Those of you that shoot a .40 caliber BPCR may be interested in the article I just posted titled, “.40 Caliber BPCR Accuracy – Twist Rate vs. Bullet Length vs. Velocity”. It can be accessed at the following link:
http://www.texas-mac.com/40_Caliber_BPCR_Accuracy_-_Twist_Rate_vs_Bullet_Length_vs_Velocity.html

Wayne