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How do figuare the dram equilivents?

Discussion in 'Uncategorized Threads' started by Jornski, Oct 1, 2007.

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  1. Jornski

    Jornski TS Member

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    I am thinking of going to the wobbles event.You can not use a load bigger than 3 drams is there a FPS conversion? Also how many oz load 7/8 ,1, 1 1/8 are aloud
    I am wanting to reload my shells for this. Thanks John
     
  2. Texas Ton

    Texas Ton TS Member

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    1 1/8 is 1200

    1oz is 1235

    7/8 is 1255

    But I didn't know anyone used the 3 dram limit any longer
     
  3. shot410ga

    shot410ga Well-Known Member

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    "Dram" is an old black powder system of measurment. I don't know why it's still used. However, the following generally applies:

    2 3/4 dram = 1150fps

    3 dram = 1200fps

    3 1/4 dram = 1250fps

    ect, ect, ect for every 1/4 dram add or subtract 50fps.
     
  4. BDodd

    BDodd TS Member

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    According to my source and based only on 3 Dram Equiv. loads:

    1 1/8 oz loads = 1200 fps

    1 oz loads = 1235 fps

    7/8 oz loads = 1270 fps

    And, yes, the term is an ancient measurement for velocity obtained with drams of black powder which has no method of conversion to modern powders except by velocity obtained.....breakemall....Bob Dodd
     
  5. maclellan1911

    maclellan1911 TS Member

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    Jornski, first off if your only have a 3 dram limit how about loading up some 3" shells with 1 1/4 #6 shot. should crush anything LOL. What are you loading. If your useing alliant powders their recipe charts still give dram equil on far left side. good luck.
     
  6. maclellan1911

    maclellan1911 TS Member

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    just looked at my remington magnum turkey shells 1220fps 1 7/8oz #6 shot that must crush targets, If the shoot is going buy ATA guide lines on shell rules

    XIII F. 3.
    max 1290fps with 1 1/8oz shot

    max 1325fps with 1oz shot

    max 1350fps with 7/8oz shot Maximum shot size #7.5 for all loads.

    Imagine if the only rule we had was 3 dram max for ATA.
     
  7. phirel

    phirel TS Member

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    1 1/8 oz is 1200

    1 oz is 1235

    7/8 oz is 1255

    These are fairly accurate but industry standards also allows a +-90 feet per second variation around these numbers. That means a 3 dram equivalent factory shell can be anywhere between 1110 and 1290 feet per second. This range also means that 2 3/4 dram, 3 dram and 3 1/4 dram shells all overlap in velocity.

    One rather popular imported discount shell was, at least at one time, making a large number of shells with exactly the same components in all of them. Some of the shells were put in boxes labeled 2 3/4 dram #8 shot, others put in boxes labeled 2 3/4 dram 7.5 shot, others were boxed as 3 dram 8 shot while others were labeled as 3 dram 7.5 shot. All of the shells in these 4 differently marked boxes were identical.

    John- You asked what is a 3 dram equivalent load. My answer is I don't know.

    Pat Ireland
     
  8. dmarbell

    dmarbell Active Member

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    Here's a chart I found. I didn't get to check the source out yet.

    Danny
     
  9. dmarbell

    dmarbell Active Member

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    The chart at recguns.com above matches closely the dram equivalent figures given for Remington Premier STS Target Loads. Small differences.

    I bought some 1 oz. Remington game loads just before dove season opened and shot them for trap. They were marked 1290 fps and 3.25 dram equivalent. That matches the recguns.com chart.

    Most of the definitions of dram equivalency I've found state that the term was developed ... Was there an authority or governing board, or some initial testing?

    Danny
     
  10. BDodd

    BDodd TS Member

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    I believe my source, above, was from a powder company loading manual, certainly not from any empirical knowledge. I'd reckon the idea that it's a pretty vague or flexible rating would be correct as suggest by others but it's those numbers I use for personal consideration....breakemall....Bob Dodd
     
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