I have encountered and sub sequentially over come these issiues and without going into associated neck tensioning issiues the use of appropriate bushings all of which have been addressed on this web post.
To that End I will offer up my thoughts.
Observations
This case where the neck and shoulder meet is obviously deformed and therefore rendered unusable !
This can be the result of over or under lubing your case, or exerting too much pressure on your press during the bullet seating operation.
My guess is that judging from your photograph in which your case shows no discoloring , normally a bluish- brown color which may extend above or below the area where the case neck and shoulder meet your cases have been annealed without reaching the correct temperature which would result in an inconsistent neck hardening during your annealing process! ( i believe that your estimation the of time in the flame as well as the flames intensity are themselves your villain's)
It would appear that your culprit is your annealing process and the time your brass cases are being annealed !
I suspect that you reevaluate your entire annealing process as your accompanying photograph indicates.
Please Read On .
Questions :
1) Are you using templiaq 700 high temperature paste?
2) Are you annealing by hand , or by using a machine?
3) Are you using brass from the same lot# , and the same manufacturer ?
Answers:
1): Templiaq 700 degree paste will tell you how much dwell time is actually needed in order to achieve and maintain proper annealing temperature. Yes it is expensive but if you are using a machine for annealing you only need to set up your dwell once. ( brass cases different sizes and calibers will need to be adjusted accordingly )
2): If you are annealing by hand you will achieve inconsistent temperatures which will result in your cases necks exhibiting signs much like your FL resized brass sample .
Tempilaq will get you a constant temperature simply by its discoloring and subsequent melting at the correct temperature.
This will require you to either brush each rifle case neck , or keep a close count on several dipped cases in order to establish a mean time while annealing.
Example lets say you have coated two cases .
Case#1 discolors at 4.5 seconds ,as counted in your head. Case#2 discolors at 5.0 seconds. A mean time would be 4.8 seconds. For your purposes 5 seconds will suffice. .If you can have someone with a stop watch time you all the better, but your results will still be the same unless you can manually set a start and stop time and even then your results are questionable.
Possible Solutions:
Please watch your flames temperature by controlling your flame to brass neck distance, as well as an even rotation of your brass shell cases and time subjected to your cases necks themselves under heat , making certain to keep the flames translucent color just beyond the tip in constant contact with your case neck at the point where the neck and shoulder angle begin.
Consistency is the key word here. and to that end Teplipaq 700 paste is a step in the right direction.
Better yet is to invest in an annealing machine if you don't own one.
If you do please make the adjustments as noted above.
OBTW I'm using the Annealeeze 2 made by Jeff Buck.
This unit will handle every thing you throw at it without any hiccups.
The price point is nice as well (check them out on U-Tube)
Please Note:
I by all means assure you that I am not trying to upset or hurt your feelings, and please accept my apology if I have !
These observations of mine were simply that just observations and were meant to offer you perhaps some measure of guidance.
Hope This Is Helpful !
