Quick Answer
To achieve accurate .35 Whelen rounds, prioritize precise headspace control, consistent powder charge, and optimal bullet seating depth. A well-maintained rifle and consistent reloading process are also essential. Use a scale that measures to 0.1 grains for powder charge accuracy.
Optimal Powder Charge and Bullet Seating Depth
The .35 Whelen’s optimal operating pressure is between 45,000 and 50,000 psi. To achieve this, use a powder charge of 63-68 grains of IMR 4831 or H4831. When seating the bullet, aim for .015 inches from the lands to ensure consistent expansion and accuracy. A .35 Whelen bullet is typically 250 grains, so seating depth should not exceed .020 inches.
Precision Headspacing and Rifle Maintenance
Proper headspace control ensures that the cartridge is seated correctly within the chamber. Use a headspace gauge to measure the freebore distance between the cartridge case head and the bolt face. A well-maintained rifle is also crucial for accuracy. Regularly clean the rifle, and inspect it for wear on the bolt and chamber. Use a .010-inch feeler gauge to check the chamber’s freebore distance.
Bullet Selection and Reloading Consistency
Choose a bullet with a suitable ballistic coefficient for elk hunting, such as the 250-grain Remington Core-Lokt or the 250-grain Hornady InterLock. Use a consistent reloading process, including weighing powder charges to 0.1 grains, to ensure accuracy. A well-organized reloading bench and a good quality scale can make a significant difference in achieving accurate .35 Whelen rounds.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.