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  • How to identify a shotgun press setup?

    Posted by james on November 8, 2021 at 5:47 pm

    Just curious as to what the easiest way of determining what a shotgun reloading press is set up for. I’ve recently come into possession of a ton of shotgun presses and I’m having difficulty nailing down how many differences there are on the machines. As far as my mind goes, I think each set of installed dies are specific to a gauge, and length? Or is it just gauge?

    It was acquired from a friend who’s father passed so unfortunately I have nobody with experience to really ask. I’ve never reloaded shotgun before, though I do my own rifle loads. I don’t really know how interchangable all of the die pieces are. I don’t really see a whole lot of markings, so Im not sure if theres a way to flat out know what its all of without just measuring it all.

    The presses I got:

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    james replied 9 months ago 2 Members · 1 Reply
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  • marcuccione

    November 8, 2021 at 5:47 pm

    The three on the right are MEC 600 series presses. The other two in the front look to be Ponseness Warren presses (I think). The Red one in the back left, might be a MEC or a pacific press, but I am definitely guessing there. The one without bottles is also a MEC. The gauge is probably written on the press somewhere (most likely on the base).

    Each press is usually set up for a certain gauge, and is not usually interchangeable. The charge bars and the bottles for the MEC presses are interchangeable. Items between brands are not interchangeable.

    For reloading shotgun, I suggest getting the Lyman 5th edition shotshell manual. The loads listed are the max/min loads and there is no experimentation. I would read the manual a few times to understand it better.

    I’m probably not helpful, but hopefully someone will shine a light on what the presses are. I only load 20g mostly.


    scroll down a few posts and someone posted a pacific press.

  • DonBosman

    November 8, 2021 at 5:47 pm

    This is one of the times that reading old manuals is very helpful. Since I grew up when the old manuals were new, I’ll offer my opinion. The MECs are easy to see or find out. Manuals are still available at [](

    I think you have one MEC 600 Jr of some vintage, one Versa MEC, possibly 700, The third will take some looking up. I think you have two Ponsness/Warrens that appear from this angle to be an 800 Size-o-matic and one that may be a Du-O-Matic.

    In any case they are in superb condition. The bottles on the MECs appear to be unused.

  • Parking_Media

    November 8, 2021 at 5:47 pm

    Almost the same situation as I was in a year ago! Learned lots and I’m happy to share but I need to sleep. I’ll chip in tomorrow with some info if you’d like as well.

  • Dinoburb2

    November 8, 2021 at 5:47 pm

    The two Ponsness-Warren loaders are very good reloaders and very expensive even used. The Size O Matic is a progressive most likely 2 ¾”, 12 ga and the DuoMatic is a single stage. I’m unsure of the gauge though. I’ve had an 800 (Size O Matic) since 1971 and several 375 (DuoMatic) in 12, 16, &20 gauge. Great loaders. If you reload shotgun those are the two to keep if they are suitable for your shooting.

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