I can tell you that Nosler makes some very nice handgun bullets and their attention to detail is obvious...and reflected in their price. However, they are amongst the SLIMMEST handgun bullets I've ever tried, and I had to discontinue their use in 10mm because I simply wasn't happy with the case mouth tension I get with them.
And I suppose you could reference some manner of technique or operator error, but that would fly in the face of the some 4,850 other top-notch 10mm handloads I've concocted with bullets manufactured by at least six different companies and sent downrange in four different handguns... so my experience tells me it was the Nosler slugs.
I went through 750 of them in 10mm -- and still use them in .44 Magnum.
Attention Brass rats and other reloaders: I really need .327 Federal Magnum brass, no lot size too small. Tell me what caliber you need and I'll see what I have to swap. PM me and we'll discuss.