I have had issues with loading Rainier plated bullets. First and only bullets that I have ever had "wrinkle" when seated in a 9mm case.
As for ordering huge quantities of Rainier's just to get a good price, consider this as an alternative:
I buy cases of Montana Gold in 9mm (both 115gr and 124 gr) as well as 55gr FMJ-BT in .223 cal. Montana Gold pays the freight (and it really upsets the mailman when he has to deliver).
If a "Lead Safe" bullet is your concern consider the CMJ's which has a full jacket covering the base as well. On the issue of "Lead Safe" bullets, Rainier's have a lead core and I can assure you, when the bullet hits the backstop at the range there is still "Lead Everywhere" when the bullet breaks up.
As for "Copper Plate" versus jacketed bullets, copper plating is very soft and many experience more leading than with harder jacket material such as used by Montana Gold.
I don't work for them, make a comission, or otherwise promote their business. I just like their bullets, the prices, and the included shipping. Service is great too. Last order of one case was placed on a Tuesday and on Thursday afternoon the Postman was griping at my front door.