Edge min. Trim to length "new brass"

Horsemen

Active Member
Joined
Jan 22, 2008
Messages
35
First my method of sizing.
1 - New 300 Rum case (Remington), expand neck with a Sinclair neck expander.
2 - Run through the Redding FL S bushing die.

I start with a case "on average" with a length of 2.841. after expanding length drops to 2.827 (witch is to be expected). The shoulder stays the same through my process (A very good thing).

Now for my question: after checking 50 cases after sizing, I have cases ranging from 2.824-2.830 (Average of 2.827) . What should be the "min" trim length, to Cole out the short ones. Or should I even trim, until there fired for the first time.

Regards Mike.
 

Horsemen

Active Member
Joined
Jan 22, 2008
Messages
35
Over the week end, I did some more sizing. I played with different lubes.I found that with graphite dry lube, inside the neck, the OL improved. The last 50 cases the max OL was 2.832 and the minimum was 2.828. Big difference. And the run out went down also from .oo4 max to a .oo2 max. I'm a happier camper. But now, I would like to know, What the minimum trim length should be?????.
The first 50 had a min. of 2.824. Now that I got my sizing down, the min is 2.828. I was think of grouping them into several different groups like 2.824 and 2.828, then 2.830. Then start load development.

Thoughts, any one?????
Regards Mike.
 

Trending threads

Recent Posts

Nightforce has great tracking capabilities, they are rugged, a bunch of elevation, holds zero forever, and reticles are designed for long range shooting. So if you are looking to shoot long distances constantly, then you need a scope that can take the abuse. -- gilmillan1


Culture Of Excellence At Nightforce Optics
By Len Backus

A high level of quality both in production and in service. Read More


Nightforce is such a solid combo of reticle, available elevation, glass that is good enough to shoot at the longest range you can dial. Nightforce has bullet proof construction that can handle the incidental horse rolling or some other rodeo action. -- bigngreen


Nightforce ATACR Scope Review
By Jeff Brozovich

The new NightForce ATACR is for sure a top choice for any long range shooter. Read More


The total package. Nightforce is the best I have used as far as turret feel and solid detents. I have never had one that didn't track right on and always return to zero. Nightforce NXS is the best value for everything I need. -- Broz


Nightforce Velocity 1000 Reticle Review
By Scott Shreve

I think Nightforce knocked it outta the park with this reticle! Read More

NightForce


Top