Use the Hornady aerosol one shot. Put the cases flat on a towel with the open necks facing you.
Give the cases a passing shot including inside the neck. Wait a few minutes, roll the cases so the dry side is up. Repeat spray. Let it dry and you're ready to size/decap.

Unless you're a benchrest shooter, keep your cases trimmed, chamfer after trimming and ignore all the other BS.

I have one super accurate long range rifle, a 338 RUM that shoots sub 1" 5 shot groups at 300 yards. The only "special treatment" is weighed charges and Berger bullets. The quality of the build, the very expensive optics, the best bullets are what make it shoot the way it does.
"Bullet pull" is really a non-event when 100 gr of Retumbo lights up behind a 300 gr bullet.

Neck Lube experiment:
Rifle-7 X 41, bullet-150 grain psp Speer,Powder 31.5 gr. Ac 2200, Primer-#34, OAL= 2.565", Case- Federal .308. Lube was Bardahl., Range 50 yards.

#1 lubed neck ID. Mild, some soot., 2255 to 2378 FPS., 3ea. 3 shot groups.: .700", .500" .300"

#2 NO Lube in neck. Mild, some soot., 2279 to 2362 FPS., 3ea. 3 shot groups.: 1.000" , 1.000" 1.000" Didn't expect that.

Three shots were taken with the lubed than 3 shots were taken with the unlubed 3 times one group after the other.
Well that's about the size of it. roger

That goes along well with what Henry was talking about in the link by Rusty about How to Win . And similar to what the Redding tech was talking about too.

Interesting results. I am surprised that the lubed cases had a larger velocity spread , but then it still shot the better groups. Being the groups were being reduced by 0.200 per set of shots, maybe you should have gone one more round for a one hole group.

Thanks for doing the work and posting your results.

Thank you, Bartsche! Your results are very interesting.

Now I must wonder if my process lends to variations from loading to loading. I use lube inside and out when resizing, wipe off the outside of the case to complete case prep, then throw them into the tumbler. I always assumed that the tumbler was cleaning the inside of the necks well enough.

But now, I wonder... I will pay closer attention in the future, and may add a little neck lube to my groundhog and target loadings.

Still don't know if I want the lube in the neck for big game loads.

I do not belief lubricating before seating the bullet is good since it could cause a built-up in the barrel and thereby contribute towards barrel wear.

However, when sizing the cases lubebricating the inside of the neck is a must when you are using the expander. Especially with Redding lubricating the inside of the neck must be done properly otherwise you would experience too much resistence when pulling the expander throught the neck of the case. Other die sets like Hornady, RCBS and even Lyman is less sensitive to inside neck lubrication. Foster is the least sensitive to inside neck lubrication due to the expander ball they use.

Imperial Dry Neck Lube 1 oz Powder Imperial Dry .
This stuff works well.

quote:

Originally posted by Reloader270:
I do not belief lubricating before seating the bullet is good since it could cause a built-up in the barrel and thereby contribute towards barrel wear.

I would say that whatever small amount of lube that may be left would exit the barrel vaporized leaving no residue what so ever. Lubed bullets don't wear out barrels so why would a bit of leftover inside neck lube?

quote:

Originally posted by craigster:

quote:

Originally posted by Reloader270:
I do not belief lubricating before seating the bullet is good since it could cause a built-up in the barrel and thereby contribute towards barrel wear.

I would say that whatever small amount of lube that may be left would exit the barrel vaporized leaving no residue what so ever. Lubed bullets don't wear out barrels so why would a bit of leftover inside neck lube?

10-4 roger

I'm gonna guess that the reason lubing the inside of the neck before seating a bullet is concern that the lube could corrupt the powder charge. The bullet would tend to squeegee the lube in front of the base of the bullet. Then, considering the position of the cartridge and the temp. the oil could migrate into the powder.

Powder will stick to inside neck lube. So yes, that sticky powder goes right down on top of the main charge when the bullet is seated.

You are correct about sticky lubes. That why they are obsolete except fot major case forming job. The Hornady lube leaves nothing to contaminate the powder.

If you are really serious about shooting bug holes rather than hunting accuracy, then buy the RCBS or Redding dies floating insert neck sizing dies. No lube or expander ball is needed once you have the correct insert for the case you are using. You may also use the same die with different inserts for cartridges in the same "family". I have a 270 body that I use for 270,25-06 and 22-06. I decap only, tumble and brush out the neck every 5 reloads. No evidence it improves the grouping but they look nicer.

Insofar as lube in the case, it sounds like no one shoots cast bullets in MZs or Cartridge guns. Many cast bullets are long enough to enter the powder space below the neck. That why a filler is often used on top of the powder so that the load is compressed, hence no chance of powder contamination. In MZs, typically a cork wad serves the same purpose.

Guys that shoot BPCRs with grease groove bullets have some lube in the neck of each and every loaded cartridge.

quote:

Originally posted by SR4759:
Guys that shoot BPCRs with grease groove bullets have some lube in the neck of each and every loaded cartridge.

Yup, all my BPCR loads use greasy bullets. I really think powder contamination due to neck lube is pretty much a non issue.