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Rifles, Reloading, Optics, Equipment
Reloading
.270 win. flat primers. high pressure???
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<blockquote data-quote="MNbogboy" data-source="post: 398118" data-attributes="member: 18849"><p>An interesting thought is the factory ammo (Federal) and your handloads both have Federal primers.......I have not used them but all three of my 25-06s, two savages and a rem 700 all show flattened primers when I went to WIN primers during the primer shortage.....No other signs of pressure....with all loads mild to hot....When I finally got some REM primers again the "perceived problem" went away....The head space in the REM is factory set but looser than the tight space I set up on my savages...Headspace is probably not the reason my rifles have been flattening the WIN primers....My opinion is that it is the material in the primers, because the REM primers do not do it at all, and the WIN primers do it with any load and even in a .243 barrel I have been working up a load for..</p><p></p><p>The savage bolt heads as of late are not always perfectly flat at the bolt face and I wonder if the slight cupping allows the WIN material to start moving and then continue on to show as a flattened primer....The rem bolt however is reasonably flat but the extra .001 or so of headspace may again let the WIN primer material stretch and start to flow....</p><p></p><p>My final opinion of my case is to use up the brick of WIN primers (they didn't affect accuracy or show any other signs of pressure) and not worry about it....I will however hold out for REM primers in the future..That is what I have been using for most of my 40+ years of reloading....</p><p></p><p>I could have got a bad lot of WIN primers and another bunch could respond all together different...Just as the Gibbsfan said about the Federal brass....My thoughts always were that the Fed brass was thinner because you could always get more powder in my .308s than with WIN or REM brass..That is why I liked it back then.....I bought a lot of 50 bulk WIN brass last winter from Gander Mountain, that showed signs of head separation after only two firings with mild loads....Again turned out to be a few bad apples in the bunch (10%)...The rest have gone through 4 or 5 more loads (i really check them close now, inside and out)...This was another result of the ammo/component shortage....I believe they were culls and I ended up paying premium price for them.....</p><p></p><p>My advice is to check your headspace first and then try a different brand of primers or factory ammo...</p></blockquote><p></p>
[QUOTE="MNbogboy, post: 398118, member: 18849"] An interesting thought is the factory ammo (Federal) and your handloads both have Federal primers.......I have not used them but all three of my 25-06s, two savages and a rem 700 all show flattened primers when I went to WIN primers during the primer shortage.....No other signs of pressure....with all loads mild to hot....When I finally got some REM primers again the "perceived problem" went away....The head space in the REM is factory set but looser than the tight space I set up on my savages...Headspace is probably not the reason my rifles have been flattening the WIN primers....My opinion is that it is the material in the primers, because the REM primers do not do it at all, and the WIN primers do it with any load and even in a .243 barrel I have been working up a load for.. The savage bolt heads as of late are not always perfectly flat at the bolt face and I wonder if the slight cupping allows the WIN material to start moving and then continue on to show as a flattened primer....The rem bolt however is reasonably flat but the extra .001 or so of headspace may again let the WIN primer material stretch and start to flow.... My final opinion of my case is to use up the brick of WIN primers (they didn't affect accuracy or show any other signs of pressure) and not worry about it....I will however hold out for REM primers in the future..That is what I have been using for most of my 40+ years of reloading.... I could have got a bad lot of WIN primers and another bunch could respond all together different...Just as the Gibbsfan said about the Federal brass....My thoughts always were that the Fed brass was thinner because you could always get more powder in my .308s than with WIN or REM brass..That is why I liked it back then.....I bought a lot of 50 bulk WIN brass last winter from Gander Mountain, that showed signs of head separation after only two firings with mild loads....Again turned out to be a few bad apples in the bunch (10%)...The rest have gone through 4 or 5 more loads (i really check them close now, inside and out)...This was another result of the ammo/component shortage....I believe they were culls and I ended up paying premium price for them..... My advice is to check your headspace first and then try a different brand of primers or factory ammo... [/QUOTE]
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.270 win. flat primers. high pressure???
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