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Loose primer pockets

I have been seating some Winchester large rifle primers with an RCBS hand priming tool and many of them do not seem to require very much pressure to seat. Are there other brands of primers that have larger cups that would fit more tightly? The primers are not falling out of the cases; and the fired primers don't look bad. I am more concerned with how many reloadings I might get before I need to buy new brass.
 
Were these cases out of your chamber ?
How any times fired ?
About the only time a primer pocket is enlarged is with a hot load.
The Russian primers fit a bit tighter.......
 
All cases are 375 H&H Magnum. The loosest are W-W that I bought from a forum member so I don't know how many times they have been fired, and I don't know anything about previous loadings. They are slightly less tight than a set of R-P cases that have been fired only twice, this being the third loading. All of the reloads in the R-P cases have been very light. I have been making up some light loads for my friend to practice with and to shoot deer and wild pigs: Speer 235gr HotCor SP with 70.0gr of RL-15 gives about 2600fps in his gun, so I would not describe my reloads as remotely hot, but I can't speak for what may have been happening to the W-W cases before I got them. I also don't know how much seating pressure is "a lot" or "a little" except these feel much softer than what I feel when I seat Federal and CCI Match primers in my 6.5/284 and 6mmBR Lapua cases. I've been wanting to test the Wolf primers anyway, so I'll give them a try. Thanks for your advise.
 
I found that the Federal Large Primers are a few tenthousandths larger than the Winchester and the CCI are even a little larger than the Federal. After about 5 to 6 firings with my 6XC using Winchester, I switched to Federals and it is little starting over with new cases. I am up to about 14 firings on some of the 6XC cases using the federals and still feel good while seating.
 
Thanks for all of your responses. I just loaded a few with Federal 210M and CCI BR-2 primers and both were tighter than the WLRs and the CCI BR-2 was the tightest. Much more like what I feel with the same primers in my Lapua 6.5/284 cases.
 

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