.308:
I may be wrong here, but I took what Quick to say was, a person could pick and choose the data and the components listed in that data for his/her loads, not mix, say for instance, Speer bullets with Hornady data, etc.
I know what Quick said was tounge in cheek...What I said... needed to be said for a number of reasons though...and isn't inferring anything against him..
Warf:
Hornady did and has the data in there reloading book. There is data for the 445sm with bullets weighting 180-300gr. in the Hornady reloading manual.
I know..this is why I said..
Sierra and Hornady, they only test their own bullets... are their loads safe...for the gun they were shooting it in...and what they are shooting it in...isn't what your shooting it in now is it..
Anytime your loading for a straight walled pistol cartridge and you are trying to take it to the max..you have to use
extreme caution.The pressures spikes so fast... so fast you don't realize it thru conventional means.Pistol cartridges using fast pistol powders
do-not behave like bottlenecked rifle cartridges achieving higher than normal velocities is and should be to anyone reloading a major warning sign of a potential problem.it doesn't always mean the cartridge is
efficient ... You
have to mike your cases at the web in a couple of areas...not just check for case growth in lenght and...you must have a understanding of what your doing and what to look for...before and after firing them... when working up loads and if there has been any change to the chamber that your working on it or someone else...a chamber cast is needed to be done...since you don't have any idea of what the chamber measurements are to base your findings on and make a accurate judgement...With straight walled rimmed cartridges...primers may or may not be flattened...cases may or may not increase in lenght...depending on how
long the chamber proper is cut..also..if the leade has been reduced or removed..the pressures will raise expotintially higher and quicker than any rifle cartridge will...look in your manuals.... just as the books show what the velocity does for a tiny increase in powder...it will be
much more if the chamber is short..H&R and NEF knows this and this is one of the reasons they chamber cartridges long in them...I have been told this on numerous occasions by different company officials.....Our Handi's aren't Rugers or Remingtons...nor do they have the strenght as even some of the modern Smith & Wesson pistols... they are strong..but only to a point.....extraction usually isn't any issue in a single shot rifle...namely because of the rim and the case being straight walled..it's usually not till you have a case rupture do you know there's a problem because you are headspacing the cartridge on the
Rim...not the shoulder ...this is one of the main problems when maxing out these type cartridges...the 45-70 is this way too...but one of the biggest problems I have with this cartridge is that it is not SAMMI approved...so there isn't a set pressure standard for it...and when folks start exstroplating data from one bullet company to the next...they run the risk of incurring serious problems.No two bullets from different bullet companies have the same bearing surface on them...this is a fact...the bullet companies know it...and this is one of the reasons they tell you
not to substitute components this includes bullets as well...unless you have the correct equipment for measuring the differences...and they are very minute differences...you don't know..and since it is very obvious that even tiny differences in powder weights can cause such a dramatic increase in the pressures...the exact same thing happens when changing bullets with longer bearing surfaces or thicker jackets..You have a larger leeway with normal bottlenecked cartridges...not much by any means...but some never-the-less.. even then it's still not recommended by them..
Like I said...I don't care
how a person reloads for his/her own rifle or what caliber...what I do care about is making sure no-one gets hurt from information posted here.....common sense should be used...when in doubt...call them... Everyone have to realize the vast number of new reloaders that are here as members... also as guest's.... How many folks comes here to our NEF forum looking for load data and help...It's amazing how were growing each day and.. it is our responsability to start these new folks out on the right foot and not hurt themselves,their rifles,or others in the process...we have try to make sure the information posted here is
accurate...and
safe ...and that all the safe reloading practices are adhered to..
I strongly urge everyone to call the bullet and powder companies and talk with their full time ballisticians...these folks reload for a living and know the workings of these cartridges 100 times better than what we can ever know them...This I know for a fact.... I call them all the time...and have for eons...literally...and I trust the data and information they give me,because they have all the pressure data before them on what they have tested..
I'm truly sorry if this has offended anyone...but it is one of those things needing to be said..
Mac
