I think most people who are already educated about HSV will handle the disclosure at any time quite well. I think your mindset going into the disclosure is important - don't make it sound horrible. When I've made the disclosure I tell them sincerely that protecting them is important to me, and although it's not a huge deal to have it, I don't want them to get it. I explain that there is a chance that they might still get it due to asymptomatic shedding but that with daily antivirals and condoms, the statists of female to male transmission is about 1%. I got this info from Arial's handouts.
From reading others stories, it sounds like there are a lot of success stories about disclosing. The two boyfriends I disclosed to reacted differently but the outcome was still positive. The first was a doctor who actually teaches medical students about HSV and he and I talked quite a bit before the first date, but we ended up in bed on the first date and he was so unconcerned about it, it was a true blessing. The second is much more conservative about sex in general, I disclosed on the fourth date and I gave him the info and told him to think about it and he said that he didn't want to get it, but liked me well enough it wasn't a huge deal. These guys didn't reject me because they saw me as more than a disease. They saw me as a person they wanted to get to know and have a longer term relationship with.
I can only really speak to disclosing when I am thinking about a potential long-term relationship. Are you looking for casual sex or a long-term relationship? I've had plenty of the former and have zero shame about it, but HSV has made me more cautious in general about who I have sex with and the timing of the disclosure. If you are looking for a potential LTR try to remember that rejection after disclosure is often more about the overall fit between you and the other person, not about HSV. This article posted in another thread has been hugely helpful: https://tinybuddha.com/blog/big-little-secret-rejection-get-past-quickly/. I truly believe that the person I'm supposed to be with next (whether they have HSV or not) will deal with my status because they want to be with me. If they don't really think I'm LTR material for them, HSV is a really easy excuse.
This is a really long answer to your question but let me sum it up - I have decided that the best course of action for me is to get to know someone and them me, before I make the disclosure. They may still end up rejecting me, it will hurt and there is a chance it's due to HSV. But if they do reject me, I need to believe it's because they have determined we are a good fit, and they just saw it first.