I reload for 3, 1-9 243's, and they all love 87's more than 58's. I haven't tried anything in between, or tried any factory. 95 gr sst's also shoot amazing. These are gas guns.
I've been keeping an eye on what's available and kind of waiting for someone to offer a bulk deal kind of like what Dogtown did a few years ago. I think over the next couple of years we'll see some pretty good deals.
