Sorry, meant to reply to this last week.
Yes, I use an electronic machine (Wise 2086), but I can guarantee you that isn't the issue. First and foremost, I've strung well over 500 frames using Natural Gut in the 5 years I've owned the Wise. I've used all types of gut, to include Klip (coated & uncoated), Pacific, Babolat (BT7 and non-BT7), Volkl, Prince, and even Titan (cheap gut from Australia). Other than the Titan and a couple bad batches of Pacific Classic (documented here a few years ago), I've never had issues with it snapping on the machine. And I've strung gut as thin as 17L.
Second, the Wise is set on the slowest pull setting, and mentioned in my first point, other than a few outliers, I've not had issues with other gut brands.
The bottom line is this: This gut is simply too inconsistent in its quality and gauge. My last 2 sets of red 17g had 2 that were close to 17g, one that was closer to 19g, and another that looked to be 15L. The 19G snapped on the first pull (I knew it would, but what else was I to do?), and I watched the machine as it pulled. It was set for 52lbs and it snapped somewhere close to 40.
The 2nd half was put in my Head Prestige for the playtest (see Racquets thread). I got a singles match & a doubles match out of it, and it snapped last night.
The 3rd half is in my normal frame, which I haven't used yet (and I check daily to see if its snapped in the bag...so far, so good).
The 4th half...not sure what I'll do with it. I don't like thick strings, and I'm not about to put this in a customer's frame.
Yes, if you can get it off the machine, it plays nicely IMO. But at a 50% unusable rate (either from snapping or gauge inconsistency), its just not worth the $. You'd be better off paying the $38 for Pacific Classic.