What are you currently reloading?

[grizzly63]

300 WM 225 Eldm Magpro 3.700 coal 2889fps so far.

 

[millerkiller77]

300 WM 225 Eldm Magpro 3.700 coal 2889fps so far.

that's pretty spicy! What rifle do you have that accepts 3.7"? I load 215 Bergers to 3.6" and they barely fit in a 700.

 

[grizzly63]

A late edition end of the line Rem sendero. Tried to get it fixed twice. Third time they gave me a different end of the line rifle. It has this much freebore. I installed a Wyatts long box with the use of a Dremel. Not anything like P. Ham does but it works. I pushed them faster tonight as I'm just on the edge of pressure. Probably in the 2930-50 range. Didn't bring the chrono along tonight. Shooting some larger groups to prove or disprove what I'm getting. Not the 30 shot groups others suggest, just enough to make believe what I am getting is consistent. It currently is about hunting temps now. I am not jamming the lands.

 

[millerkiller77]

A late edition end of the line Rem sendero. Tried to get it fixed twice. Third time they gave me a different end of the line rifle. It has this much freebore. I installed a Wyatts long box with the use of a Dremel. Not anything like P. Ham does but it works. I pushed them faster tonight as I'm just on the edge of pressure. Probably in the 2930-50 range. Didn't bring the chrono along tonight. Shooting some larger groups to prove or disprove what I'm getting. Not the 30 shot groups others suggest, just enough to make believe what I am getting is consistent. It currently is about hunting temps now. I am not jamming the lands.

Mine is a SFii, fantastic rifle.

 

[grizzly63]

Mine is a SFii, fantastic rifle.

some people are luckier than others

 

[millerkiller77]

Working on a batch of 300wsm Norma brass. 3rd firing and most of them have the dreaded donut, no harm in uniforming the necks at the same time the donut is being removed.

 

[grizzly63]

OK, whats the dreaded donut? Is that the point where the brass is stretching and closer to the end of serviceable life ?

 

[millerkiller77]

OK, whats the dreaded donut? Is that the point where the brass is stretching and closer to the end of serviceable life ?

Where the inside neck meets the shoulder junction. Brass eventually flows from the shoulder to the inside of the neck creating a ring or "donut" at the junction. If you've ever seated bullets and felt more resistance or friction about halfway through the stroke, it's most likely a donut. The end cutter is caliber specific and only removes the donut, without cutting the inside of the neck. Maybe someone else can come along and give a little bit better description.

 

[grizzly63]

That makes sense. If you full size, does it prevent this? I was thinking more along the lines of a case separation that shows up first as I shiny ring slight above a belted magnum belt.

 

[millerkiller77]

That makes sense. If you full size, does it prevent this? I was thinking more along the lines of a case separation that shows up first as I shiny ring slight above a belted magnum belt.

Have you ever personally experienced case head separation, Or suspected incipient separation?
You'd have to be bumping the shoulders really far with a FL die to see separation after one or two reloads