02-14-2012, 02:17 PM
I wonder how many years it will take to work these kinks out, and if most of these other shops will just start making Grendel chambers with Grendel bolts to the standard SAAMI spec, or continue to deviate.
The fact that several barrel shops are using some other chamber has been stopping me from ordering from them. I don't want a bolt that has the wrong depth for the Grendel extractor rim dimensions, and I don't want a .295" or .297" or .292" neck. I just want the SAAMI chamber that I can expect industry support from, with known loads. I learned recently how important start pressure is with solids, and if you change the neck tightness, and throat angle from a known chamber, that is going to have effects on start pressure bigtime.
Since we're mostly dealing with AR's, you can't just have your barrel short-chambered by someone with a true Grendel reamer to correct the problem, because your gas port is already drilled. People need to get on the SAAMI chamber already.
The fact that several barrel shops are using some other chamber has been stopping me from ordering from them. I don't want a bolt that has the wrong depth for the Grendel extractor rim dimensions, and I don't want a .295" or .297" or .292" neck. I just want the SAAMI chamber that I can expect industry support from, with known loads. I learned recently how important start pressure is with solids, and if you change the neck tightness, and throat angle from a known chamber, that is going to have effects on start pressure bigtime.
Since we're mostly dealing with AR's, you can't just have your barrel short-chambered by someone with a true Grendel reamer to correct the problem, because your gas port is already drilled. People need to get on the SAAMI chamber already.