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Pattern Test

Discussion in 'Shotguns (SGC)' started by bob4026, Nov 5, 2020.

  1. bob4026

    bob4026 Nobody's Hero

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    Think I’m gonna test a few cartridges, see what my spreads like. What do you guys recommend, 25, 30 or 35 yds, and what sort of choking?

    cheers

    bob
     
  2. Chouchin66

    Chouchin66 Major Poster

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    Depends, hunting or clays...hunting - modified choke, clays - improved cylinder( sorry , don't know British nomenclature) ...pattern @ 35 for modified , 25 for I.C.

    .
     
    Last edited: Nov 5, 2020
  3. Storcky

    Storcky Keyboard Hero

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    Might help if we knew.
    Type of gun, O/U, S/A or SxS.
    Gauge of gun, 20, 12, etc
    Use of gun, clays, hide, etc.
     
  4. Buckshot

    Buckshot Posting Addict

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    40 yards is the normal range for finding out what the chokes are performing like for percentage, eg 70% of the payload in a 30" circle is considered the norm for a full choke pattern.
    Try all choke tubes at that distance for comparison purposes.
     
    plinker20 likes this.
  5. bob4026

    bob4026 Nobody's Hero

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    Yeah sorry boys. Bit stingy with the info there eh?

    12g O/U
    B525SL
    Mainly clays, but occasional duck shooting. I'm currently running 1/4 and 1/2 which i believe is IC and Mod for our brothers over the pond.

    Cheers

    Bob
     
  6. Storcky

    Storcky Keyboard Hero

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    Nothing wrong with your choice of gun, chokes and sport, 1/4 and 1/2 is a safe option, all you need now is a cartridge that you get on with and patterns well.
    Hull Superfast 7.5 x 28’s are very good clay busters I have found, and for your occasional duck foray your looking for Steel in 4’s or 5’s x 32/36g.
     
    bob4026 likes this.
  7. jesim1

    jesim1 Kit bitch to the Stars

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    Get a roll of wall paper and see what you get with different shot and at different ranges - it a big difference so not as straightforward as you might think.

    I used to use 1/2 and full on my gun for everything as it was not adjustable, but fine for my use. I used to use a 5 for pigeons, a 6 for clays and a 4 for ducks. I never shot geese, but 3" shells and BBs would be my thinking if your gun will take them :thumb:
     
    bob4026 and Chouchin66 like this.
  8. Chouchin66

    Chouchin66 Major Poster

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    Completly concur, only to add...7.5 for partridges or quail.

    .
     
    jesim1 likes this.
  9. Figgy

    Figgy Big Poster

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    Test them at 25 yards and 40 yards, see what they're doing. Try different carts too, can be more than a degree of choke different just with carts.

    If I'm testing patterns, I test at the ranges I'm most likely to shoot. Also if you can test at 50 yards and see how they perform.
     
    talent and bob4026 like this.
  10. Mortimer

    Mortimer Very Active

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    @Jesim 's wallpaper is what I used to do. Use clothes pegs to clip it to a wire fence and move along the length for different ranges, chokes, cartridges. I found it was the quickest way. You can label the patterns with a felt tip as you go along.
    Choose a calm day.:D
     
    bob4026 and jesim1 like this.
  11. Suffolk1

    Suffolk1 Engaging Member

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    If you use steel for ducks use open chokes. If you don’t it’s possible to split your barrels.

    BB on geese?

    When I was 15 I had a 20g an used 26g 5’s on Canada geese. Aim at the head not the body!
    Always dead. Sadly I don’t have any duck or geese shooting on my permissions now.
    Regards Dan


    .
     
    bob4026 and Popgun like this.
  12. Figgy

    Figgy Big Poster

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    Never seen a split barrel due to tight chokes with steel carts.
    I put BB and BBB through xtra full Briley choke in my auto along with plenty of other wildfowlers, some of which use even tighter chokes with big steel.
    Not one split barrel in all the years since steel came in.
    It will eventually open the choke out by swaging it.
    My gun has overbored/backbored barrel so the cart and shot charge are not as tight as in a nominal 18.3mm gun. If mine is say 18.7 I'm already nearly a half choke bigger just in bore size, choke restriction is still 40"thou or 1mm smaller than the bore.
    Pattern and shoot what your cart and choke combo shoot best.
     
    Last edited: Nov 9, 2020
  13. Suffolk1

    Suffolk1 Engaging Member

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    I’m only going on the barrels I’ve been shown by my gunsmith who is very well known.
    He won’t use steel.
    A SA is probably built with a thicker barrel to start with as usually have bigger chambers


    .
     
  14. Figgy

    Figgy Big Poster

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    See if you can find the program where a Danish shooter is explaining how even with old Damascus barrels in use not case of split barrels has ever occured. They use much faster carts than we do, 1800.00 FPS is normal
    Gunsmiths can be great at this won't use steel it's bad, it's the future whether we like it or not.
    Johnny on the gun shop tests steel in old guns with a wildfowler who is a fellow member on another forum. His sxs has a slight bulge in one barrel, cause unknown. They shoot steel through it measure and inspect it, no change a year later and many steel carts still no change.
    Barrels are split by blockages, either a small bore cart down it or more usual a wad from a duff cart or mud in the muzzle.
    There have been tests done to see at what point barrels fail, it's usually past 100.000 psi before they see any changes to the barrels
     
  15. ratman60

    ratman60 Pro Poster

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    Hello, 30 yards in a 30 inch circle I found best but that was in the 1970/1980s, that is what our clay pigeon club test pattern board
     
  16. Figgy

    Figgy Big Poster

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    I'm pushing homeloads 42g BB & 40g of BBB at 1500 FPS to past 50 yards on flighting geese. The patterns need to hold up and only tight aftermarket chokes work for me and many others, but as I put in earlier post my gun has overbored barrel so not sqaushing the shot through as tight a hole as nominal bored guns.
    At 30 yards I use half choke and 34g 3 shot, holds enough for clean kills without mincing the bird.
    Patterning is a big thing for us as an extra grain of powder can blow the pattern so dialling back powder to the best pattern is what works.
    I've used a kicks highflyers half which shot BB carts very well, lead for game was good but only just ok for close spashes on duck with smaller steel shot. If ranges went further it was useless for duck.
    I use whichever choke for the quarry I'm after, ducks half and geese full choke with my chosen carts.
    Try some modern steel through the tighter chokes, it may surprise you.
     
  17. Buckshot

    Buckshot Posting Addict

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    You're quite right about the chokes Bob,1/4 and 1/2 is as near as damn it imp.cyl, and mod.
     

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