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Same Powder Different Lot ??(Please read)

 
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  #8  
Old 11-09-2012, 06:17 PM
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Re: Same Powder Different Lot ??(Please read)

Quote:
Originally Posted by backwoods83 View Post
If your old lot of Retumbo has a lot# of 5026 or lower it is the right burn rate, if the lot# is 5027-5098 your velocity will likely be higher or be the same with more pressure, I found this out in my 6.5x284, had to back off 1.5 grns and lost 30fps, so I went to another suplier and got a bunch of the older lot. The powder between the lot numbers I mentioned is closer to H1000 than Retumbo, about on par with RL25.
I just bought 5 lbs of 5026 made in December 2011. I hope it's similar to what I have been using.
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  #9  
Old 11-09-2012, 06:27 PM
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Re: Same Powder Different Lot ??(Please read)

I can't imagine only buying 1lb. of Retumbo for a 300RUM. For your bullet weight it's just about the best pick and if it has worked in the past do yourself a favor and buy it 8lbs at a time. You would also be better off to buy enough of your 210's in the same lot# to launch with that 8lbs. The Berger's can vary quite a bit from lot to lot too.
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  #10  
Old 11-09-2012, 06:51 PM
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Re: Same Powder Different Lot ??(Please read)

Brentc, I have a pound of 5026 lot# it is the same as my recent 3lbs of 4986 lot, its where it should be in my rifle.
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  #11  
Old 11-09-2012, 07:54 PM
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Re: Same Powder Different Lot ??(Please read)

A person can't get away without chronographing loads with a new powder lot.
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  #12  
Old 11-09-2012, 08:00 PM
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Re: Same Powder Different Lot ??(Please read)

Quote:
Originally Posted by Cornfield Flats View Post
A person can't get away without chronographing loads with a new powder lot.
I have a CDM 2 I didnt chrono this new powder because I have found my chrony to say one thing and my actual field impact shows different . I would start with a chrony then let the software match my real world data as far as impacts on my target . I thought I would be close enough then select the target validation mode and go from there. just my opinion.
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  #13  
Old 11-13-2012, 11:14 AM
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Re: Same Powder Different Lot ??(Please read)

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Originally Posted by SBruce View Post
I haven't yet changed lot#'s with Retumbo, cause I bought 8#. I don't know what to expect when I change lots the first time either.
Interested to read what comes of this.
this may sound stupid as long as i have reloaded but where is the lot num. on the h1000 one can has a num. the other one doesn"t thanks
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  #14  
Old 11-13-2012, 10:25 PM
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Re: Same Powder Different Lot ??(Please read)

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Originally Posted by meat head View Post
this may sound stupid as long as i have reloaded but where is the lot num. on the h1000 one can has a num. the other one doesn"t thanks
Here you go.
5023 is the lot number on this one.
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