Actually the Best 2nd member of the arsenal would be,Alot of Trap/Skeet time with your 870!Also practice with a few light-load slugs, though not normally accurate past 50yds.,because of the smooth-bore,They are quite capable rounds,that can be utilized in an 870,should you need it.The pellet rifle is not going to prepare you,for the use of a Rem.-870,even with 9&1/2 shot, the 870 is going to pop your chops,the 1st 5 rds. or so.Good Luck with your Endeavours!