11-25-2013, 02:35 AM
My understanding of the reason behind lapping the locking lugs is as follows:
The primary purpose is to increase the bearing surfaces of the lugs. This ensures the load encountered during firing is evenly distributed. The secondary reason, but the one most desired, is the potential for improved accuracy. There seems to be a perception that the Grendel is a bolt breaker, but I think that the reputation is more anecdotal than factual. Regardless, I can see the practical application of lapping the 6.5G bolt's locking lugs, if for nothing else, than to evenly distribute the force loads across all the lugs, thus reducing the possibility of any one fracturing.
What I am uncertain of, however, is the accumulated wear of the the barrel adaptor. If, for example, you have more than one bolt, do you lap them all? And, if so, does that translate into unwarranted wear of the barrel adaptor (manifesting as additional headspace)? It seems to me that there is a distinct possibility of overthinking this.
The primary purpose is to increase the bearing surfaces of the lugs. This ensures the load encountered during firing is evenly distributed. The secondary reason, but the one most desired, is the potential for improved accuracy. There seems to be a perception that the Grendel is a bolt breaker, but I think that the reputation is more anecdotal than factual. Regardless, I can see the practical application of lapping the 6.5G bolt's locking lugs, if for nothing else, than to evenly distribute the force loads across all the lugs, thus reducing the possibility of any one fracturing.
What I am uncertain of, however, is the accumulated wear of the the barrel adaptor. If, for example, you have more than one bolt, do you lap them all? And, if so, does that translate into unwarranted wear of the barrel adaptor (manifesting as additional headspace)? It seems to me that there is a distinct possibility of overthinking this.