Quick Answer
Using a suppressor generally does not change the bullet trajectory significantly, but it can affect the point of impact by introducing additional wind deflection and ballistic drift, mainly due to the increased muzzle gas velocity and temperature changes.
Understanding Suppressor Impact
When firing a flat-shooting varmint cartridge from .223 to .308, the addition of a suppressor will increase the overall length of the barrel and affect the barrel’s temperature. This temperature change can cause the barrel to expand, which in turn can alter the point of impact. However, this effect is typically minimal, around 1-2 MOA (minutes of angle) at most, depending on the cartridge and suppressor design.
Measuring Suppressor Impact
To accurately determine the suppressor’s effect on the point of impact, it’s essential to conduct a series of precise shots with and without the suppressor. Using a chronograph to measure the cartridge’s velocity with and without the suppressor can provide valuable insights into the impact of the suppressor on the cartridge. A typical suppressor can increase muzzle velocity by 20-50 FPS (feet per second), depending on the cartridge and suppressor design.
Compensating for Suppressor Impact
To compensate for the suppressor’s effect on the point of impact, hunters and shooters can use a combination of techniques. These include adjusting the rifle’s scope to account for the increased wind deflection and ballistic drift, using a more precise ballistic calculator, and consulting with experienced shooters who have used the same suppressor and cartridge combination. By taking these steps, shooters can minimize the impact of the suppressor on the point of impact and achieve more accurate shots.
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