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Velocity effect on shotgun shells.

Mooseyard
How does velocity effect the spread of a shotgun shell. With everyting else being the same will a faster shell spread mor or less than a slower shell?
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9 comments

Date Votes
  • bobski
    on a properly loaded shell, spread is not effected by velocity. choke effects spread. how fast it goes thru the choke just means it gets where its going faster, that all. on the other hand, if your load is undercharged, it just dibbles out and the spread is effected. basically, it doesnt pattern, it just oozes out the bbl in some kind of strange way which cant be called a pattern.[^]

    former air operations officer SEAL Delivery Vehicle Team 2. former navy skeet team, former navy rifle/pistol team member. co-owner skeetmaster tubes inc.. owner/operator professional shooting instruction.
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  • TRAP55
    Bobski, doesn't it affect shot string?

    "Aim small...Miss small"
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  • nord
    Shot string is more affected by the depth of the shot cup. Load an equal measure of shot into a 20ga and a 12ga as an example. The 20 will have a longer shot string.

    Velocity will also affect patterning (normal velocities, that is). Not because of the velocity itself, but because of the chance of more shot deformity as powder loads increase.

    Both string length and minor pattern changes shouldn't be a factor in the real world. I've found that a good shooter who's "ON" will be "ON" with most any load. To the poor shooter there might be some slight difference.

    Nord
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  • Mooseyard
    Thanks guys. This all started with a an argument with a friend that said barrel length has no effect on shot pattern. After I straightened him out on that, he asked me what effect velocity had, and I just sat there going "AHHAHHH??"
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  • TRAP55
    Nord, The Brownings I have with backboring (Invector Plus) have a shorter shot string and a much denser pattern than the ones without.I use high velocity,low pressure, hard shot loads. I've heard multiple explanations as to why, but never one that made sense. Whats your opinion on it?

    Mooseyard, not trying to hijack your thread, just have the same interest in your question.

    "Aim small...Miss small"
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  • bobski
    shot string or length of 'shot swarm' wasnt part of the question. the description of an undercharged load oozzing out the bbl is an example of a long shot string with no spread. or take a piffer fired with no gunpowder and primer only. thats a ooze shot. anyway, as we all know, the larger the bore, the larger the spread. i/e: cyl 12ga w/ 1 1/8oz of shot in it. take a 20ga cyl with 1 1/8oz of shot and the spread will be smaller but the shot string will be longer becasue the same amount of lead must cue up to fit down the smaller bore. thus, a 12ga 1 1/8oz load is a better choice than a 20 ga 1 1/8oz load because it will spread a bigger pattern more efficently. and as we all know, if a 7/8 oz load is used with a 20ga, it will pattern as well as a 12 because less of the lead is cued up in relation to the bore,(less pellets touching the inside bore w/ less pellet deformity.) and so on to 28 ga, 3/4 is better than 7/8 and 1/2oz is better than 3" magnum. hope mooseyard followed me on that![:)]
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  • nord
    Trap55 & BOBSKI -

    No intent to hijack the string (no pun intended). My opinion on backboring, chokes, etc. is that any improvement in patterning will assist the poorer shooter more than the good one.

    Past that I don't really have many thoughts as it's all but impossible to know how a gun really patterns on anything other than a stationary target. Once a target begins to cross or move in a diagonal direction the whole game changes. I'd even hazard a guess that it's possible for a bit longer shot string to have some benefits that we haven't quite considered.

    Back to my original point... When you're on, you're on. When you're not, you miss.

    Nord
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  • bobski
    when you think about it, a long shot string is prefered to assist crossing shots. take a wet paint brush and whip it across a wall. thats what happens when you swing and pull the trigger. the pattern is effected by the swing. take a dart and drop it. thats what happens when you dont swing. yes its elementary, but try to get the picture and it will make sense.[^]
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  • HKman
    I'm sure you fellas have alot more knowledge on this subject than me.I dont shoot skeet I shoot tactical. But to the best of my knowledge it seems the most important thing in getting good patterns is loosing your cup as soon as possible, to prevent it from tumbling through your shot cloud.

    If Im wrong it wouldnt be the first time im sure.[;)]

    AC Tactical
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