Ah, but I do have the neck size only die. And other than the one case head separation, which could be just a one shot deal, (Yes I did that on purpose!) the reloads have worked fine.
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People think I'm paranoid because I own guns. If I own guns, what do I have to be paranoid about?
I had the same issue with my No1 MKIII and am still in search of a bolt head that will fit. I think I have located a place that has them just waiting for a reply to my email from them if they have the larger ones in stock. I also found a barrel so I may just pick it up if I can't get this thing working. I don't know how much I really want to work on this anymore since I have the two No. 4s that are in perfect working order.
I know this has become a thread about bolt heads but I'm gonna respond to the original question...
I just shot S&B 180g out of my No. 5. My observation is that it was just as accurate as the Wolf brass 174g I shot before it but definitely loaded a little hotter.
I have noticed that their ammo seems to be a little hotter than other manufactures in all the calibers I have tried. I have tried their 223, 303, and 9mm(out of a friends pistol) They do seem a little warm