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Posted: 6/13/2011 7:26:42 PM EDT
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I got a good deal on 165grn jhp prolectiles, however, I can't find data for Alliant unique powder with the jhp. I do have data for the 165grn TMJ.
Can i use the data for the TMJ for the JHP due to the fact that they are the same weight? The next data I have is for a JHP is 180 grn. would that data be acceptable? any thoughts? |
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Using bullets that aren't supported with load data is a bit frustrating in load development.
Here's where having an arsenal of load manuals brings peace of mind to your decisions. I take all my load data and average. In your case you have 2 sources. Average the two lows and start with your average low. This is how I do it and I've got a few days experience at handgun cartridge load development. If I can't find jhp I will use tmj or fmj and average with jhp data. To beat my dead horse some more, you need more manuals. * keep lead data for lead data an don't mix with tmj or fmj. |
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For the most part many people fail to consider that when comparing loading data sources is that it is apples to oranges. Different powder lots, platforms real guns vs vented test barrels. For the most part all handgun bullets of the jacketed variety can be treated the same. Plated (not TMJ's from Speer as they are a different kind of plated bullet then say Berry's) irrespective of bulelt designation FMJ/CMJ/JHP/JSP/TMJ's from Speer.
Plated bullets and hard cast lead bullets loaded with lead bullet data. Hornady, Speer, and Remington have lead bullets but they are SWAGED, and thus even softer then hard cast bullets and the data ought to be gotten from say the Speer Manual or Hornady Manual. Choose a reliable data source and do the leg work by working up the load so that is safe, accurate, and reliable in your gun! |
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