New to reloading and have questions

Well I finally talked my dad in to reloading we bought a rcbs rock chucker supreme master kit at cabelas last week the press was in the bargain cave and the powder despencer was broken but we were able to switch them out there and we got all the shell plates that we need to do the loads that we want and also picked up full length sizing die sets for 300 win mag and 223 along with a nosler number seven reloading book.
I've read through the rifle section in the speer reloading manual.

We are going to reload 223, 300 win mag, 7mm wby mag, 44 rem mag, 40 s&w, and 357 mag for know and might add 45 acp, 9 mm, 380, and 30-06 later

So starting questions

Powder despencer will not adjust the powder charge on either the gauge screw or the hex connected to it and also the black circle has play side to side any help on that

We can get the rcbs chargemaster for 290$ and I think we should get it for safety and accuracy for 300 win loads.

Should we get a stainless tumbler for cleaning brass I know the entail start up is expensive but believe the brass gets cleaner faster and the pins last for ever.

We well for the moment be reloading our own once fired brass to reload do we need a case trimmer?

We are getting the 500 speer bullets from the rcbs promo and are getting the 200 gr 44s any negatives about the bullets.

Any thing else we need?

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