12ga Remchoke Inside Diameter?

0faustus0

0faustus0

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I have an extended 12ga Full Remchoke from Carlson and another one from Trulock, and both are marked as 0.700.

However, my online research leads me to believe that a Remington's 12ga Full choke is 0.687 .... ?
(see table below)

So, I am wondering .... has anybody an authoritative source of what the inside diameter of genuine Remington Remchokes are?

I mean 0.700 and 0.687 is a big difference .... like the difference between a Modified and a Full.

So what is it?


choke-tube-diameter-table-chart-sizes-2.jpg


Link


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Calson_Rem_Full_Choke.jpg


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what are the odds some genius calls .687 as .7, then someone else adds decimal places back to it?

Is .013" the safety factor to allow for steel shot?
 
When steel shot and some of the even harder options(tungsten) of shot started being used, constrictions had to be enlarged for safety reasons. It’s why they indicate what specific shot can be used. Lead is soft so tighter constrictions can be used but steel and tungsten do not compress so tighter constrictions can cause gun damage or worse. It’s why there are so many variations in turkey chokes. The ones for lead only have much tighter constrictions! Hope this helps
 
I measured my factory issued flush Rem Chokes years ago. Full was .700, Mod was .710, IC was .718, Skeet was .732. Bore diameter in 3 different barrels was always .728. The taper of the choke cone can vary from one maker to another to achieve the same result with different internal diameters so actual patterning is the only way to be sure of the downrange result you were hoping for.
 
I was maybe wrong - instead of being an absolute size, I thought "choke" was a constriction - a reduction in diameter - from the bore size. So, actually need to know the bore size plus the choke tube diameter - and apparently one maker to another is not the same about what size is a "bore" for any particular gauge. But, choke tube makers seem to have convinced customers to just buy a specific dimension and then they will have ???? As per Post #4 - have to pattern your unit to truly know what you have. Does not really matter what some Seller will call it - is how many and where are pellets hitting on your patterning board test that determine what is the performance that you are getting.
 
Ok, I ordered a digital caliper .... and it arrived today.

My Remington "Remchoke" flush Improved Cylinder choke measured .716

And I have two Remington "Remchoke" flush Full chokes here ... one measured .686 and the other measured .687

(All those chokes were bought new around 6 years ago.)

I guess I have my answer ... that table in my first post seems to be correct.

And now I understand why there is such a big difference in patterns between my original Remington Full and the Carlson and Trulock Full chokes ....

The Carlson and Trulock Full chokes .... are basically Modified chokes .... :-(
 
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Is maybe playing with words - those Carlson and Trulock chokes might deliver "full choke" patterns in a different bore size - in a different barrel than you have them in. - "basically Modified chokes" - I think you mean they deliver modified choke patterns (?) from the barrel that you tried them in. Up to a certain point, I do not think it really matters what brand they are, or what their actual measurements are, without knowing the rest of it - for most of us, what gets delivered on target is what matters.
 
Potashminer said:
Is maybe playing with words - those Carlson and Trulock chokes might deliver "full choke" patterns in a different bore size - in a different barrel than you have them in. - "basically Modified chokes" - I think you mean they deliver modified choke patterns (?) from the barrel that you tried them in. Up to a certain point, I do not think it really matters what brand they are, or what their actual measurements are, without knowing the rest of it - for most of us, what gets delivered on target is what matters.
Click to expand...

Potashminer, I am pretty sure I will get the same patterning results from my other 5 factory Remington (Remchoke) barrels and with those same chokes .... ;)

I think I will spare myself the work and money .....
 
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0faustus0 said:
Potashminer, I am pretty sure I will get the same patterning results from my other 5 factory Remington (Remchoke) barrels and with those same chokes .... ;)

I think I will spare myself the work and money .....
Click to expand...

I am pretty sure that you are correct - those other five barrels likely very similar bore dimension - can be very different with another brand or era of shotgun, though. No doubt those chokes are threaded to fit your Remington - but nothing says other brands do not use similar threads, or maybe whole thing is "marketing" - same product with different threads on outside - will be someone, somewhere, who uses them and claims he is getting "full choke" patterns, and they might be!
 
Potashminer said:
I am pretty sure that you are correct - those other five barrels likely very similar bore dimension - can be very different with another brand or era of shotgun, though. No doubt those chokes are threaded to fit your Remington - but nothing says other brands do not use similar threads, or maybe whole thing is "marketing" - same product with different threads on outside - will be someone, somewhere, who uses them and claims he is getting "full choke" patterns, and they might be!
Click to expand...

Makes total sense to me .... because somebody somewhere and with some weird barrel configuration might get a pattern that resembles a Full choke. Thats why those chokes are labled as "Full".

All pretty logical ...
 
Potashminer said:
I was maybe wrong - instead of being an absolute size, I thought "choke" was a constriction - a reduction in diameter - from the bore size.
Click to expand...

That has always been my understanding as well.

I grabbed this graphic from Extreme Chokes (not sponsored) and it seems to confirm what you are saying. The interesting thing would be to measure the bore and constriction of some of the "back-bored" shotguns to see what their constriction is compared to the actual bore of the gun. Given that not all companies back-bore their guns there could be some chokes that seem oversized for the name on the side, but are in fact the "correct" amount of constriction. Browning bores their barrels (allegedly) to .742" which would mean that a full choke would mic .707" which would be a full .030" looser than what the OP's research would indicate for a Remington full choke.

Choke_Constrictions.png
 
Were the .686 ID chokes marked for lead only or not for steel? A .686 choke in a .728 barrel is .042 constriction which most would consider a "Extra-Full" or a "Turkey" choke for lead only and much too much choke for steel.
 
That is surprising to me that Remington would put that much constriction in any choke for steel. One of the first .700 "Full" flush Remchokes I had actually split lengthwise from shooting steel loads. Fortunately the barrel was not damaged and the choke was replaced under warranty. I suggest you shoot a couple of patterns using the ammo you plan to hunt with and using the various chokes you have so you can decide which functions best for your purposes. Good luck.
 
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