duke5339 Posted October 1, 2012 Report Share Posted October 1, 2012 Now then, will a magnum primer help with slow burning powder, like gm3 special? Quote Link to comment Share on other sites More sharing options...
Guest cookoff013 Posted October 1, 2012 Report Share Posted October 1, 2012 yes ! especially if the load has extremely light shot charge or a light powder charge ! however, i wouldnt recomend using magnum primers unless the recipe actually stated "magnum" primer. Quote Link to comment Share on other sites More sharing options...
duke5339 Posted October 1, 2012 Author Report Share Posted October 1, 2012 Saying that would they help in the winter? Quote Link to comment Share on other sites More sharing options...
Guest cookoff013 Posted October 1, 2012 Report Share Posted October 1, 2012 Saying that would they help in the winter? in winter to do what? your shell / powder selection should be 9-10,000psi whatever the weather, at this pressure it should all burn clean and burn right. and without doubt should easily achieve the published data. thats why i`ve a liking for titewad, can burn down at silly low pressure, even a **** could set it off. if you are having poor ballistics or stuck wads etc, then you need to re-evaluate your data. just going on a whim of using untested recipes or exceeding parameters of published is asking for trouble.you can have a guess at whats happening, but never actually know whats going on. i`ve been wrong a few times, with a couple of reloaded "supposed" recipes (wrong as, i didnt hit expected pressure / speed. it was lower) due to different data types and the different method of gathering the data. so in your case of adding a magnum primer maybe a waste of effort, as some magnum primers only add (*guess*)10000psi or more. whereas if the load is so poor, a magnum primer isnt going to do anything. as for the data you have recieved, it clearly stated "LESS THAN x tons /SQ inch" so it could be anything from 1bar / 14psi (unlikely) to MAX psi / MAX bar (unlikely) if you had physical numbers such as its actual pressure, then we could read into the data more. anything other than that would be just speculation, and i doubt anyone here would be any help. Quote Link to comment Share on other sites More sharing options...
duke5339 Posted October 1, 2012 Author Report Share Posted October 1, 2012 Thanks for that, to be fair I have not tried the 29 grain yet, to see if it helps it burn cleaner i was stuck having acupuncture for an hr, and was mulling a few things over. I did give reddot 24grains 28g fibre a go this weekend, alongside some cheap hull 27g clay carts, i maybe biased but I did like the reddot better. Quote Link to comment Share on other sites More sharing options...
Guest cookoff013 Posted October 1, 2012 Report Share Posted October 1, 2012 you should try the 24 grams of lead. Quote Link to comment Share on other sites More sharing options...
duke5339 Posted October 1, 2012 Author Report Share Posted October 1, 2012 Yes I will, I need to pick up some more wads first. How much effect dose the depth of the crimp have on the pressures? Quote Link to comment Share on other sites More sharing options...
snarepeg Posted October 1, 2012 Report Share Posted October 1, 2012 I put a deepish crimp on mine, not anough to expose the shot, but it then puts a nice taper on, helps with a cleaner burn more so on slowish powder with a lightish load,(when you have nothing else on hand) john Quote Link to comment Share on other sites More sharing options...
duke5339 Posted October 2, 2012 Author Report Share Posted October 2, 2012 Thanks John, I thought it would increase the pressure on slower powders. The new mec 600 I have seems to finish them well. Ta Marcus Quote Link to comment Share on other sites More sharing options...
Vince Green Posted October 6, 2012 Report Share Posted October 6, 2012 I have mixed views about magnum primers. I don't find they seem to make a big difference one way or the other.(if indeed any?) I suppose if they did there would be some idiot blowing himself up and sueing the manufacturers. I still use them where they are called for because you worry if you don't but I suspect a lot of it is flim flam. Quote Link to comment Share on other sites More sharing options...
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