Okay,
I just happen to have a hundred or so new chokes laying around and that includes Remington and Hastings.
A new Remington 20 gauge improved cylinder has the exact same notches as a Hastings 12 gauge coke.Thread pitch looks the same too. Obviously, overall diameter is different.
The notch size is roughly .101 or 2.61 mm, which is roughly the width of 10 or 12 gauge plate steel, I forget which.
I looked around in my garage trying to find a good makeshift tool from something common everyone would have made from plate steel.
I found it.
If you remove the dogs from a Husky 372, make that any 372 to probably 3120 series, part #5035907-01 D, you will find this fits perfectly in the Hastings choke and makes an excellent handle holding the dog spikes away with the extension held in your palm. With the flat part of the dog laying across both notches in the choke.
It is an exact fit and you will not be bending the dog anytime soon
The only websites I own to link to for a photo, are all political, so, I am linking to a picture of the "tool" here, go to the second photo:
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=196134160
An admin can just place the image in the post for me, I can't seem to find an icon for it.