First and foremost, these are not my words. They are another members on this site. Sadly, I do not remember who as I did not copy down the name of the original author. If you recognize this post please identify so credit can be given accordingly...
Some excellent information that may help you decide. A copy and paste..
"First off, this post really belongs in the "guns" section. Most of the more knowledgeable slug gun owners keep a closer eye on that forum. That being said. Here is my take.
Secondly, you said "make", to me that implies you are looking for a current production gun. The only two being currently produced are the Savage 210 (400$), and the custom Tar Hunts (2500$).(I'll assume that is out of your expected price range)
Therefore the discussion should be really be about what is available.
You have4 choices in modern dedicated slug guns. The Savage 210 (400$new), Mossberg 695 (300$used), Marlin Slug-master (250$used), Browning A-bolt (1250$used),(I'll assume that is out of your price range as well).
So that now leaves us with three guns.
1)Marlin Slug-master....least accurate, problems with shell feeding, etc. not really a good choice.
2)Mossberg 695....similar to the Savage. It is more cumbersome in the hand. (if you have a problem with the savage chances are you will not like the Mossberg).Mostly importantly, it has a huge detraction. It is ported. I think any serious slug hunter would be foolish to risk their hearing by shooting this gun without hearing protection. (Lets face it very few hunters wear hearing protection in the field). For this reason alone I would never consider purchasing this gun.
3)Savage 210....Most accurate of the three, closest to a rifle in overall feel etc. My personal choice, and one of my two slug guns.(The other being an A-bolt).
Even if you don't like the feel,it must be regarded as one of the best choices.
One other gun that should be considered when discussing dedicated slug guns is the H and R Ultra slug. Of course this is a single shot, and not a very practical field gun. However it is very accurate and may more useful for some specific hunting situations such as stand hunting."