JockStalk Posted July 24, 2020 Report Share Posted July 24, 2020 Maybe a daft question, but if I was to use a Smaller neck sizer for my fired brass Eg a .223”, so giving me 20thou smaller diameter. Would this be a bad thing? Quote Link to comment Share on other sites More sharing options...
miki Posted July 24, 2020 Report Share Posted July 24, 2020 Most likely. 2 or 3 thou (.002 to .003) is normal not 20 .... as neck tension increases so does the rise in pressure Quote Link to comment Share on other sites More sharing options...
DaveT Posted July 24, 2020 Report Share Posted July 24, 2020 If you mean that you have a 243 Win...please don't give it 20 thou neck tension! Quote Link to comment Share on other sites More sharing options...
Andrew Posted July 25, 2020 Report Share Posted July 25, 2020 Bad. Good luck seating the bullets, too.~Andrew Quote Link to comment Share on other sites More sharing options...
Woodlander Posted July 25, 2020 Report Share Posted July 25, 2020 7 hours ago, Andrew said: Bad. Good luck seating the bullets, too.~Andrew I think you’d strip the jackets right off. Why did you think this may be a good idea? Quote Link to comment Share on other sites More sharing options...
Re-Pete Posted July 25, 2020 Report Share Posted July 25, 2020 It is a VERY daft question, and would probably result in a split case neck or collapsed case shoulder. As already mentioned, if you did manage to seat the bullet, the resulting pressure spike could prove "interesting"...............have you done much reloading? Pete Quote Link to comment Share on other sites More sharing options...
JockStalk Posted July 25, 2020 Author Report Share Posted July 25, 2020 Discussing with another who had been recommended to neck size 243 with 220 swift Lyman M die. Seemed a bad idea but thought I’d see if I was missing something! Quote Link to comment Share on other sites More sharing options...
JockStalk Posted July 25, 2020 Author Report Share Posted July 25, 2020 4 minutes ago, Re-Pete said: It is a VERY daft question, and would probably result in a split case neck or collapsed case shoulder. As already mentioned, if you did manage to seat the bullet, the resulting pressure spike could prove "interesting"...............have you done much reloading? Pete Cheers Pete, Good to know you think people who want to learn are daft. Do you get asked many questions by others less magnificent than you? Quote Link to comment Share on other sites More sharing options...
Big Al Posted July 25, 2020 Report Share Posted July 25, 2020 16 hours ago, JockStalk said: Maybe a daft question, but if I was to use a Smaller neck sizer for my fired brass Eg a .223”, so giving me 20thou smaller diameter. Would this be a bad thing? Sounds like very dangerous advice but it seems like something has been lost in translation, I cant imagine anyone seriously giving that advice, if they did then run away from them as fast as you can. Resizing a neck by 20 thou is changing a caliber entirely its not a normal reloading practise. If you resized your .243 brass down by 20 thou your bullets would no longer fit in the case. The force required to make them fit would be ridiculous and either the bullet or brass or both would most likely deform. Neck tension is the difference between the outside diameter of the neck after sizing and the outside diameter after the bullet has been seated. Normally re-loaders will aim for a neck tension value in the 1-3 thousandths of an inch range, Ive seen some powders prefer a little more but anything over 5 thou really isn't needed and standard reloading dies usually give around 2-3. Quote Link to comment Share on other sites More sharing options...
Re-Pete Posted July 25, 2020 Report Share Posted July 25, 2020 JockStalk, I'm primarily concerned that you might wind up hurting yourself or others, and if you are reloading, then sorry, but I'm surprised that you need to ask the question........... Pete Quote Link to comment Share on other sites More sharing options...
