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Promo--anyone checked the fps on these loads?

Discussion in 'Shooting Related Threads' started by xringjim, Aug 12, 2010.

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  1. xringjim

    xringjim TS Member

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    I'm up to trying out a 19.5grn load behind a one ounce jammer xl-1 wad. Been loading up to this by starting out at 18grns. Not too concerned with 'blowing' up the shot pattern some. Just trying to get to the target as fast as I can. Jim
     
  2. Quack Shot

    Quack Shot Active Member

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    It would be more helpful to know the rest of the load details. Hull? Primer? I would also suggest checking the data posted on the manufacturer's site. That load might be at or above the max, depending on what the rest of the story (LOAD) is.
     
  3. phirel

    phirel TS Member

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    Jim- Please consider your thoughts on "getting to the target as quickly as possible". With a calculator, and ignoring the deceleration of the shot, figure out the time difference for shot traveling a 1150, 1200 and 1250 ft/sec to travel the 90 feet before it breaks the target. With a bit more research, you can see that the faster shot decelerate faster than the shot moving slower.

    Rather than getting to the target as fast as possible, I would suggest considering such things as pattern effectiveness and recoil are much more important than time to the target.

    Pat Ireland
     
  4. Big Al 29

    Big Al 29 TS Member

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    Fastest Promo 1 oz load with a Jammer is 20.5 grains with a Rem209 primer.

    Get you up to 1310fps. 10k plus is the pressure.
     
  5. xringjim

    xringjim TS Member

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    Pat, how is it that you determine your figures? As the other poster pointed out the max is 20.5 on the Alliant site. I saw that too. Please provide more info. Jim
     
  6. StonewallRacing

    StonewallRacing Well-Known Member

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    17.5 gr Promo, an XL-1 in an STS hull with 1 oz of 8.5 makes a helluva nice pattern with very little recoil.

    I see no reason to load it any faster.

    Turns the first bird of doubles into a black cloud of dust....

    SW
     
  7. xringjim

    xringjim TS Member

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    Stone, why not load down to 7/8's. It'll still smoke 'um at 16. Jim
     
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