I shoot a Remington as well, but a 20 gauge. I run a Carlson tss .555 and it does alright with LongBeard, federal 3rd degree and Apex TSS. I hate paying for the tss, but I also figure it’s more deadly and with more pellets, gives me wiggle room. If I’m not shooting #9tss, I prefer 6 over 5 or 4...