If it is such a sucess, why hasn't the idea been nutured? I'd like to see data on large shot. Also if the 70mm cartridges were star crimped and the 65mm were roll, then the pattern would become more dense. Were yours star, roll or both?
In autos with chambers over 75mm for some reason the Rios(steel) tear the end off about every time.
Kidn Regards,
Raimey
rse
All were plastic hulls, all star crimped. Especially if the shot is enclosed in a plastic wad, I don't see how a bit of the case mouth extending into the cone could hurt the pattern. I certainly haven't tested enough to say conclusively that all (or even most) 2 3/4" hulls in short chambers will produce superior patterns to short shells; just reporting some examples I have from my patterning data.
Personally, I don't believe tighter necessarily = better, where patterns are concerned. For example, I was testing those loads at 25 yards. At that range, which is a fairly typical shot for me at pheasants or prairie grouse over my pointing dogs, I don't want a tight pattern. In fact, I've always used that particular Federal Gold Medal reload (with Unique) in only the tight barrel of my doubles--where I do want a tighter pattern.
