OK....clarification time, please.
You are using Rainier. Are they copper plated or jacketed? (I don't use Rainier and so not sure if they offer both or not).
If they are plated, one doesn't normally load plated bullets to jacketed specs. The plated bullets I use from Berry Mfg. suggests loading them as light jacketed loads or regular lead loads. Rainier suggests using lead bullet data.
Do you have a reloading manual? If you don't, you need to invest in one, several is better, and do your research using them and powder manufacturer data. This gives you a wider assortment of bullet and powder combos.
Anyway, the first thing you need to do, IMHO, is to determine what bullet you are shooting and then go from there with load data for your Bullseye powder.