XBR is faster burning than H4895 and is much hotter than Varget or Re15 (two popular powders in 6br) I have shot some XBR in 6PPC and so far I love this powder. (Burned up a pound so far) The powder is designed for calibers where a faster burning powder is used like a 223 Remington.
I would say that XBR would be good in a 6br with light 65-75 gr bullets, I would say 87 gr v-max would be about the limit of the powder.
Bookmarks