JockStalk Posted July 25, 2020 Author Report Share Posted July 25, 2020 1 hour ago, Big Al said: Sounds like very dangerous advice but it seems like something has been lost in translation, I cant imagine anyone seriously giving that advice, if they did then run away from them as fast as you can. Resizing a neck by 20 thou is changing a caliber entirely its not a normal reloading practise. If you resized your .243 brass down by 20 thou your bullets would no longer fit in the case. The force required to make them fit would be ridiculous and either the bullet or brass or both would most likely deform. Neck tension is the difference between the outside diameter of the neck after sizing and the outside diameter after the bullet has been seated. Normally re-loaders will aim for a neck tension value in the 1-3 thousandths of an inch range, Ive seen some powders prefer a little more but anything over 5 thou really isn't needed and standard reloading dies usually give around 2-3. That’s clear Al thanks for the info. I’ve been reloading for 6 years and never come across anyone using an incorrect sizing die deliberately, hence the question. No intention on my part to do this, unless several well experienced people were telling me it was some dark art of reloading I had yet to discover. Always caution first for me, but if I come across something I don’t understand I’ll ask. likely something lost in translation! Quote Link to comment Share on other sites More sharing options...
Andrew Posted July 25, 2020 Report Share Posted July 25, 2020 I don't know as it is grossly unsafe as the seated bullet then expands the neck, and a 243 has enough juice to blow the neck away from the bullet there would be the issue of starting the load development all over again and all the added steps. If you want more neck tension use the Lee Factory Crimp die. Trimming the cases to identical lengths for correct crimping will be waaaay less of a chore than what you were planning.~Andrew Quote Link to comment Share on other sites More sharing options...
Big Al Posted July 26, 2020 Report Share Posted July 26, 2020 In all honesty if anyone had sized the necks by 20 thou more than bullet diameter it wouldn't get to the point of pulling a trigger so unlikely to become a dangerous situation. After ruining a couple of cases/bullets which is what would happen when trying to seat the bullet I think common sense would prevail and the loader would stop. Quote Link to comment Share on other sites More sharing options...
Nick 53 Posted July 29, 2020 Report Share Posted July 29, 2020 All though slightly different my question to a so called reloading expert how much powder to use! The reply was fill the case up. Thankfully I declined and asked my club Diggle for assistance. Never looked back and happily produce quality reload ammunition. Thanks nick Quote Link to comment Share on other sites More sharing options...
gunner Posted July 31, 2020 Report Share Posted July 31, 2020 ^ Jees iv heard this before - fill so its overflowing then use a flat edge to wipe off the excess -lol ffs Quote Link to comment Share on other sites More sharing options...
Nick 53 Posted August 1, 2020 Report Share Posted August 1, 2020 How about a shooter using a wooden mallet to open his bolt on a 338,i asked do you resize your brass? He replied quite honestly No what's resizing. Thanks nick Quote Link to comment Share on other sites More sharing options...
KABOOM Posted August 8, 2020 Report Share Posted August 8, 2020 On 7/25/2020 at 7:38 AM, Andrew said: I don't know as it is grossly unsafe as the seated bullet then expands the neck, and a 243 has enough juice to blow the neck away from the bullet there would be the issue of starting the load development all over again and all the added steps. If you want more neck tension use the Lee Factory Crimp die. Trimming the cases to identical lengths for correct crimping will be waaaay less of a chore than what you were planning.~Andrew Im with you. I cant understand for the life of me why 020 under would be a good idea. With a 28 degree inner chamfer you might seat a projectile but the very thought of the unknown pressure rise makes me very unhappy. Quote Link to comment Share on other sites More sharing options...
Andrew Posted August 10, 2020 Report Share Posted August 10, 2020 Yeah. That's nutz.~Andy Quote Link to comment Share on other sites More sharing options...
Lukas_K Posted August 15, 2020 Report Share Posted August 15, 2020 Meh, unless you´re wildcatting to something like 22-243 it has no sense or value whatsoever. Keep in mind there is a limit to brass springback, which in turn means a limit to neck tension as we use to refer to it. This is roughly up to 3 thou on std calibers, maybe 4-5 thou on 338 and bigger. Anything more you´re just uselessly moving brass to another diameter. Conversely to that, if the brass were able to springback more, it would not be possible for reloaders to neck-up or down in general as the brass would always just spring back to what you started with. But that doesn´t happen. All that happens when you size the neck down any further is that the bullet has to act as an expander. Depending how far under diameter you go, it may not seat at all and crush the shoulder, seat crooked etc. However, if you do manage to seat it, it will not be held any firmly than with regularly sized brass. If you really need to increase the force holding the bullet in place, crimp it. Quote Link to comment Share on other sites More sharing options...
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