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Speer Impact Bullets Data
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Hi,
Looking for new loads for my .300 Weatherby with 172gr Speer Impact other than the one supply by Speer, because the only powder I have from their data is with IMR-4831 and I have a lot of IMR-7828SSC and RL-22 and no data,that are very good for the .300. Anyone has tried other powders.
 
Posts: 7 | Location: Canada | Registered: 13 May 2006Reply With Quote
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If you can find data for 180gr use that.
 
Posts: 19711 | Location: wis | Registered: 21 April 2001Reply With Quote
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quote:
Originally posted by p dog shooter:
If you can find data for 180gr use that.

Not this time,Anyway I will work up some loads with the powder I have but here is some data from Speer manual #14 I have compare to what they give for their new bullets:
180gr. Grand Slam or Hot core with Reloder 19, max= 78.0gr.
165gr. Grand Slam or Hot core with Reloder 19, max= 80.0gr.
and for the 172gr. Impact with Reloder 19, max= 85.5gr. As you can see there is something different in the construction of their new bullet if you can go that high for the max load with that powder
 
Posts: 7 | Location: Canada | Registered: 13 May 2006Reply With Quote
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I had my best velocity with 7828 back in the day..


Ray Atkinson
Atkinson Hunting Adventures
10 Ward Lane,
Filer, Idaho, 83328
208-731-4120

rayatkinsonhunting@gmail.com
 
Posts: 42210 | Location: Twin Falls, Idaho | Registered: 04 June 2000Reply With Quote
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Me too I had best result with IMR7828SC with other bullets but not with the Intact bullets I could'nt get better than 4'' group. I will have to go with their data included in the box
 
Posts: 7 | Location: Canada | Registered: 13 May 2006Reply With Quote
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