Tell me about inline seater dies - do they really produce less runout?

[bozo699]

Wayne, if you can write an article about your bullet sorting process with some good digital pictures of the setup, I'd love to put it on the site; it sounds like a well thought out approach but without some visuals I'm not following it entirely. I think it would make a great article.

I agree with your three or four part list and the order of importance - how we get there can vary a bit, but we're going down the same path.

Thanks to all for getting a good dialogue going on this topic, very interesting stuff.

German,
I am no Journalist like you or my friend Boyd Allen but I will see what I can come up with, I am going to be working cattle for the next few days but maybe I can email you or something for some guidance in getting started of on the right foot, and thank you for you consideration.
Wayne.

 

[dtucker]

They work perfect, try one ;D

Hey, those are my favorite paint can openers! Now I see they work on stuck rounds too!

 

[dtucker]

I am just curious if the base to ogive is off 2 or 3 thousands how this effects case volume? I can see if you were talking about distance to lands but not understanding the case volume thing here.

 

[jlow]

The bullet is seated by pushing on its ogive and a longer base to ogive length will result in a bullet that is seated deeper into the case which in turn reduced case volume. Changing the internal volume of the case will affect the pressure produced by the combustion of the powder which in turn will affect MV.

 

[BoydAllen]

I think that it should be pointed out that in many cases we are working from assumptions that have not been specifically proven by testing. I am not picking on anyone on this. I do it myself. Thinking that I "know how things work" I say to myself, when I do this, this must be the result, and then later, I may get better information that changes that assumption. IMO, bottom line, we all do a certain amount of guessing. More recently, I have come to realize that in some cases, all we are equipped to do is to say when I did this, it seemed to work better. One of these days, it might be interesting to put a strain gauge on one or more of my barrels.

 

[jlow]

Yes indeed, completely theoratical until actually proven! Mostly vodoo at this point!

 

[chino1969]

Being an accuracy addict, I use only Wilson seaters for my match grade properly chambered barrels. I have Redding competition seaters as well as Forster competition seaters sitting unused. Using a bullet runout indicator I was never able to get a consistent <.002 t.i.r. on my loaded rounds using the threaded seating dies. With the Wilson in line seater, most of the rounds are <.001 and sometimes the indicator needle just indicates <.0005.

 

[bozo699]

Being an accuracy addict, I use only Wilson seaters for my match grade properly chambered barrels. I have Redding competition seaters as well as Forster competition seaters sitting unused. Using a bullet runout indicator I was never able to get a consistent <.002 t.i.r. on my loaded rounds using the threaded seating dies. With the Wilson in line seater, most of the rounds are <.001 and sometimes the indicator needle just indicates <.0005.

Are these factory Wilson dies or did you have them made with your ream? I have not noticed factory Wilsons to give any better if as good as a Forster comp seater, I do prefer them though but I have to modify them to get precision results.
Wayne.

 

[jlow]

I agree with Wayne. Just loaded up a number of rounds today with my Forster competition seater and most rounds were zero or one thousands in terms of runout.

 

[Killshot]

Wayne, Boyd, et al; I found the seating stems in the Redding Comp seater had such severe angles at the contact point it was leaving a ring on the brass were it made contact, even with very little neck tension.

What I did was to use a Dremel tip that was as close to the ogive shape as the 6mm Bergers and very gently chamfered that sharp contact edge away. The pressure is now spread over a larger area. It hits a little lower on the bullet, closer to the land contact-point.

Forgive my crude illustrations but you get the idea.

I think that boring out a solid stem, say a little bigger than what Whidden uses for his Pointing Die, to the exact profile of the Hybrid or VLD would be the best solution for the sliding sleeve Redding Comp Seater.

This still doesn't address the issue of our measuring at points which aren't the "real" contact-points; Stem/Comparator contact point vs Barrel Lands contact point. Don't know what, if anything, we're giving away in that respect.