09-10-2020, 10:37 AM
I had to set it back, my chamber is .006 short of spec. Your situation may be different, but these are my obsevations. I am finding that cases fired from two different guns varies b etween the two, but as stated one has a tight chamber.
Using the SAAMI spec the "B" datum line to case head per spec is 1.190 -.007, so your minimum spec should be 1.183. If you measure an unfired Hornady factory load it is at the minimum of the spec 1.183.
On our Faxon barrel the cases grew past the max case length to 1.194. Traditionally folks will only bump a case shoulder back .002. If you do this on your cases you are still going to be past the maximum spec. Maybe not a bad thing traditionally, as you have now resized your brass to fit your chamber. But on another note you are still outside the maximum spec for the cartridge. I believe with this round, and the use of mags that are designed for a different round this is somewhat of an issue. It is only speculation on my part. And I would have had more data had my son not mixed my brass from our last range outing. So I am only passing on what I have found so other folks can observe what is happening for their own particular situation.
For my Odin barrel I have to bump the shoulder back to 1.183, which is the minimum spec for the cartridge, remember the chamber is .006 short. So the case is at out of box factory spec and I have not experienced the feeding issues others are experiencing. Some folks are saying they can not use the ELander grendel mags, I have one of them and it is the one mag that I use the most. At this point all this info is only speculation, as I need more data, which I would have had my son just left things alone. I know he was only trying to help, and I wasn't mad just a little disappointed because it created a lot more work for me to process about 300 fired cases.
Using the SAAMI spec the "B" datum line to case head per spec is 1.190 -.007, so your minimum spec should be 1.183. If you measure an unfired Hornady factory load it is at the minimum of the spec 1.183.
On our Faxon barrel the cases grew past the max case length to 1.194. Traditionally folks will only bump a case shoulder back .002. If you do this on your cases you are still going to be past the maximum spec. Maybe not a bad thing traditionally, as you have now resized your brass to fit your chamber. But on another note you are still outside the maximum spec for the cartridge. I believe with this round, and the use of mags that are designed for a different round this is somewhat of an issue. It is only speculation on my part. And I would have had more data had my son not mixed my brass from our last range outing. So I am only passing on what I have found so other folks can observe what is happening for their own particular situation.
For my Odin barrel I have to bump the shoulder back to 1.183, which is the minimum spec for the cartridge, remember the chamber is .006 short. So the case is at out of box factory spec and I have not experienced the feeding issues others are experiencing. Some folks are saying they can not use the ELander grendel mags, I have one of them and it is the one mag that I use the most. At this point all this info is only speculation, as I need more data, which I would have had my son just left things alone. I know he was only trying to help, and I wasn't mad just a little disappointed because it created a lot more work for me to process about 300 fired cases.
If you can not see the tyranny of having a gun ban enforced by men with guns... Then you fail to understand why the second amendment was written in the first place.