Do you recall the round count prior to adding the +P throat? And how many since the modification?I am very impressed with what it did for my 300 win mag so far. I shot this barrel for at least a year before I added the +P throat. The goal was to remove the top end pressure I was seeing just under max charge weight and allow me to run faster, but yet still in the large node a few grains below max. That velocity node has always seemed to be a wider node in my 300 win mags. It did just that. From that same 26" barrel I am running 215's at an average 3015 fps with a nice soft load of H-1000 and I am a good 2 or 3 grains below where first pressure signs appear. All still in the very same 50 pcs of ADG Brass I started this barrel with a few years back. And yes, primer pockets are great. More time with this rifle will maybe answer more questions.