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  #1  
Old 07-16-2019, 09:18 AM
Robert C. Lovell Robert C. Lovell is offline
 
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Location: Hennessey, OK
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Default change in 4064

I opened a new jug of 4064 yesterday and noticed that the individual powder grains were smaller than what I was now using. I called the company and they had no idea what I was talking about since they had not heard anything about it. I was afraid that the smaller grains would burn faster. They did tell me that the last one I got was older than the first one. Anyone else noticed anything?
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  #2  
Old 07-16-2019, 10:09 AM
Jpm Jpm is offline
 
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which 4064, there's more than one
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  #3  
Old 07-16-2019, 11:26 AM
Robert C. Lovell Robert C. Lovell is offline
 
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Sorry about that. I am so old I forgot that there was anything else. IMR4064.
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  #4  
Old 07-16-2019, 11:38 AM
ceresco ceresco is online now
 
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Robert: they have many ways to adjust the powder burn rate and they are somewhat obligated to standardize to the 4064 specs. If the kernels are smaller, good, it will meter better, allow more in the case and the burn rate will be essentially the same. You can find 4831"short cut" and it burns the same as standard 4831, for example. Good Shooting. ...
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  #5  
Old 07-16-2019, 01:10 PM
Robert C. Lovell Robert C. Lovell is offline
 
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Ceresco, thanks. They said that they have had no mention of it and since the smaller is actually an earlier run, that if there was any problem they should have heard about it. They did suggest that I make up some rounds and test to see if there are any signs of excessive pressure. I just did not want the signs to include a blown up rifle. I am really not equipped to test small runs and right now I am in process of loading about 1,000 .243 and .308 to shoot at Whittington this fall. I may see if I can get to a range before long. It is too hot right now for an old man to be out.
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  #6  
Old 07-16-2019, 02:48 PM
Robert C. Lovell Robert C. Lovell is offline
 
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There is a moral to this story. Never make judgment on a small sample. I had been going on the size of grains stuck to the seal of the containers. When I got larger samples, I found that there is large difference in the individual grains and when taken as a whole, there is no difference. Sorry for stirring up something that does not exist.
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  #7  
Old 07-16-2019, 03:53 PM
Jpm Jpm is offline
 
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always better to be safe than assume all is good when you're reloading!
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  #8  
Old 07-16-2019, 06:00 PM
sigman2 sigman2 is offline
 
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Quote:
Originally Posted by Robert C. Lovell View Post
There is a moral to this story. Never make judgment on a small sample. I had been going on the size of grains stuck to the seal of the containers. When I got larger samples, I found that there is large difference in the individual grains and when taken as a whole, there is no difference. Sorry for stirring up something that does not exist.
Hey, my ex wife used to say I was like an outboard motor in a cesspool.
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  #9  
Old 07-18-2019, 03:09 PM
mikld mikld is offline
 
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I'm not a powder expert, but I've read, in books not on line, that powder manufacturers keep their powder performance/specs to within 4% of the powder's "standard", lot to lot (burn rate, temps, etc.).
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  #10  
Old 07-19-2019, 05:43 AM
dartem dartem is offline
 
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Quote:
Originally Posted by sigman2 View Post
Hey, my ex wife used to say I was like an outboard motor in a cesspool.
I've gotta remember that one!

-Mike
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