buying the Mossberg 500 shotgun combo that comes with an 18.5" and a 28" barrel from Big 5. I noticed that the 28" barrel does not have threads for choke tubes. I was wondering how much you guys change your chokes? I am probably going to shoot targets and clays with the 28", do I need a choke compatible barrel?
Also, on another note, what is the difference between 9, 8, and 7.5 shot? What do the numbers represent and which one is bigger? Thanks
Also, on another note, what is the difference between 9, 8, and 7.5 shot? What do the numbers represent and which one is bigger? Thanks

It works good for the up close clays that I shoot out in the desert with buddies. Shooting on a real courses at a range I would most likely use a Mod.
but that's my biased opinion.
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