Lapua 6 x 47

 

Neck Diameter

Bullet neck thickness with new Lapua Brass : .243 + 14.5thou + 14.5thou = .272 / 273 diam approx

 

Powders

39.5 to 41 g usual (can go to 42.5) - N560 popular,  H4350 and the new  RL17 appear to give higher fps.

All loads should provided 3000fps+ with the 105 to 108g bullets (nearer 3100fps with H4350 and RL17)

 

Seating

Seating into land approx 10thou appears popular 

 

Using 268 Neck Reamer

 6 x 47 Lapua Rifle having 268 neck so loaded round of approx 266thou. Use 264 / 263 / 262thou neck bushing

 

MOA

Approx 28MOA of adjustment required for 1000yds

 

Barrel Twist

1 in 8 most popular for the 105 to 108g bullets.

1 in 7.5 for the 115 DTAC bullets (Harder to tune).

 

Barrel Length

28 to 30 inches

 

Bullets

 

105 BT Berger 0.527BC 9 Twist

105 VLD Berger 0.556BC 8 Twist

108 Match Berger 0.546 8 Twist

115 VLD Berger 0.595BC 7 Twist

 

107g Sierra Match King HPBT 0.527BC

 

MOA

12MOA adjust at 600yds

26/27MOA adjust at 1000yds