Jeff, As others have suggested I don't think you need to change anything. During it's life that gun had it share 2 3/4" shells through it. Those that know more about it than me can chime in, but the pressure increase of shooting 2 3/4" shells in in 2 5/8" chambers is not considered significant. Most would advise you still would want too shoot low pressure shells in 2 3/4". I would add though that 2 1/2" shells is a safe and prudent approach.
The good news is you already discovered RST shells. They have such a great variety. One of my favorites from them is their 3/4oz 12 gauge loads and you can also get paper hull shells from them which is just too cool. Try out their spreader loads which will help with your tight chokes. You may want to consider getting into reloading at some point as well. I dragged my feet on this forever, but now that I am set up I don't why I was so hesitant.
You didn't mention the gauge or any particulars about your gun. Please let us know and post some pictures.
Good luck with your first Parker!
|