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fmj vs jhp question

Discussion in 'Handloading and Reloading' started by myFRAGisFUBAR, Jul 14, 2013.

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  1. myFRAGisFUBAR

    myFRAGisFUBAR Member

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    Hey everyone. I was at a local gun show looking for 40s&w bullets but all I came across were 180 grain fmj bullets. I'm a new reloader and am doing my best not to blow myself up so I have a question for some seasoned reloaders. I will be using hodgdon longshot powder to load with. I have seen a fair amount of loading data with this weight/powder but it is all for jhp bullets. My question is this, can I use the load data of a jhp round for a fmj round? I have seen charges between 7.2 and 8.0 for jhp rounds. Will this be the same for fmj rounds? Thanks again for the help and sorry if this is a frequent noob question.
     
  2. ColtPythonElite

    ColtPythonElite Member

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  3. Texan Scott

    Texan Scott Member

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    IF IF IF! They're both jacketed, of comparable weight, diameter, and seating depth, yes (probably). Start 10% low and work up carefully.
     
  4. bds

    bds Member

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    You could always use the lower load data for Berry's plated FP bullets - http://data.hodgdon.com/cartridge_load.asp
     
  5. gamestalker

    gamestalker member

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    I have frequently loaded FMJ and JHP using the same data, and have been doing so for many years. It seems by all appearance that many FMJ's have a thicker jacket, so that might explain why there is some data out there that treats them exclusively, but marginally so.

    Since your using Longshot anyway, just go with published JHP data, and you'll be just fine. I commonly use Nosler data when I'm loading FMJ's that don't have their own published data. I think Nosler shows 6.5 grs. - 8.0 grs. for a JHP, XTP I believe. As for data, just go to Hogdon reloading pages and see what they have for a start - max load table with Longshot. Hornady is pretty conservative with there data anyway, just a thought.

    GS
     
  6. myFRAGisFUBAR

    myFRAGisFUBAR Member

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    Thanks for all of the info everyone. I forgot the plated was a hybrid and that max plated bullets are usually middle range for fmj loads. :eek:
     
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