450Bushmaster.net

I was sighting in my Bushmaster pistol this past weekend and on 3 or 4 occasions there would be a second delay before the round would go off. Rounds were loaded using WSR primers, thoughts on moving up to CCI 450 primers?

Welcome Aboard!

I've seen more hangfires in this caliber that were attributable to insufficient neck tension, than primer choice. The strength of the primer detonation blows the bullet and the charge column out of the case and its not until the bullet jams up against the throat and stops it's forward travel that the charge column finally cooks off. There are however, exceptions to every rule. Just my observations. The real problem is when the powder column still doesn't ignite and you have an awful mess to clean out of your action and trigger groups, usually on the firing line, where its least convenient. Seen that too.

Its one of the reasons we don't recommend plated jackets like Berry's and Rainier bullets. The neck tension relies upon the bullet resisting being squeezed down, to develop tension. In the case of the paper thin plated copper jacket, it just crushes back into the soft lead center and doesn't spring back, yielding insufficient next tension. By insufficient, I mean for the burn speed of the powders that we use for conventional cup and core jacketed bullets in this caliber.

WSR primers are definitely up for the task. I rate them second only to the Rem 7 1/2 in this caliber and would never think twice about using them.

Hoot

what powder and bullet were you using?

39G H110 and 240G XTP, this thing has give me fits every since I I started loading for it. Neck tension has been an issue or should I say bullet jump, especially with 4227 and while using 230gfmj. I worry about crimping to much more and having headspace issues.

Try skipping the expanding die, see if that gives you more neck tension.