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Moose Down 778m

 
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  #71  
Old 10-22-2013, 01:27 AM
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Re: Moose Down 778m

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Originally Posted by Broz View Post
I understand. The issue I had with it was pressure spikes. If I loaded it up to max to get that little extra velocity, what was fine today would be too hot with a stiff bolt next week. Even in the same lot. It just seemed to have pressure spikes when running close to max. I preferred H-1000 as it seemed to be the same powder all the time, every time, if you use the same lot.

jeff
I've tried a lot of powders over the years loading for thirty different rifles and 7 different calibers and H-1000 is the most consistent powder I've ever used. Lots of powders can be just flat temperamental as all get out with wild shifts in pressure signs and velocities depending on environmental factors but H-1000 just seems to never have a bad day.
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  #72  
Old 10-22-2013, 11:09 AM
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Re: Moose Down 778m

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Originally Posted by Broz View Post
I understand. The issue I had with it was pressure spikes. If I loaded it up to max to get that little extra velocity, what was fine today would be too hot with a stiff bolt next week. Even in the same lot. It just seemed to have pressure spikes when running close to max. I preferred H-1000 as it seemed to be the same powder all the time, every time, if you use the same lot.

jeff
I don't doubt your experience at all Jeff, but it's very interesting to me that I have not experienced the spiking at all with my loads and I run mine at red line or close to it. You no doubt have burned a lot more Retumbo than me. What time frame did you experience this? Could it have been a bad batch? I think I remember reading a couple months ago about a couple of cases where guys were getting "caking' in their case with compressed or near compressed loads.
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  #73  
Old 10-22-2013, 11:41 AM
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Re: Moose Down 778m

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Originally Posted by MontanaRifleman View Post
I don't doubt your experience at all Jeff, but it's very interesting to me that I have not experienced the spiking at all with my loads and I run mine at red line or close to it. You no doubt have burned a lot more Retumbo than me. What time frame did you experience this? Could it have been a bad batch? I think I remember reading a couple months ago about a couple of cases where guys were getting "caking' in their case with compressed or near compressed loads.
Along these lines, has there been any in-depth discusssion on whether the lie/packing of the powder in the case can influence velocity/pressure significantly? This has been a concern of mine as I transit via boat for a couple of hours in rough water and have noticed spikes after that in my 300. I don't run compressed loads with H4831SC and there is a significant amout of powder movement in the case. I wonder if it packs on one side and burns differently.

Eli
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  #74  
Old 10-22-2013, 05:36 PM
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Re: Moose Down 778m

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Originally Posted by MontanaRifleman View Post
I don't doubt your experience at all Jeff, but it's very interesting to me that I have not experienced the spiking at all with my loads and I run mine at red line or close to it. You no doubt have burned a lot more Retumbo than me. What time frame did you experience this? Could it have been a bad batch? I think I remember reading a couple months ago about a couple of cases where guys were getting "caking' in their case with compressed or near compressed loads.
Mark. it was 4 to 5 years ago and prior. Back when I was loading 30-378's, 338-378's, 378's and 340's a lot. None were compressed loads and yes it was from more than one lot over a few years.

Jeff
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  #75  
Old 10-22-2013, 06:03 PM
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Re: Moose Down 778m

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Originally Posted by Scrubbit View Post
Along these lines, has there been any in-depth discusssion on whether the lie/packing of the powder in the case can influence velocity/pressure significantly? This has been a concern of mine as I transit via boat for a couple of hours in rough water and have noticed spikes after that in my 300. I don't run compressed loads with H4831SC and there is a significant amout of powder movement in the case. I wonder if it packs on one side and burns differently.

Eli
Were the spikes with 4831 or Retumbo?

Jeff
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  #76  
Old 10-22-2013, 06:15 PM
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Re: Moose Down 778m

H4831sc
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  #77  
Old 10-22-2013, 06:18 PM
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Re: Moose Down 778m

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Originally Posted by Scrubbit View Post
H4831sc
Thanks. That's interesting. Were the ambient temps hot?

Jeff
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