5.56 IVI brass?

[Janeau]

The IVI is as good as the Lake City.
Made by General Dynamic after all.
Crimp removed - primer pocket uniformed - trimmed and chamfered - and if you want to push it + weight sorted and neck turned - they last and shoot as good as any. Like any brass - uniformity is the key.
Thats all I was using in my match AR 15. Now I am using it in a Savage 12F target gun and won match with it.

 

[Janeau]

I use this on a drill to remove the crimp... make a much better job than a chamferer who can damage the primer hole.
Right tool to do the job right.

 

[Maple57]

I have a ton of IVI 15 and IVI 18. I sold a bunch of LC 07 because I'm using the IVI exclusively. Never had to use a small-base die, though. Just the headspace/shoulder pushback being inconsistent.

The experts keep saying that case capacity is lower on military brass but I measured 30.4 gr H2O on the IVI 15 brass, pretty much the same as commerical R-P that I checked.

I noticed when sizing the once fired IVI that some cases were acceptable after being sized with a regular die, and some would not chamber.

I assume it depends upon what the chamber dimensions were in the rifle that fired the brass.

For the purpose of consistency, I sized the once fired brass twice, once with the regular sizing die and then again with the small base sizing die.

It was just too difficult to go straight to the small base sizing die as I got cases stuck in the die trying.

I just found my life was better by sizing the brass twice. This way yes the brass was on the small side, but once fired, they would then fit my chamber and volumetric differences would stabilize.

So, I have two loads, one for the first firing and one for the fire formed cases.

After they have been fired once, I revert to the standard minimal shoulder bump routine.

H2O capacity is a direct reflection of case weight with a once fired case, and not a meaningful means of sorting brass. The error in water variation from case to case is greater than the brass weight variation you are trying to measure.

All water does is give you a ball park sense of case volume, not an accurate measurement.

 

[recce]

I noticed when sizing the once fired IVI that some cases were acceptable after being sized with a regular die, and some would not chamber.

I assume it depends upon what the chamber dimensions were in the rifle that fired the brass.

Those larger ones may have been fired from a C9 not a C7/8.

 

[scout]

I wish that IVI would sell their brass commercially (a headstamp change is simple enough if required). Their brass from the 70's and 80's was pretty inconsistent in weight and thicknesses (DA brass from the 60's seemed better), but the 7.62 brass made in the last 10 years has been quite decent quality and about 1.0 gr less internal capacity than Lapua ... which seems to be slipping a bit on their quality.

 

[cancer]

I wish that IVI would sell their brass commercially (a headstamp change is simple enough if required). Their brass from the 70's and 80's was pretty inconsistent in weight and thicknesses (DA brass from the 60's seemed better), but the 7.62 brass made in the last 10 years has been quite decent quality and about 1.0 gr less internal capacity than Lapua ... which seems to be slipping a bit on their quality.

That's interesting. Any IVI 7.62x51 over the last 10 years would have almost certainly been fired out of a C6. Sure, there might be the occasional Parker-Hale fired round, but most should be loose, bloated machinegun brass. Would certainly want to full length re-size with a proper amount of lube!