I am low on small pistol primers, and all I could find was Winchester (I use CCI #500 SPP). My load for 9mm is 3.5 gr of 700-X with a 115 gr LRN and a COL of 1.1". Will I need to change the powder charge or seat depth with the different primer? Or are they interchangeable?
Switching Primers, Change Load?
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Reefinmike
Member
Nope, no need to worry about changing anything
gamestalker
member
I don't know what everybody else does, but with handgun loads I don't change a thing or work back up.
Now for high powered rifle, I like to rework those loads, but not because of possible pressure issues, just to make sure I am not missing the accuracy node.
GS
Now for high powered rifle, I like to rework those loads, but not because of possible pressure issues, just to make sure I am not missing the accuracy node.
GS
The book answer is to always work your load back up when changing a component. Following such advise is up to you.
WSP primers are hotter than CCI's in my experience and produce higher velocities with the same loads using the different primers. Your load is right in the middle of Hodgdons data and you probably will not have excess pressure problems switching primers but the load will change, if it will be a noticeable change is just a guess until you try it.
WSP primers are hotter than CCI's in my experience and produce higher velocities with the same loads using the different primers. Your load is right in the middle of Hodgdons data and you probably will not have excess pressure problems switching primers but the load will change, if it will be a noticeable change is just a guess until you try it.
Some primer info from my references, some kinda old but still applicable; http://www.jamescalhoon.com/primers_and_pressure.php
http://www.sksboards.com/smf/index....d98145737a8ee7&action=printpage;topic=56422.0
http://www.sksboards.com/smf/index....d98145737a8ee7&action=printpage;topic=56422.0
Sunray
Member
You should, but not doing so isn't unsafe. Unless you're an Olympic target shooter you probably won't notice any difference anyway.
Winchester markets their primers as being for magnum and standard loads. The 'magnum' part has nothing to do with the cartridge name. Magnum primers are about the powder used.
Winchester markets their primers as being for magnum and standard loads. The 'magnum' part has nothing to do with the cartridge name. Magnum primers are about the powder used.
ljnowell
Member
I know Winchester makes their LPP to do both magnum and regular but the last time I bought them the SPP were still regular and magnum.
http://www.midwayusa.com/product/2900166619/winchester-small-pistol-primers-1-1-2
http://www.midwayusa.com/product/2900117598/winchester-small-magnum-pistol-primers-1-1-2m
savanahsdad
Member
there're NOT, they were, then they were NOT, they might be again , ? , or maybe they stayed the same and CCI got hotter , ? the last testing I saw showed Remington being hotter than both CCI or Win. . another thing is heat -vs- burn time , common sense would tell us that CCI has a mag primer and a standard primer , and Win has one that work for both , that the Win falls in the middle , well common sense would be wrong ! and I may be wrong here but if I remember right , the either/or Win primer is not hotter , it has a thicker cup and a longer burn time , , testing has shown up to 2000 PSI spike when switching from brand to brand or even lot to lot , with some powder. yet stayed the same with other powders , as other have said you are not at max , I'd go ahead a use then with no worries,
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wanderinwalker
Member
In this particular case, I'm another vote to change primers and go shoot. I keep all of my "bulk" reloads in middle-of-the charts ranges and have switched between CCI and Winchester small pistol primers for years. Every once in a while I load some with Remington primers too. The only time I worry about reworking loads with new primers is with either a very accurate load, or a near-max load. And in my case this primarily applies to rifle rounds.
Lastly: in Small Pistol Primers, Winchester makes Standard and Magnum primers. It's only the Large Pistols that are advertised as "for Standard or Magnum Loads."
Lastly: in Small Pistol Primers, Winchester makes Standard and Magnum primers. It's only the Large Pistols that are advertised as "for Standard or Magnum Loads."
ArchAngelCD
Member.
I use mostly CCI and Win handgun primers and I can not notice any difference in performance or accuracy between the 2 company's primers.
ljnowell
Member
Only the Win LPP are either/or. I have yet to see Win SPP that are labeled as both.
savanahsdad
Member
I didn't say they were, sorry for the confusion , I used the either/or reference because a lot of people think all win. primers are hotter because of them , others think Feds. are hotter, I don't know , I tested Rem, CCI and Win and found Rem. to clock the highest Fps. with the lot I have, with the powder I use . this may change with my next lot , I also found REM to group better then CCI BR-2 in a rifle, but since were talking SPP I'll save that for another day
7mmb
Member
At the height of the shortage I had to switch from CCI 500s and 300s to Remington 1 1/2s and 2 1/2s. I reworked up my loads and chronoed them. Velocities were practically identical. Waste of time and money. Different brands of pistol primers don't make as big a difference as even a tenth of a grain of powder does. Use the different brands of standard pistol primers interchangeably.
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