No, I am not authorized to say mean things to you such as "you will suffer in hells", and certainly I would still be your friend, and very much so to those who never were a Hindu and eat beef, I will treat them with respect, show love and mercy appropriately.
For one who was already a Hindu and then knowingly eat beef, I am not the "police of dharma" nor a Bhairava nor will be mean to you or say you are going to hell, nor go bezerker and "hound" you, no. But I will give my honest opinion that you have "stepped away" and to return you MUST do penance.
Eating beef means taking a society surely down the path to war. This is what I am taught. A Hindu who does so has the effect of 10,000 non-Hindus taking a society down the path to war.
Do not confuse, I am not saying there are no just wars. I am not a fan of Gandhi. In fact, there may be a time or reason why war is brought upon for a reason by means of actually stimulating it by means of opportunity to eat beef, though rare. I do not recommend it.
For you, I do not say mean things. You can always be my friend, though I am not special, nor am I interested in endless preaching because basically I am lazy, not interested in the "whys" but only interested in results, outcomes and having fun in the process. If it works, don't try and fix it. If the garden is around you, no need to eat a toad "just to see". If the doctor says "drink this potion" and it works, cures me, I don't waste time asking "why" before or after, I get on with experiences, adventures, fun.
For you, I thought I saw something for you if you were a Hindu and knowingly ate beef. You should fly to India as soon as possible, go to Mother Ganga, enter Her embrace of jal, with hands in Namaskar. Then with devotion say "Mother Ganga". Nothing else you need to say. You will be instantly purified and a Hindu.