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Reloading Berger Bullets


Need some advice

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Unread 02-18-2009, 10:27 AM
Silver Member
Join Date: Dec 2008
Posts: 166
Re: Need some advice

Is leaving KROIL in your barrel harmful? I have had it in my barrel for about 2 weks now, waiting for all my new toys to come in and get set up.
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Unread 02-18-2009, 11:03 AM
Platinum Member
Join Date: Jun 2007
Location: Wilmington NC
Posts: 4,690
Re: Need some advice

Buy a Darrell Holland Case neck mike, sponsor here. One of the best at very reasonable prices. Measure your brass before you go to turning though. You might find that you do not need to do that.

What is the diameter after firing?

How much are your dies squeezing the neck down? if over .04/5 or so on a loaded round, that is pretty tight and too much neck tension will open groups up. Most guys are shooting for around .02-.03 on a magazine gun and .015 -.02 on a single shot.

James Carstenson at JLC precision will convert any die to neck bushings for around $45 and two week turn around. He is listed under the tools section at

What is the loaded round diameter?

How much variance are you getting around the necks and from case to case.

Unless there is a .002 or more variance in brass neck dimension, might not want to waste the time. Shoot some groups with mixed dimension brass and see how it shoots.

IMO neck turning cases for a real "factory" chamber to set in a way oversize neck (factory) is more often a "feel good" issue that has no real positive results. Neck turning is to center the round in the neck and give consistent neck tension, if the factory chamber is .008 over the loaded round, it just sets on the bottom and is not centered, so it might make the situation worse depending how much is taken off.

Cases work harden (not at the same either) after 3-4 firings so there goes your neck tension unless you anneal. Only real option after that is to use machinest pin guages and sort cases by inside neck diameter to insure uniform tension. Been there and done that, and it is a pain in the butt but highly effective. I just anneal now.

You say you have a "match" chamber, is that min SAAMI or even tight neck? You need to know. Most of the time that means min SAAMI and no neck turn.

I prefer the K&M neck turner as it is the only one with the donut cutter carbide mandrel. Joel Pendegraf on BR central sells the neatest holder ($40) for it and that helps cuts down heat which is the enemy of neck turning and make it much easier to hold.

$25 B&D cordless screwdriver is the best tool to hold and turn the cases. No more than 180 RPM. Sinclair sells the adapters to fit.

Buy the Hornady comparators and learn to use them to measure seating depths and how to touch the lands. Seating depth has more to do with accuracy than a lot of the other things discussed. This should be the next step after determining the powder charge. if a mag gun, I start my load development at max COAL for the mag, and work back in .005 increments after I find the powder charge. That way, you only have one way to go. You may or may not be anywhere near the lands on a mag gun.

Go with Forester/Redding dies if possible.

Weighing brass- I have gone full circle. I have done it weighing to the .01 grain and now just look for the "anomoly"cases and use a 1 grain variance factor. Tell me, what variance are you weighing anyway? Is it in the neck, case head, sides or where? No one can tell. Now the purests sort cases by H2O volume which is a whole nuther issue.

Best advice is to go slow and be sure. Sinclair sells a precision reloading video, buy it and watch it along with reading the Zydeker book before you go buying a lot of stuff and doing things that might not work.

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Unread 02-18-2009, 05:25 PM
Junior Member
Join Date: Jan 2009
Location: Minnesota
Posts: 29
Re: Need some advice

Make no mistake I know nothing on this subject. Like you I am new to this. I also read alot and have never reloaded my self. But what most of the senior members tell me, and other newbie is buy your dies from Hornday unless you are using competition dies.
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Unread 03-23-2009, 12:04 AM
Bronze Member
Join Date: Mar 2009
Posts: 98
Re: Need some advice

Here your go:

1- Trim cases to uniform length
2- Neck turn case necks to ONLY remove the high spots. In a non tight
neck chamber cutting the necks more is a waist of time.
3- Weigh cases & sort
4- Weigh bullets & sort
5- Full length size (if new brass)
6- Uniform primer pockets
7- Champher case mouths (don't use a VLD cutter unless your using VLD bullets as the angle of VLDs is not the same as standard bullets)
8 - Prime cases
9- Charge cases (to within 1/10 grain each)
10- Seat bullets
11- Check bullet runout with concentricity gauge.

You can buy a concentricity gauge and dial indicator from either Sinclair or Redding.

RCBS just re-tooled their factory and their tolerances are very good. Your dies will be date stamped. If they are 9/08 or later you're good.

Invest in an Redding micrometer seating die & a bushing neck die. They can fill you in on the details.

You don't need a "chamber gauge" it won't tell you any thing other that that the chamber was cut to within SAMI specs. You do need a COAL gauge to determine the overall cartridge length from the case base to the contact point of the bullet ogive and the barrel lands. You will have to experiment with seating depths in .005 plus and minus (bullet ogive to land contact) to determined what works best as far as accuracy for your gun. Nuf sed
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Unread 03-23-2009, 12:11 AM
Bronze Member
Join Date: Mar 2009
Posts: 98
Re: Need some advice

Why would you leave KROIL in your barrel? It is normally only used to remove residual fouling from molybendum disulfied coated bullets. It is strong and could possibly etch the barrel leading to future copper fouling if the barrel is chrome moly. If it is stainless you may be safe but I would not leave it in.
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Unread 03-23-2009, 07:30 AM
Platinum Member
Join Date: Feb 2008
Location: IOWA
Posts: 1,995
Re: Need some advice

Ackley Man,
I would full length resize before you trim to length, as the length will change during the resizing.
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Unread 03-23-2009, 09:43 AM
Bronze Member
Join Date: Mar 2009
Posts: 98
Re: Need some advice


You are right. If his brass is new he should FL size before he trims.
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