Retirement tax questions

Sorry I don't understand. It is showing up in my AGI. Using fake numbers but I have 300k from the W2 (1040 line 1a), and 2k from the distribution on 4a and 4b. This totals to 302k on line 10 and 11.  My refund is clearly lower than if I don't enter a 1099-R at all and simulate what would have happened had I never done this. When I print out my return nothing changes.