Rifle crowns are so important, but nobody cares about shotgun crowns....

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Macchina

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In a rifle we all are taught the crown of the barrel is there last thing that touches the bullet and therefore it is extremely important for accuracy and consistency. A tiny nick or aggressive cleaning can ruin the barrel.

Then we move to shotguns and the crowns look like a mouth full of British teeth! Between the identifying notches and the wrench knotches I have up to 8 deep cuts on some shotgun crowns! The wrench knotches are even doubled (you only need 2).

Obviously shotguns are far different from rifles but nobody will argue that the crown of the choke tube is still the last thing that touches the wad/shot/slug. Seems like we have a double standard here...

IMG_20200213_175736701_HDR.jpg
 
I'm taking about any screw in chokes! Same chokes go in pumps, autoloaders, O/Us, and single shots.
 
I’d like to see evidence that a notch in the end of a choke has ANY influence on a shotgun pattern or POI, with the much lower pressures, gas volumes per projectile weight, and non-rotating, short distance payloads involved.

the only way my brain can see it having a possible minimal impact is on a slug, and I seriously doubt the influences of the variables involved are statistically measurable.
 
I really want to contribute in a meaningful way but I am curious what SxS you have that takes choke tubes.

I know they are not unheard of but they aren’t that common either.

Ok I will contribute some adjacent data. Brownells does sell a crowning cutter for shotguns. It may be for slug guns in particular but you could still use it to clean up a smooth bore muzzle. So apparently someone cares.
 
I’m going to climb out on a limb here and wonder out loud what’s the problem with screw in chokes on a modern SXS. Takes an old fashion shotgun design and takes into the modern era of one gun capable of
Multi many tasks.
A purist view perhaps. ;)

I think that gun was used in another thread, a 20 (?)
I’d like that in a 12.
 
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I have a Remington Spartan (Russian Baikal) 12 ga SxS coach gun that has screw in chokes. It has never worn anything other than Cyl/Cyl, since I used it for CAS, but I do have a full set. Screw in chokes are pretty much standard in O/U, why would they be considered strange in a SxS?
 
I have a Remington Spartan (Russian Baikal) 12 ga SxS coach gun that has screw in chokes. It has never worn anything other than Cyl/Cyl, since I used it for CAS, but I do have a full set. Screw in chokes are pretty much standard in O/U, why would they be considered strange in a SxS?

Ice cubes in red wine.

If you have to ask, you don't want to understand the answer.
 
We might not talk about crown because the wad cup is around the shot, so if there is a nick in the wadcup, who cares?

Just thinking out loud.
 
I’m going to climb out on a limb here and wonder out loud what’s the problem with screw in chokes on a modern SXS. Takes an old fashion shotgun design and takes into the modern era of one gun capable of
Multi many tasks.
A purist view perhaps. ;)

I think that gun was used in another thread, a 20 (?)
I’d like that in a 12.

I like it. That is why I asked what it was.

@Macchina How do you like it? If you don't mind assisting me in hijacking your own thread.
 
I care about shotgun barrel crowns which is one of the two reasons I use extended chokes. The other reason is to know at a glance what constriction is in the barrel. I have nothing to prove it but believe a nicked crown on a shotgun barrel could cause holes in the pattern, and that’s not a good thing.
 
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I like it. That is why I asked what it was.

@Macchina How do you like it? If you don't mind assisting me in hijacking your own thread.

Love it but just got and haven't fired it yet, getting cabin fever. Just took it apart tonight. I'll post a couple pictures of the internals in the review post on this forum.
 
OP here, I have a lot of shotguns with interchangeable chokes and I always mused about the amount of stuff going on on the crown. It wasn't till I took a picture of this double muzzle that it really struck me how much they cut the ends of the choke tubes.

I don't have an answer either so I thought it would be fun to discuss. The answers so far are perfect. I think the digust over a choke-tubed-SxS only color the conversation more perfectly!
 
After patterning some shotguns for card shoots I found polishing the forcing cones helps the pattern a lot, the chokes I used were all extended and the chokes I made were about 6" long and ported (longer restrictions) and has a 11°crown
 
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