05-12-2011, 04:34 AM
The Grendel chamber and the LBC chamber differ in that the Grendel uses a compound throat, allowing multiple different bullets to feed and shoot well. I have many .25 MOA groups from 3 different Grendels, and believe that Bill Alexander found a bit of magic with his chamber.
The LBC chamber is a standard chamber, with a .295 neck. Bill Alexander found that the tighter neck offered no significant advantage in accuracy in the AR platform, and that when the rifle started to get dirty that feeding issues became a larger problem. I have seen it stated, and I believe it is probably true, that Les Baer intended his chamber to be specifically accurate with the Hornady 123, and that it is really designed to do so. Whether or not that impacts its ability to handle other ammo well is still up for conjecture.
The Grendel chamber does shoot most different loads well, and some of them spectacularly. If you want a tack driver, make sure you ante up for one of the premium barrels; ie. Shilen, Satern, or Templar.
The LBC chamber is a standard chamber, with a .295 neck. Bill Alexander found that the tighter neck offered no significant advantage in accuracy in the AR platform, and that when the rifle started to get dirty that feeding issues became a larger problem. I have seen it stated, and I believe it is probably true, that Les Baer intended his chamber to be specifically accurate with the Hornady 123, and that it is really designed to do so. Whether or not that impacts its ability to handle other ammo well is still up for conjecture.
The Grendel chamber does shoot most different loads well, and some of them spectacularly. If you want a tack driver, make sure you ante up for one of the premium barrels; ie. Shilen, Satern, or Templar.
You seek escape from pain. We seek the achievement of happiness. You exist for the sake of avoiding punishment. We exist for the sake of earning rewards. Threats will not make us function; fear is not our incentive. It is not death that we wish to avoid, but life that we wish to live. - John Galt