Who actually uses the SAAMI reamer on AR barrels?

[LRRPF52]

Someone sent me this link a while ago and found it interesting enough to share:

http://bulletin.accurateshooter.com/2015...s-it-gets/

Radical New Reamer Design from PT&G
Lou used a new chamber reamer from Pacific Tool & Gauge (PT&G) with special geometry in the leade/throat section. Called a “Bore Rider” (or sometimes “bore-runner”, this new reamer design cuts a staged, variable taper in the leade/throat area that is quite different than the taper in a typical throat. It’s a little hard to explain, so we’ve included the 6 PPC Bore Rider reamer print below.

Thanks for that blast from the past Drifter. It reminded me of some of the milestones along the way in this legacy. One important thing I had forgotten about was how so many barrel makers were dealing with demand, while not having any reamer or chamber prints for 6.5 Grendel even after SAAMI approval, which can be a long and painful process.

For example, the .458 SOCOM has been on the market now since 2001 and enjoys support from one of the biggest manufacturers in the AR15 industry (Rock River Arms), as well as one of the most well-respected custom shops (Wilson Combat). There still isn't SAAMI approval of the .458 SOCOM, yet it has been produced for a decade and a half, complete with its own share of reamer and chamber problems that have reared their heads for some customers.

The fact that the 6.5 Grendel went as early as it did through SAAMI submission and approval, and was a relatively pain-free experience once it was out of AA's hands, shows that it was very well designed and thoroughly tested.

I still think that many of the barrel makers are using other chamber designs because of the industry trend that existed before SAAMI approval, and the fact that most people go to PTG for reamers since they are fast.

A lot of customers in this generation are not known for patience, so that reflects in rifle builders.