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 Rio shotgun primers
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JimmyJack
Senior Member

USA
1898 Posts

Posted - 02/12/2013 :  8:56:53 PM  Show Profile  Reply with Quote
Did some housecleaning in my reloading room today and found 3000 Rio primers I forgot I bought. Any comments on them? I heard they miced out 3 or 4 thousands bigger than 209s. shouldnt be a problem unless it makes the pocket too big to go back to 209s.

charliemeyer007
Advanced Member

USA
3268 Posts

Posted - 02/13/2013 :  06:15:37 AM  Show Profile  Reply with Quote
http://www.ballisticproducts.com/Rio-209-Shotshell-Primers-1000_box/productinfo/RIO209/+

Yep they look to be big.

3000 ought to wear out 6 boxes of AA's
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jce12ga
Starting Member

6 Posts

Posted - 03/09/2013 :  9:56:05 PM  Show Profile  Reply with Quote
I have used the Rio and Cheddite primers both in the Remington unibody hulls,( STS, Gun Club, Nitro,...) with no problems. The European primers will mike out about _002-.003 larger than the American primers. Don't try to use the American primers in the hulls once you have used the European primers in them, fit may be loose. In a single shot or o/u it may not be a problem but in a pump or semi you could wind up with a loose primer in the action.

I also made up a real easy tool to check primer fit in hulls. Take a spent US made primer and epoxy it to a short piece of 1/4 inch doweling. If you can't push the primer in over 2/3's to 3/4's of seating depth you are probably OK.

Since my sources for the Cheddite and Rio's has changed, along with prices, I will probably be using the American primers again once my current supply of Cheddites are gone and I will probably toss the hulls.

Been to El Yeti lately?
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peddler
Junior Member

437 Posts

Posted - 03/10/2013 :  2:48:34 PM  Show Profile  Reply with Quote
So if I understand right Cheddite primers are .002-.003 bigger than Winchester primers?
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jce12ga
Starting Member

6 Posts

Posted - 03/10/2013 :  7:24:44 PM  Show Profile  Reply with Quote
peddler,

The Cheddites and Rios are slightly larger but will still seat OK.
Check with a mike or some good dial calipers to your own satisfaction.

I have used them for several years with good results in everything from light 7/8 oz.target loads to 1 1/8 oz. 1450+ fps filed loads.

Been to El Yeti lately?
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