measuring chamber headspace

[toolsofthetrade]

Is there a way to measure the headspace of your chamber. So as to adjust your die for minimum sizing

[lwminton]

Is there a way to measure the headspace of your chamber. So as to adjust your die for minimum sizing

Get one of these:

http://www.redding-reloading.com/index.php?option=com_content&view=article&id=37:instant-indicator-headspace-and-bullet-comparator

and measure a fired case which is a good approximation of your chamber. For an AR, adjust the sizing die until the reading from the indicator is 3-5 thousandths lower.
You need to call Redding to get the correct die to fit the Grendel case. They told me the 6 PPC was ok and I have used that for years - it works with ease and I check cases all the time. I set mine into a T7 and leave it there. The size of the fired case grows a wee bit over time so I check now and then to make sure.

[lead chucker]

I use the hornady lock and load head space gauge and bullet comparator.

[lwminton]

I use the hornady lock and load head space gauge and bullet comparator.

The problem with this tool is that you are looking for a few thousandths and just the variation in attaching the gauge will be more than that - or who knows how much.

The II does not vary once set up and works like a charm. You will nor be saving any $ in the long run by going with cheap tools.

[lead chucker]

I have used the Hornady head space gauge for years and have never had a problem. I measure fired cases from each chamber and set shoulders back 3 to 5 thousands for gas guns and 2 thousands for bolts. Its always been accurate and repeatable. I have never had a head space problem either.

[lwminton]

I have used the Hornady head space gauge for years and have never had a problem. I measure fired cases from each chamber and set shoulders back 3 to 5 thousands for gas guns and 2 thousands for bolts. Its always been accurate and repeatable. I have never had a head space problem either.

Measure your fired case and then take the thing apart and then put it back together and measure again and report here the difference. You missed my point that there is no way of knowing how much slop there is in the setup. The II is setup once. It is a better tool - by far.

[GLShooter]

Measure your fired case and then take the thing apart and then put it back together and measure again and report here the difference. You missed my point that there is no way of knowing how much slop there is in the setup. The II is setup once. It is a better tool - by far.

I took it apart and redid it three times on a fired case. No variation in numbers. Since you zero the calipers with the gauge in place I don't see any slop.

Greg

[lead chucker]

Measure your fired case and then take the thing apart and then put it back together and measure again and report here the difference. You missed my point that there is no way of knowing how much slop there is in the setup. The II is setup once. It is a better tool - by far.

I understand your point, but there is no slop. I took the housing off the calipers and the gauge out of the housing, put it back together and re-measured brass...no difference. I do pay attention when mounting the housing to my calipers to make sure their in the same place and tight. Like I said, never had a problem.

[lwminton]

I understand your point, but there is no slop. I took the housing off the calipers and the gauge out of the housing, put it back together and re-measured brass...no difference. I do pay attention when mounting the housing to my calipers to make sure their in the same place and tight. Like I said, never had a problem.

good