malkiserow Posted July 15, 2014 Report Share Posted July 15, 2014 Does anyone understand and can explain in simple terms the actual difference in reloading with N150 versus N550? What felt recoil difference is there? What velocity difference is there? What fill level difference is there? What Flash difference is there? Are there any more differences I've forgotten? Quote Link to comment Share on other sites More sharing options...
Guest cookoff013 Posted July 15, 2014 Report Share Posted July 15, 2014 Don't over think it. Just follow recipe. Quote Link to comment Share on other sites More sharing options...
malkiserow Posted July 15, 2014 Author Report Share Posted July 15, 2014 Just trying to learn more...... Quote Link to comment Share on other sites More sharing options...
kent Posted July 15, 2014 Report Share Posted July 15, 2014 550 etc will burn your barrel out quicker (despite the claims) they burn at higher temperature Quote Link to comment Share on other sites More sharing options...
Bewsher500 Posted July 17, 2014 Report Share Posted July 17, 2014 additional nitro glycerine added to the nitro cellulose depends entirely on application and burn rate as to effects N150 is a fast powder already N550 increases the energy delivered in the ignition and expansion use it in an overbore cartridge/calibre and yes, you will may see higher temps ......wouldn't discount it as a barrel burner as that comes down to so many other factors Quote Link to comment Share on other sites More sharing options...
malkiserow Posted July 17, 2014 Author Report Share Posted July 17, 2014 additional nitro glycerine added to the nitro cellulose depends entirely on application and burn rate as to effects N150 is a fast powder already N550 increases the energy delivered in the ignition and expansion use it in an overbore cartridge/calibre and yes, you will may see higher temps ......wouldn't discount it as a barrel burner as that comes down to so many other factors So if N550 is quicker than N150 how does it compare to the faster N140? Quote Link to comment Share on other sites More sharing options...
kent Posted July 17, 2014 Report Share Posted July 17, 2014 Don't get speed an energy mixed up, Greater energy / intensity = Greater heat in my book Quote Link to comment Share on other sites More sharing options...
Kes Posted July 17, 2014 Report Share Posted July 17, 2014 Try this and particularly the post from 'Laurie'. http://ukvarminting.com/forums/topic/18886-single-vs-double-base-and-barrel-life/ Quote Link to comment Share on other sites More sharing options...
malkiserow Posted July 18, 2014 Author Report Share Posted July 18, 2014 Thanks Kes, an excellent read.... Kent, is that you in the link above? Quote Link to comment Share on other sites More sharing options...
kent Posted July 18, 2014 Report Share Posted July 18, 2014 I don't click on links anymore, what I can say is there is always a price to pay for more velocity- its up to the individual to decide but don't listen to all companies say when they are trying to sell something proving their claims to be untrue can be very hard Quote Link to comment Share on other sites More sharing options...
Kalahari Posted July 18, 2014 Report Share Posted July 18, 2014 I was always under the impression that the real reason for using double base powders was that they performed better at the extremes of temperature. May have got it all wrong though. David. Quote Link to comment Share on other sites More sharing options...
Underdog Posted July 18, 2014 Report Share Posted July 18, 2014 So if N550 is quicker than N150 how does it compare to the faster N140? faster powder dont mean it gives higher velocity to the bullet.It means it burns a little quicker. So pressure is developed'faster'. As a general guide the faster the powder for a cartridge the more care is needed to avoid excessive pressure. The slower generally however with some exceptions are more forgiving. A friend of mine has used some of the viht 5OO series in his 22-250...the barrel does get warmer! Gone back to Hodgdens again! Quote Link to comment Share on other sites More sharing options...
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