Pellet vs. leaf

[Radler]

Hi, I have only ever used pellet hops and am now using a different shop which only carries whole leaf. If my recipe called for 1 oz. Hallertau can I use 1oz leaf just as well as pellet or is there some difference I should know about? I would guess not but I would like to be sure. Thanks.

[BillyBock]

Per given weight, pellets will give you more IBUs in the kettle. Leaf hops will also absorb wort, so this should be factored into your post-volume boil calculation. And for the life of me, I can't remember the rate just now because I'm trying to figure it out for my last few batches. Can anyone chime in on whole leaf absorption rates?