you have a lot of pellets. Another tin of 500 JSB Exacts wouldn't hurt
I usually have 1,500 laying around just in case there is an invasion of tree rats one day
BTW, if you 're going to do it, buy the 500ct tins of the Exact Jumbos. It's a much better buy than if you bought the 250 tins.
Now that I have shot over 1,000 pellets with my 350 without a scope, I think it was well worth it. Everyone should learn how to shoot their springer well on open sights before mounting a scope, even if it's 8 or 10yds indoors. I started out with 6yds until I could make same-hole shots over & over. Then I moved it out to 10yds until the majority of the groups were 3/8" CTC, and the last ~500 shots have been at just under 15yds, almost the entire length of the floor downstairs. For anything over 10yds, you 'll have to use targets with oversized bullseyes, at least 3/4" like the ones I use, or 1" diameter which are easier to see, especially when they 're all black. You can find them at various web sites and print them out. I then use my binaculars without getting up to see where my shot landed, especially when the center bullseye is black. It 's hard to see the POI. I have taken over 1 dozen squirrels with open sights from 18 to 35yds out, the majority >25.