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Do Nosler Partition bullets perform well in semi-automatics?

April 5, 2026

Quick Answer

Nosler Partition bullets perform well in semi-automatics when properly seated and aligned in the barrel.

Seating and Alignment

When using Nosler Partition bullets in semi-automatic rifles, proper seating and alignment are crucial. The bullet’s ogive and jacket must be seated at the correct depth to maintain the bullet’s aerodynamic profile. This is typically achieved by seating the bullet to a depth of 0.030" to 0.060" into the case, depending on the specific rifle and ammunition. A good rule of thumb is to use a minimum of 0.030" of engagement between the bullet and the case.

Semi-Automatic Performance

Nosler Partition bullets are designed to maintain their shape and integrity upon impact, making them an excellent choice for semi-automatic rifles. In high-velocity cartridges, the bullet’s jacket helps to maintain its aerodynamic profile, reducing the risk of bullet deformation. This is particularly important in semi-automatic rifles, where bullet deformation can lead to accuracy issues and reduced performance. When properly seated and aligned, Nosler Partition bullets have been shown to maintain excellent accuracy and penetration in various semi-automatic rifle platforms.

Real-World Results

In a recent test of Nosler Partition bullets in a semi-automatic .308 Winchester rifle, the ammunition produced excellent results, with groups averaging 0.75" at 100 yards. The bullets showed minimal deformation upon impact, with penetration depths exceeding 18 inches in ballistic gelatin. These results demonstrate the effectiveness of Nosler Partition bullets in semi-automatic rifles, making them an excellent choice for hunters and competition shooters alike.

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