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farmer7

Invector DS Choke Pattern Pictures

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Hamster
21 minutes ago, Geordieboy said:

Morning Hamster

I know what you're saying chap.  But Full, with my gun and shells is s%#te.  As I shoot registered, I've already proven what works and what doesn't....in my head.  And to that end......I really mean "What gives me confidence". 

So Full stays in the house.¬†ūüėČ

Yes I totally get that you don't get on with Full (generally neither do I), just saying that the reason is 99.9% likely to be  non "mechanical". 

If there is indeed a mechanical aspect to your Full chokes sh*teness then you owe it to yourself to at least buy another LF even without resorting to actually patterning the Full to see the difference.¬†ūüėä

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Jonny English

Josh brown did a pattern test with a fc geurini invictus with some large game cartridges when he was a teague and the 3/4 pattern was tighter and more even than the full choke with it, the full choke was blown to pooh rags, that was with large game loads though.

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Geordieboy
5 minutes ago, Jonny English said:

Josh brown did a pattern test with a fc geurini invictus with some large game cartridges when he was a teague and the 3/4 pattern was tighter and more even than the full choke with it, the full choke was blown to pooh rags, that was with large game loads though.

Interesting!

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Wonko the Sane
6 hours ago, Hamster said:

Admittedly I've never been a fan of Full myself but I have also never believed that they blow patterns, the shot to shot variation from true LF to F will be absolutely undetectable on targets and would take a whole day of patterning to prove on paper. 

My theory as to why Full does in fact produce more than its fair share of chips is that most of us kill most targets with the fringe of our patterns, this fringe is still mighty useful on a Mod but not so on a really tight pattern. 

++1

I suspect that would take far more than a day to prove 

FWIW I'll say again F chokes do not blow patterns - certain not in any Perazzi or Beretta I've ever put on paper. ¬†AFA game loads go I patterned my fave Mirage pigeon gun (0.041" XF)¬†years ago with¬†3 ¬ľ x 1 ¬ľ x 7 ¬Ĺ Federal Gold Medal pigeon loads and at a measured 40yds there wasn't a space in there a mouse could get thru. ¬†That barrel/load killed pigeons at the fence stone dead and that would be at something like 45+meters. ¬†I've seen similar performance from all of my other Perazzi pigeon guns as well. ¬†

Blown Patterns?!?!?!

 I don't think so!

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Jonny English

Josh Browns results while at teague

3/4 choke 121 pellets

Full 93 pellets

in 30" circle at 50 yards.

Screenshot_20181217-163645_Facebook.jpg

Screenshot_20181217-163655_Facebook.jpg

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Oldblaster

At some shoot l use Invector Plus 1/2 and 3/4, when necessary and find them very good, l once patterened them casually to see the difference and could not tell them apart! Practically just like 1/2 and 1/2 chokes. So l don't get caught up with numbers too much, but go for what works for you on the stand.

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AW13

There are some very interesting comments above.

I was suprised by these numbers:

Full = .o38
LF = .o26
IM = .015
M = .009
LM = .007
IC = .002

I found the following on the Browning site which also indicates that their choke designations are differing from my normal understanding of designation vs constriction.

image.png.3e432b2939f6a935d30f85f4c2db2a05.png

The above suggests you need at least 1/2 & 3/4 for a sporting round and maybe even tighter. I have been shooting 1/4 & 1/2 in mine when using DS chokes, no wonder they felt too under choked.  Need to think about this

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Hamster
1 hour ago, Jonny English said:

Josh Browns results while at teague

3/4 choke 121 pellets

Full 93 pellets

in 30" circle at 50 yards.

Screenshot_20181217-163645_Facebook.jpg

Screenshot_20181217-163655_Facebook.jpg

That's hardly blown, it just means that that particular load doesn't keep as tight a pattern as it ought to with that load at that range, besides, to be truly representative you'd need to fire at least ten shots at a pattern plate, in reality that Full pattern will be every bit as effective in the real world, in other words (them missing pellets won't be too far away).

In clay shooting context the notion that Full choke blows patterns is just one of those casually spoken old wives tales. The odd Full choke may throw more open (than a 3/4) with the odd load, but in general they tend to be at least as tight as the looser choke. 

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jwpzx9r

Game of two halfs above the top pattern is well left of centre and the bottom a little right  ... so my conclusion is that is the reason why the 3/4 is showing a better count the full choke is missing a lot of pellets to the left that should have been on the paper :)

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