[Bluegrass Poker]

Ok, here's the situation. Blinds are 100/200 (level 4). UTG raises to 600. I'm in MP and throw out 2 purple chips for a total of 1000. (Ignore the fact I made a min-raise since I wasn't paying attention to the fact that UTG raised to 600).

Player 2 seats to my left tries to tell me I can't raise it to 1000 that I have to make it 1200 to go since UTG made it 600. My position was that UTG only raised it 400 so my raise had to be at least 400 more which would be 1000. He said that UTG made it 600 so the next raise had to be at least 600 more for a total of 1200. I was pretty sure I was right but argument was somewhat heated (table are all good friends so it can get heated and immediately forgotten after the hand.) What was the amount I had to raise to make a proper raise?

Second, I threw out 2 purple chips which were 500 each. Another player tries to tell me that could have constituted a call had I not said raise since it was an overchip. I disagree and state the oversize chip rule applies only when 1 oversize chip is placed into the pot. He stated that since I could have placed those same chips out for a call that it would have been a call (assuming I hadn't said raise which everyone was in agreement that I did.) What is your thought on this scenario.

I think I was correct in both but if not I'd like to know so I don't make incorrect rulings in the future since I host the game and am the default TDA.