Here's another testimonisl to H335. I know nothing about reloading, but a friend suggested H335 for my .223 AR.. I bought 55 gr. Sierra Spitzers and he loaded them for me.
I shot yesterday and I was MORE THAN IMPRESSED with the results. I have never shot so well, period. Look out yotes!
I do not know who is trying to discourage you from using H335, but WOW, I am a believer.
Rustydog