See if you can find a Dealer that has one in stock and just look at barrel markings. You could also just call Remington for clarification.
As for "internet haters", There will always be those. Unlike manufacturers who advertise a product and can be held accountable for their claims, "Internet Haters" can just put out anything they want with no accountability.
As for "slugging" a barrel to determine twist rate, there's a much easier method. Wrap a patch around a bore brush so it fits the bore pretty snug. Pusj it into the bore from the chamber end until it's almost to the muzzle. Put a piece of tape on your cleaning rod at the open end of the action with a piece of tape forming a "flag" pounting straight up. Pull the cleaning rod out of the barrel, watching the tape "flag. When the "flag has completed one rotation and is pointing straight up again. measure the distance from the open end of the action. This travel in inches is your barrel's twist rate. For this to be reasonably accurate you have to make sure the patch is really snug in the bore but no so snug it get's stuck. I usually put a few drops of gun oil on it so it will move easier.
Slugging is merely driving a piece of lead (I use fishing sinkers) into the bore so you can measure depth of grooves and bore diameter.