Bullet jump on 5.56x45 when slammed into battery
- By Doom
- Reloading Depot
- 16 Replies
As far as as the LCD the issue is springback. it occurs in the direction the metal was bent/shaped from. So the
case neck sized with the LCD tend to open in diameter with both short and long term setback. With a regular FLS or bushing die the case neck is made smaller than the mandrel or expander so that the neck tends to reduce in diameter due to springbuck. The degree to which all this occurs depends on both time and case neck hardness. Does it matter to performance? I don't know but I want more than 2 or 3 thousandths for my semi-autos.
case neck sized with the LCD tend to open in diameter with both short and long term setback. With a regular FLS or bushing die the case neck is made smaller than the mandrel or expander so that the neck tends to reduce in diameter due to springbuck. The degree to which all this occurs depends on both time and case neck hardness. Does it matter to performance? I don't know but I want more than 2 or 3 thousandths for my semi-autos.