Yesterday my working sdets on the bench press were 320-345lbs I warmed up like this
132x10 220x10 264x8 286x5 then into ny first set of 9. I like to warm up to feel the weight so my work sets do not feel heavy. I apply this approach on pretty much everything except shoulders. 1x20 with 70lb standing db press, 1x8 with 110lbs then work sets with 120s. Too time consuming to do otherwise