From the charts I've seen, BH 209 gives a bit higher velocity than 777. But for deer hunters and especially stand hunters, I'm not sure that makes much difference. If the price were less, I'd shoot BH 209. It is nice not to swab between shots. I couldn't see much difference in accuracy. 777 shoots fine in my rifle out to 200 m. For elk, I want as much velocity as I can get, so it is either 777 or BH 209. I've never had a misfire using #11 caps and 777, although a few hang-fires when really cold. I've had a misfire using BH 209 and 209 primers, again when cold. Critical to keep your breechplug clean when shooting BH 209. Clean 777 with Dawn and hot water. Clean BH 209 with Hoppes, just like your centerfire. I swab between each shot with 777. Just lick a patch and run it down and back a few times. It helps cool the barrel, and makes your range session last longer.