07-02-2018, 04:40 AM
You don’t have to have a compound throat. The advantage of the compound throat for me has been my 6.5 Grendels show good accuracy with bullets from 85 grains to 123 grains. The 264 LBC uses a strandard throat and lead which shoots some bullets accurately and was optimized for the 123 grain SMK. Bill Alexander testing showed the potential of the compound throat to produce good accuracy with a variety of bullet profiles. It is up to the consumer to decide if they believe the advertising.
I think the majority of the out of spec chambers is the lack of quality control whether it is the source of the reamer, using reamers that are worn or personel not excersizing enough QC inspections. The industry has been producing 5.56/223 barrels for 50 years whereas the 6.5 Grendel as only started to go main stream by numerous manufactures in the last two or three years. In years past there were only 4 or 5 sources for 6.5 Grendel barrels. Many of the 6.5 Grendel barrels were expensive and only a couple of manufacturers mass produced 6.5 Grendel barrels for the AR-15.
I think the majority of the out of spec chambers is the lack of quality control whether it is the source of the reamer, using reamers that are worn or personel not excersizing enough QC inspections. The industry has been producing 5.56/223 barrels for 50 years whereas the 6.5 Grendel as only started to go main stream by numerous manufactures in the last two or three years. In years past there were only 4 or 5 sources for 6.5 Grendel barrels. Many of the 6.5 Grendel barrels were expensive and only a couple of manufacturers mass produced 6.5 Grendel barrels for the AR-15.