Quick Answer
Common mistakes to avoid when using .450 Bushmaster include overloading the cartridge, which can lead to excessive pressure and potentially damage the rifle or harm the shooter, and not following proper reloading procedures to ensure consistent and accurate ammunition.
Overloading the Cartridge
The .450 Bushmaster is a powerful cartridge, but it is still susceptible to overloading. To avoid this, it is essential to stick to the recommended maximum load of 100 grains of powder, such as H414 or H1000. Exceeding this load can increase the pressure to levels that are not safe for the rifle or the shooter. In fact, the SAAMI maximum pressure for the .450 Bushmaster is 53,000 psi, and exceeding this can lead to catastrophic failure of the rifle.
Insufficient Chamber Throat Clearance
The .450 Bushmaster has a relatively large case diameter, which can lead to issues with chamber throat clearance. To ensure safe and reliable operation, it is essential to maintain a minimum of 0.030" of chamber throat clearance. This can be achieved through proper chamber reaming or by using a barrel with a longer throat. Failure to maintain sufficient clearance can lead to excessive pressure and potentially damage the rifle.
Proper Reloading Techniques
When reloading the .450 Bushmaster, it is essential to follow proper techniques to ensure consistent and accurate ammunition. This includes using a consistent powder charge, seating the bullet to the correct depth, and ensuring proper case neck tension. It is also essential to use a good quality die set and to follow the manufacturer’s instructions for reloading the cartridge. By following these techniques, the shooter can ensure that their ammunition is safe, reliable, and accurate.
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