Thread: Grouping problem 338LM

Originally Posted by R93

Interesting. Used Moly for years and never had to do much but add more powder to achieve velocity. But use redding bushing dies without the expander to achieve a low runout so that is where I may have not noticed a requirement for more neck tention. Use HBN now and that is a bit more forgiving.

Curious... Same here, including the type of dies I own. Used moly in various cals since it first came on the scene. Never had an issue with neck tension. Now only use it in a 6.5 Ackley F Class gun and with that I run almost no neck tension and soft seat with 8thou (initial) engagement into rifling.