Credit score didn’t drop much when new credit card reported to bureaus?

I recently was approved for a new credit card. I have a pretty thick and mature file. Oldest account being 15 years with average age being about 9 years. The previous youngest account was 5 years and so I thought that ‘moving to a new bucket ‘ would cause a pretty big drop. So far 2 of 3 bureaus have reported the new account and have only dropped about 15 points. I expected it to drop more. Is that normal?