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Shotgun patterning


spandit
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Thought I'd have a look at what my shotgun produces at 25 yards so marked up some bits of cardboard to find out:

 

1) 1/4 choke, #6, 30g

 

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2) 1/4 choke, #6, 29g

 

2bfc247e0f62694021219be47cb6979c.jpg

 

3) Full choke, #6, 30g

 

ac8d580a97c7e95594266f1704eccc6c.jpg

 

Frankly, I can't see a lot of difference between them. I'll try again at shorter range with #5's, I think. At least it proves I can shoot the head off a pin, though!

 

4d783270abe52552a3b402c7709e806c.jpg

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Plenty of holes in the patterns and some clumping of shot, not the best patterns regardless of size of plate and choke.

 

Get plenty of different makes of carts and you will find the ones suited to your gun choke combo.

 

Figgy

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Patterning is quite difficult to achieve at the traditional 40 yards. You need very large target sheets (I have used brown paper). Then you fire 5 (typically) shots from a pre dirty barrel - separate sheets - THEN draw a 30" circle around the densest part of the pattern - NOT around the centre of the target. Then calculate from the counted holes the % pattern achieve (using the number of shot pellets in the cartridge load. Its very time consuming and the slightest breath of wind makes the sheets hard to handle. To do it for several makes of cartridges in both barrels (and possibly with different chokes) is a long exercise!

 

An easier approximation is to go to about 16 yards - and use a steel plate, say a yard square - whitewashed - and photograph and re whitewash between each shot. This gives a good idea of the quality of the pattern, but you can't accurately work out percentages this way.

 

One key point to both is you fire at the plate THEN assess where the centre is. This is patterning. If you are looking at where the centre lies in relation to the aim point, that is more gun fit - and a different challenge!

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Old oil tanks coated with lithium grease make a good pattern plate.30 yds is a good distance to judge relative patterns at I find.

4ft square is big enough to see any difference from centre to edge of pattern with IC and tighter chokes.

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Presuming you had the orange circle balanced on your gun's bead, your pattern is around 70/30 low. Mine is the opposite and was set at 70/30 high!! I will see if I still have the pattern plate photo and will post it. Hopefully, you will see the difference.

 

post-62103-0-72686700-1403621483_thumb.jpg

 

Found it! I was 'aiming' at the dot in the circle (it actually has a light in it). The circle was added afterwards. You can see 70% of the shot pattern is above the POA.

 

If you compare it to yours, much of the shot seems to be bottom right of the POA.

 

 

Edited by Beretta06
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I tend to use a big cardboard box or sheets of wall paper. I shoot at the distance I'm likely to shoot my quarry and see what my pattern is like on the sheet, then decide if its good enough.

 

Done it this way for my steel wildfowl carts and hi flyer choke but put paper over a plywood board forty out to sixty yards as that's the farthest I will shoot them, I was more than happy with patterns, the penetration on plywood at that distance was more with number one shot than with bb which surprised me. Must be down to the size of the pellets surface area. Got very good patterns that no duck or goose would get through, noticed with the 31/2" carts I was going high with my pattern, think its the added recoil pushing me back on firing.

 

Figgy

Edited by figgy
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Guest cookoff013

At that distance sir my cylinder frontstuffers match that!

I can only assume that shell does not suit your gun. Dont mis understand though! That does not mean it wont do the job!

Very often a tight choked gun can be hindered by being to tight!

 

i can just say the same about "open" or "no" choke being an hindrance. that still doesn't mean it cant do the job.

 

speed kills patterns.

lack of shot kills patterns

 

i stopped patterning because i didnt like some of the results. i liked the subs.

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i can just say the same about "open" or "no" choke being an hindrance. that still doesn't mean it cant do the job.

 

speed kills patterns.

lack of shot kills patterns

 

i stopped patterning because i didnt like some of the results. i liked the subs.

Ay? Don't understand where your coming from esquire :/

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