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Discussion Starter · #1 ·
I'm a bit confused in P choke designations. In their chart they have IM and M both marked as 1/2 and triple dot in a circle for barrel marking for both.
So what would be the difference between 1/2 Mod and 1/2 Imp Mod?

1759543
 

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Discussion Starter · #3 ·
Multiply each choke number by 4 and that will give you the amount of choke.
#5 x .004 = .020
#6 x .004 = .024
My 32 inch fixed choke has .024 in the bottom barrel and .032 in the top barrel.
Devonian.
it's a fixed choke barrels o/u Bottom barrel marked 3 dots in a circle, top barrel marked 2 dots.
There's no numbers


BTW do you shoot steel target loads out of your barrels?
 

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I'm a bit confused in P choke designations. In their chart they have IM and M both marked as 1/2 and triple dot in a circle for barrel marking for both.
So what would be the difference between 1/2 Mod and 1/2 Imp Mod?

View attachment 1759543
100 grams of bbl weight.
 

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I meant constriction wise since they both claim to be 1/2
Look at the chart itself. Names are irrelevant given the math. Go by measurements if unsure. If you look at bbl weight vs label it will tell you if you have a 5 mm or a 6 mm restriction. 6 mm bbl is 100 gm lighter than a 5 mm bbl.
 

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Look at the chart itself. Names are irrelevant given the math. Go by measurements if unsure. If you look at bbl weight vs label it will tell you if you have a 5 mm or a 6 mm restriction. 6 mm bbl is 100 gm lighter than a 5 mm bbl.
You are reading that chart incorrectly.

Each row does not correlate all the way across, otherwise the 2nd row would indicate a set of barrels that weigh 1oz...

The far right block simply indicates a grams to lb conversion for total gun weight, a little poorly laid out graphic design work I'll admit.

There is no way .004" (.1mm) LESS constriction in each barrel adds 100 grams (3.5oz) of weight to the barrel. There are also no barrels in existence that weigh almost 9lb.
 

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One more reason to buy a Krieghoff :unsure: 🤣
 
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