Woops, mixed some powder.

[scout_289]

Opps. Meant to type 4064. One of my fingers can't spell.

Yup. I've got a couple of those too ;-)

 

[amosfella]

There's a whole wide world of thing to figure out about reloading once one understands why things happen the way they happen in the basic sense. One starts off playing with the book loads, worrying that if you put just one kernel of powder too many in the case, the gun will explode, and add the bolt of the gun to your already grim facial features. Then, you find another loading manual, and discover that it has a competently different set of loads for the same bullet and powder combination. Etc. etc...

But once one understands how the pressures work, and how to read the cases to figure out ideal pressures, things begin to change.

I've developed loads for powder/bullet/cartridge combinations that I could find no data to even have a starting point to develop from. I realized that the gun wasn't likely to blow up in my face, even if I was way over pressured. The case might not survive, but whatever...

More of the world opened up, I started to question what causes case head weakening, and primer pocket loosening. I may have answers for that. My answer is similar to C-FBMI, but my solution is different due to a personal preference. This answer came from an educated guess and several other descriptions of how the cases react when they are fired.

 

[sharp shooter]

shake and load...

 

[Dogleg]

From reading all this I should now go shake up my 3/4lb can of IMR4064 that got contaminated with 1/3 pound H4895 last night.....

I'd pick a moderate load using 4895 data and use it up with some
fun and productive offhand practice. Offhand practice is also a great way to get rid of every safe handload that never worked out. Way better than pulling them down.

 

[tjhaile]

Mix well and use it. This is one case where dilution is the solution to pollution.

 

[Dake21]

I had 43ish grain of varget dumped in a pound of IMR 4064 by accident and marked it for disposal, but I suppose I'll reconsider.

 

[bsand]

I had 43ish grain of varget dumped in a pound of IMR 4064 by accident and marked it for disposal, but I suppose I'll reconsider.

I'd use it only contaimented by 0.062%

 

[Kryogen]

Mix well and use it.
Just start 10% below max and work up the load...

IMR4350 is just slightly higher pressure in a 308 load.
QL lists the pressure almost the same in a 308 load.

 

[Kryogen]

I had 43ish grain of varget dumped in a pound of IMR 4064 by accident and marked it for disposal, but I suppose I'll reconsider.

shake, start 10% below max, work up the load....

 

[Sqr]

Contact one of the powder manufactures and see what they think............

 

[RifleDude]

I had 43ish grain of varget dumped in a pound of IMR 4064 by accident and marked it for disposal, but I suppose I'll reconsider.

Varget is basically a more temperature stable IMR4064, very similar burning rates, so I wouldn't worry about a little bit of Varget mixed in with IMR4064. I doubt that you'll notice the difference when shooting your reloads.