I have a 300 RUM reamer that Pacific Tool and Gauge made for me. They use a different throat angle than their usual 1 1/2 degree. I asked Dave about it and he said through testing they determined that throat angle was best.
There is a shift to a different throat angle under foot these days. I've had several new reamers made with this change and I'm in process of chambering barrels to start the testing.
I've used PT&G reamers since they started out (under another name...) with great success for the most part. There was a short period of time when I got a reamer or two (or three...) which were not to my liking so they got sent back for proper reamers to be made.
Losing time and money makes me a little upset.
I've ordered a couple of dozen from Manson and a handful from JGS. All of these have been good except for the last two I just got which have to go back.
So what's the real story?
Every reamer maker makes good reamers. But every now and then one which is not good slips by the QC guys/girls so we're left with sending that one back. Universal condemnation of a manufacturer with the qualifications our reamer makers have is simply overstating a grievance and trying to sway public opinion. But we're all guilty of trying to sway opinions!
Order with confidence or make a couple of phone calls to get better information about dimensions and the bullets you want to use. Ask your gunsmith before ordering anything because he might know more about your needs and save some time and effort. Be patient as every one of the makers is super busy but they will get to your order in order.
Enjoy your project!