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1150fps at 16, but what speed at 27?

Discussion in 'Shooting Related Threads' started by xringjim, Nov 11, 2009.

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  1. xringjim

    xringjim TS Member

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    This is related to another thread but thought it would be better to keep it to one question. If you shoot 1150 at 16yds, what should you load your shells to for 27yds? Jim
     
  2. PerazziBigBore

    PerazziBigBore TS Member

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    1250 on up
     
  3. willing

    willing Member

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    Depends on amount of shot. Chech ATA rules on shot speed.
    Bill
     
  4. Habib

    Habib Member

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    1150
     
  5. zzt

    zzt Well-Known Member

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    I have zero problem shooting 1150 for both, although for purely psychological reasons I prefer 1200fps past the 24.
     
  6. xringjim

    xringjim TS Member

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    Too answer the question of shot size; 1 1/8th is what I throw. At his time I'm using a m-12 full choke to shoot 16 through 27 with. What I want to achieve is the same line of sight with an 1150 load at 16 and then when I go to 27 use the same line of site there. I realise that my pattern will be opened up more at 27. I'm just looking to retain a consistency via a load for 27. Jim
     
  7. rick979

    rick979 Active Member

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    30 yards or 16 yards 1150 FPS will work for both. Ron Alcoriza made the All American team many times shooting AA Superlite 8s for all three events.
     
  8. Andy44

    Andy44 Active Member

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    7 1/2's @ 1200~1225 will crush 'em back to the 27. DownRange TGT-12 for 1oz, and DownRange Versalite for 1 1/8oz.

    AndyH ;-)
     
  9. Jeff P

    Jeff P Well-Known Member

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    I don't know that it matters a helluva lot.

    At the 27 yard line, if you break your target at 27 yards (20 yards out of the house), it will take the shot .1226 seconds to get there at 1150 feet per second.

    If you jack the spped up to 1250, it will take .1128 seconds for the shot to travel to the target.

    That's a difference of .0098 seconds - a little less than a hundreth of a second.

    Which, if the target is going 60 feet per second, means the target moves .588 FEET - or about seven inches in the ADDITIONAL time it takes the slower shot to get there.

    I rarely miss a target by just 7 inches.

    That said, I like a higher velocity - you can break a target with fewer high energy pellets, and you'll get better breaks, and that's good for the pysche...not to mention that it COULD give you a couple extra birds that you'd be just a fraction behind with a slower load.

    My load duplicates Andy's....
     
  10. PerazziBigBore

    PerazziBigBore TS Member

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    while I can't argue with Jeff's numbers.. blindly I've shot 27 yard with 12000 fps.. and shot poorly.. a simple change to 1250 fps.. and I was back in my game.. The .0003 second difference in pull/break.. plays with my head badly.. Nothing to do with the shell at all... either will do a fine job..just the timing for me.. YMMV.. All Good.. Mike
     
  11. OGC Director

    OGC Director TS Member

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    I use 1145 for 16's and I seem to break targets better with 1255 at 27.
     
  12. phirel

    phirel TS Member

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    Jeff P- I don't have a real problem with your conclusions but I do have a problem with your numbers. They seem to ignore that both the shot and the target slow down significantly after leaving the house and barrel. The target is traveling about 35 MPH 20 yards from the house. Shot that began at 1200 ft/sec has slowed down to about 1000 ft/sec at 40 yards.

    Pat Ireland
     
  13. Loyac

    Loyac Member

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    1 oz. 1180 16-21 yards. 1 oz. 1235 the rest of the way... John
     
  14. comp 1

    comp 1 Well-Known Member

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    Am I the only person who can see a lag time before the target breaks at 27 yds when using 1145 fps shells? I like at least 1200 fps for the longer handicap ydgs simply for that reason--I agree that 1145 fps or a little slower will still break the targets efficiently.
     
  15. phirel

    phirel TS Member

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    Jeff- My figure of 1000 ft/sec should be 625 feet per second.

    Pat Ireland
     
  16. threedeuces

    threedeuces TS Member

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    I load all my shells at 1200'. weather it is a 3/4 oz.,7/8 oz. or 1 oz. they all get the 1200' per second treatment.
     
  17. grnberetcj

    grnberetcj Active Member

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    7-1/2's @ 1250.

    Curt
     
  18. Jeff P

    Jeff P Well-Known Member

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    Pat, you're right...I'm definitely not accounting for the slowdown in the shot string due to air resistance. My calculation was much more "back of the envelope" than all that.

    but I'll be a bit stubborn and argue that both strings of shot are slowing down at roughly the same pace, so wouldn't the difference in arrival time remain somewhat relative? And the fact that the target is slowing down...means it will move even less distance in the additional time it takes the slower load to get there, relatively.

    If I'm wrong, just tell me....wouldn't be the first time.

    Comp...I, too, at least "think" I can see the lag time in a slower shell versus a faster one. Standby, though, someone will be along shortly to tell us its the same as perceived recoil between loads using different powders.
     
  19. PerazziBigBore

    PerazziBigBore TS Member

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    Jeff P.. Comp1.. I say pull..........break and not pull/break. Your wording is right LAG time.. I see it.. and it screws with my head... You are not alone..
     
  20. BigM-Perazzi

    BigM-Perazzi Well-Known Member

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    I've often been told, and agree with, the perception is more due to recovery from recoil than anything else....the math says they basically arrive at the same time... only the recoil numbers are substantially different...

    that being said, 1225-1250 does seem to be my ticket for caps..
     
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