Like most things in handloading … the more uniform one round is to the next, the more uniform ballistics you can expect. That is why I weight sort my bullets, and for my match grade ammo I only load bullets that have exactly the same weight (+/- 1/10 grain).
I recently weight sorted a box of Berger 7mm (.284) 180 grain Match Grade VLD Hunting bullets, and here are the results:
- Average = 179.89 grains
- Standard Deviation = 0.085 grains
- Extreme Spread = 0.4 grains
- Extreme Spread as % of total weight = 0.2% (this is amazing)
Bullet: Berger Bullets 180 gr Match Grade VLD Hunting (.284)
G7 BC: 0.337
Recommended Twist: 1:9″
Mfr Part #: 28502
Lot #: 4027 (Purchased Mar 2012)
All data was gathered using a RCBS ChargeMaster 1500 Powder Scale, which is accurate to +- 1/10 grain and was calibrated immediately prior to use.