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Difference in Dies?????
tacomasr5
Member Posts: 51 ✭✭
Can someone tell me the difference in a small base die and a full length die??
I would like to get involved in re-loading .243 Win, and I am trying to learn as much as possible before I start.
Thanks, and please excuse my ignorance on the subject, but I figure better safe than sorry.
I would like to get involved in re-loading .243 Win, and I am trying to learn as much as possible before I start.
Thanks, and please excuse my ignorance on the subject, but I figure better safe than sorry.
Comments
A. The Small Base Die set is intended for use for ammunition to be used in auto, semi-auto, and lever action rifles so that the loaded round chambers and extracts easily. The Small Base Sizer Die sizes the case from the shoulder to the head of the case a couple of thousandths smaller than a Full Length Sizer Die. In certain calibers it also sets the shoulder of the case back a thousandth or two more than the Full Length Sizer Die. The Full Length Die Set or Neck Die Set is not normally recommended for ammo to be used in auto, semi-auto, or lever action rifles. The Full Length Die set is recommended for ammunition used in bolt action rifles, particularly for ammunition to be used for hunting. The Neck Die Set can also be used to produce ammunition for use in bolt action rifles. The Neck Sizer Die sizes only the neck of the case so it will hold the bullet firmly. It does not size the body of the case nor does it set the shoulder back. Neck sized cases will usually chamber for three or more firings, depending on the powder charge and chamber dimensions. However, over a period of time, a slight drag will be noticed when the bolt is locked. At this point, cases will need to be full length sized and the shoulder set back so they will chamber and extract easily.
http://www.rcbs.com/guide/#faq
"For a .243 I'd imagine neither would apply"..........unless you are loading for a auto or pump rifle, or have brass fired in one
I reload a lot for semi autos and have never needed a small base die unless the brass originally came from a machine gun. It would have to be a pretty sloppy chamber for this to apply. JMHO.
As most of the posters noted above you won't need a small base die unless your standard full length die isn't sizing down the base enough to get your brass to fit your rifle. Thus the 'small base' title it's given.
Small base dies are full length dies.
This is opposed to neck sizing dies which don't touch the body of the case, but do size down just the neck. Of these there are generally two types, standard and bushing. A standard die is one size and that's it. A bushing die can have the bushing changed to control the size of the neck.
The benefit of these is the case body remains the size of your chamber through a number of firings. About every 4-5 firings in a regular chamber you will have to full length the cases.
-hope that helps
tacomasr5,
As most of the posters noted above you won't need a small base die unless your standard full length die is sizing down the base enough to get your brass to fit your rifle. Thus the 'small base' title it's given.
Small base dies are full length dies.
This is opposed to neck sizing dies which don't touch the body of the case, but do size down just the neck. Of these there are generally two types, standard and bushing. A standard die is one size and that's it. A bushing die can have the bushing changed to control the size of the neck.
The benefit of these is the case body remains the size of your chamber through a number of firings. About every 4-5 firings in a regular chamber you will have to full length the cases.
-hope that helps
Sand--i have read and reread your post and must ask did you mean to use the word "isn't" between "standard full length die---is---sizing down the base enough" or is there something I'm missing.
quote:Originally posted by sandwarrior
tacomasr5,
As most of the posters noted above you won't need a small base die unless your standard full length die is sizing down the base enough to get your brass to fit your rifle. Thus the 'small base' title it's given.
Small base dies are full length dies.
This is opposed to neck sizing dies which don't touch the body of the case, but do size down just the neck. Of these there are generally two types, standard and bushing. A standard die is one size and that's it. A bushing die can have the bushing changed to control the size of the neck.
The benefit of these is the case body remains the size of your chamber through a number of firings. About every 4-5 firings in a regular chamber you will have to full length the cases.
-hope that helps
Sand--i have read and reread your post and must ask did you mean to use the word "isn't" between "standard full length die---is---sizing down the base enough" or is there something I'm missing.
You are correct sir! I just now saw that myself this fine, fine sunny Tuesday afternoon. It is now corrected.
If you work at TACOM please email me. It's where I work.
Jim