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Seminole Chambermates 12-20 review

3K views 5 replies 5 participants last post by  Easystreet 
#1 ·
I recently ordered a set of 12-20 Seminole Chambermates from Seminole Gunworks. I ordered them on a Monday, and received them on Wednesday of the same week. I was happy to see they shipped them the same day I ordered them.

The package included two 12-20 Chambermates, one bag of standard size o-rings, one bag of oversized o-rings, a small tub of lube, a Chambermates extraction tool, and a plastic carrying case.

The reason they include two different size o-rings is the 12-20 Chambermates are a universal fit. Meaning they will work in virtually any 12ga O/U or SxS shotgun. The different size o-rings are used to adjust for different size chambers.

After carefully reading the instructions (OK, my friend Tim read them) I installed the Chambermates with the standard size o-rings. You simply smear a little lube on the o-ring, and insert the Chambermates as you would any 12ga shell.

The instructions say to use quality shells like AA's or STS's, so of course I wanted to see how they'd work with Estates.

There are reports that the cheaper shells may cause extraction problems. They may swell in the Chambermate and pull it out with the extractor.

I fired about a box of the Estates, and did have some problems. Rather than switch to more expensive shells, I just changed to the oversized o-rings, and that took care of the extraction problems.

After that I didn't experience any other issues. The Chambermates worked flawlessly, and reset the triggers on my Browning 525 without any problem.

We conducted some informal patterning tests and they passed with flying colors. I would have no problem recommending them to anybody else.

Now I can shoot 20ga events without dragging an extra gun around with me.

P.S. I've got a 20ga Browning 425 for sale, if you know anybody.
 
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#4 ·
I've been using the 12-20 & 12-28 for about a year now. I really like them instead of shooting my 20, 28 & 410 Perazzis. The only thing I would suggest is to shoot faster shells in the 28ga. There seems to be some gas loss in 28ga and the faster (1300+) shells seem to compensate for that. They will really crush targets. I also like the fact that I am shooting my "main" gun without adding a lot of weight.

Good shooting
Jack
 
#6 ·
Brad,

You should pattern the ChamberMates with various chokes in your gun. I did that on my 12/20 Chambermates and found that although the same 12 gauge chokes work well for the 20 gauge shells, the patterns are not necessarily the same size as the 12 gauge patterns with the same choke. Also, some of the chokes gave a tighter pattern than expected while some gave a more open pattern than expected.

After doing the pattern work with the Chambermates in place, I wrote it down on a 3x5 index card and put the card in my shooting bag. That way, whenever I use the Chambermates in subgauge events, I just review the notes on the card to tell me what pattern size to expect with each choke.

Easystreet
 
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