Berger Varmint .20 Caliber 40 Grain Varmint Flat Base Rifle Bullets 100 Bullet. At the same time they have an extremely tight tolerance which produces superior accuracy. Because of their uniform quality the Berger Bullets have enjoyed popularity with custom reloaders as well as competitive shooters. The quality of hand crafted with exacting standards in mind they have become a favorite among many. One of the .20 caliber options Berger offers their Bullets are turned on a Swiss style rifling mandrel. Both have a thin nosed jacket and an exact meplat that is pre-formed to each unique caliber and weight ratio. To ensure our customer commitment to quality these bullets are made with military spectral analysis along with patented electrochemical coating and a unique electrochemical curing process that promotes dense round-after-round expansion. Specifications for Berger Varmint .20 Caliber 40 Grain Varmint Flat Base Rifle Bullets: Manufacturer: Berger Gun Type: Rifle Bullet Type: Flat Base Hollow Point (FBHP) Hollow Point (HP) Bullet Weight: 40 grain Projectile Caliber: .20 Caliber Jacket Material: J4 Varmint Jacket Bullet Quantity: 100 Bullet Country of Origin: USA Fabric/Material: Copper Package Contents: Berger Varmint .20 Caliber 40 Grain Varmint Flat Base Reloading Rifle Bullets Berger 20304: 20 cal 40 gr BT Varmint Bullets 100 Pk