I will give the #7's through the .665 a try. My Remington is also 23"
My 28" Benelli shot the #7's today putting 275 in 10" @ 40 yds. Thats with a Primos Tightwad .655 don't overlook this cheap little choke, they'll shoot. Today was 75 degrees cloudy, and 60% humidity, I'd bet it will go over 300 with a deep cleaning and less humidity.