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Reloading Berger Bullets


Tightening up neck size

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Unread 02-21-2014, 08:22 AM
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Join Date: May 2011
Location: Gillette, Wy
Posts: 111
Re: Tightening up neck size

Originally Posted by Black Tail Hunter View Post
If you choose to crimp Lee makes a handy factory crimp die that isnt all that expensive and does a pretty nice job.

If you measure the neck and find you are only slightly over where you want to be you can sometimes get a little better neck tension by polishing the expander ball. Use flitz and a felt pad on a dremel and polish the hell out of it, the reduced friction when you pull the neck down over the ball after sizing will render slightly more neck tension.
I think I'd go the fl bushing route, be more precise in general There's a lot to consistent neck tension, annealing your brass is a good thing.

Polishing the expander ball may work, but if you happen to remove material from it, you could end up with some dilapidated piece of crap that will create runout you may not be able to rebound from.

Sometimes the only option is to spend money, and I'd steer clear of crimping. I've seen a crimp bring a semiauto load in, but there's a lot more constraints with a semi.

Also, I've never heard of setting a die by a line on the case neck, you want to set your die to bump your shoulder just enough to feed in the gun, regardless of any said line. Unless you're actually neck sizing only.
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Unread 02-22-2014, 07:40 PM
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Join Date: Jan 2014
Posts: 217
Re: Tightening up neck size

Ok I understand neck sizing but I've been seating the bullet as close to the lans as i can get it but have figured out that lighter grain bullets aren't as long as heavier grain bullets when loading for any one particular caliber. So if i take the time and extend the bullet as close to the rifle lans as i can get it with a lighter grain bullet and do the same thing for the same caliber gun but heavier grain bullet then for the lighter grain bullet it isn't going to be seated as deep in the neck as a heavier grain bullet because of length . So isn't a heavier grain bullet going to create more pressure build and release than a lighter grain bullet that isn't set in the neck as far because of trying to set as close to the lans as i can get it....Still trying to figure out which is more important, less bullet jump or bullet depth in the neck for a more consistent pressure build and release..hasn't the bullet got to be set deep enough to create a good consistent pressure build for a good consistent bullet release? Or is setting as close to the lans but not using the complete neck for good pressure build and release more important...Thanks

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Unread 02-23-2014, 06:17 AM
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Join Date: Jan 2012
Location: new zealand
Posts: 117
Re: Tightening up neck size

have a look at the picture in this thread. the whole website is good if you want to do more reading. but it is what I do, which is called seating for concentricity. you don't have to be close to the lands.

Determining COAL
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