Dlsvt Posted April 29, 2012 Share Posted April 29, 2012 After a lot of reading I worked up a WAC load. Once I got to 7.0 grs the primers are as flat as can be. Cases show no signs of pressure. Is this ok? My setup is a glock 17 with carver 4 port. Load was 124 Montana cmj, federal spp, once fired federal brass, 1.145 oal Link to comment Share on other sites More sharing options...
Jonathan Taliani Posted April 29, 2012 Share Posted April 29, 2012 (edited) Can you post pics? Federal primers are very soft and will tend to show more flattening. What power factor or velocity were you getting? That sounds fairly short for needing 7.0 grains. I'm getting ~171PF at 1.165 with 124gr MG JHPs. That's out of a 5" barrel though. Edited April 29, 2012 by Jonathan Taliani Link to comment Share on other sites More sharing options...
Dlsvt Posted April 29, 2012 Author Share Posted April 29, 2012 Right at 1370 or 170pf. Had some chrono issues after a couple shots. Are jhp shorter or about the same? Today was the first day I have tried federal primers.. Was using cci. Seems like Winchester srp and spp are popular on here. any preference between those? Link to comment Share on other sites More sharing options...
Steve RA Posted April 30, 2012 Share Posted April 30, 2012 Try small rifle primers, hardest are probably ones specifically for .223/5.56. Make sure whatever gun you are using will ignite them consistently. Link to comment Share on other sites More sharing options...
buckaroo45 Posted April 30, 2012 Share Posted April 30, 2012 Winchester or CCI small rifle primers is the best way when loading 9MM Major. Link to comment Share on other sites More sharing options...
Dlsvt Posted May 1, 2012 Author Share Posted May 1, 2012 Thanks for the tips. I will make the switch. Link to comment Share on other sites More sharing options...
Dlsvt Posted May 1, 2012 Author Share Posted May 1, 2012 Can you post pics? Federal primers are very soft and will tend to show more flattening. What power factor or velocity were you getting? That sounds fairly short for needing 7.0 grains. I'm getting ~171PF at 1.165 with 124gr MG JHPs. That's out of a 5" barrel though. I didnt keep any to take pics. Link to comment Share on other sites More sharing options...
Jonathan Taliani Posted May 1, 2012 Share Posted May 1, 2012 Right at 1370 or 170pf. Had some chrono issues after a couple shots. Are jhp shorter or about the same? Today was the first day I have tried federal primers.. Was using cci. Seems like Winchester srp and spp are popular on here. any preference between those? It is going to vary, but generally in my experience, JHPs call for more powder when set to the same length. I have used all of the above with success. Hardness from softest to hardest is Federal, Winchester, and then CCI (comparing type to type). Be careful not to mask over pressure warnings by using hard primers. Some flattening is going to occur with major loads. Can you post pics? Federal primers are very soft and will tend to show more flattening. What power factor or velocity were you getting? That sounds fairly short for needing 7.0 grains. I'm getting ~171PF at 1.165 with 124gr MG JHPs. That's out of a 5" barrel though. I didnt keep any to take pics. Without pics, it's just speculating, but it sounds like you are probably okay. Federal primers do tend to show the most flattening. Link to comment Share on other sites More sharing options...
Jonathan Taliani Posted May 1, 2012 Share Posted May 1, 2012 You may want to play with your overall length to see what the max length is for your mags and barrel. Allow yourself a little bit of wiggle room to accommodate variation. Longer OAL will help to minimize the pressure spike of a relatively fast powder. Link to comment Share on other sites More sharing options...
Chris Keen Posted May 1, 2012 Share Posted May 1, 2012 After a lot of reading I worked up a WAC load. Once I got to 7.0 grs the primers are as flat as can be. Cases show no signs of pressure. Is this ok? My setup is a glock 17 with carver 4 port. Load was 124 Montana cmj, federal spp, once fired federal brass, 1.145 oal Use Small RIFLE primers, not PISTOL primers when loading for Open. Fed. SRP are the preferred primer for most Open shooters. They should not show any signs of flattening out. Link to comment Share on other sites More sharing options...
Sarge Posted May 1, 2012 Share Posted May 1, 2012 Use Small RIFLE primers, not PISTOL primers when loading for Open. This. While some will tell you that SRP's only hide overpressure signs in reality nearly all Open loads are over what they were intended to run at. Even the 38Supers are running above factory offerings let alone the 9MAJORS. Link to comment Share on other sites More sharing options...
Chris Keen Posted May 1, 2012 Share Posted May 1, 2012 (edited) Agreed. Federal SR primers don't mask over-pressure signs, but they are themselves, a little bit harder than Federal SP primers. They were initially used when the old PF was 175, and primer flow was a common occurrence. Either way I wouldn't expect to see any signs of primers flattening out. Flattening out is not only a sign of over-pressure, but the act itself can be detrimental if primer flow gets into your firing pin hole (or worse). I've used Pistol primers in a pinch, but they aren't my "go-to" primer choice. Winchesters are every bit as good as Federals, but Federals are markedly softer, and therefore give more reliable ignition. But any open gun with a 17 lb. main spring should light a Winchester reliably, as much as a Federal. Edited May 1, 2012 by Chris Keen Link to comment Share on other sites More sharing options...
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