303 British neck sizing ???

Yes.

Put some candle sod around the neck and around the top of the shell as you are ajusting the die to neck sizing only. When you can see that you only are sizing the neck, you are in business :)
 
Usually I just screw the die down to touch the shell holder and then back it up one turn.

You'll be able to see the line on the case neck just above the shoulder where the neck has been sized. There may be some sizing done near the case head as well but that will be minimal.

Make sure they'll chamber in your gun after doing this if they weren't fired in your gun to start with.
 
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If you neck size and reload brass from the gun you fired, you should not have any chambering prolems. However, if you own other Lee-Enfield rifles, you have to keep the brass separate, since the chambers of Lee-Enfield vary enough, that it can be difficult to impossible to chamber neck sized brass from an another Lee-Enfield rifle.
 
snowhunter said:
If you neck size and reload brass from the gun you fired, you should not have any chambering prolems. However, if you own other Lee-Enfield rifles, you have to keep the brass separate, since the chambers of Lee-Enfield vary enough, that it can be difficult to impossible to chamber neck sized brass from an another Lee-Enfield rifle.
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Very true advice. I inherited a mound of once-fired .303 empties from my brother, and thought to myself that I'd inherited a real jackpot....

What I did discover was:
1. one can carefully attempt to chamber the unknown fired .303 casings. Don't push too hard, it might jam and spoil the fun.
2. if the casing doesn't chamber, it needs to be full-resized
3. if the onced-fired casing can be chambered in your rifle, you can neck-size and reload it, although it won't be as ballistically advantageous as one fired in your gun.
4. Use minimum powder loads when trying a new setup. Preserves the nerves!
 
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