Try Midsouth Shooters Supply. I just got 4 "sample" packs to try since I am just getting into reloading and did not want to buy too much of something.
Here is a link to one of their .308 sample packs: https://www.midsouthshooterssupply....-tail-hollow-point-shot-group-sample-20-count
Here is a link to one of their .223/.224 sample packs: https://www.midsouthshooterssupply....grain-premium-shot-group-sample-pack-30-count
Midsouth has great customer service and good prices.