Neck Lube - Type S

[Woolsocks]

I’m using type s full-length dies with bushings. I took the expander ball out (don’t understand why you would have it?). Here’s my assumption. Is this correct?

1. Lube the outside of the case by rolling it on a pad. Try to not lube the shoulder.
2. Lightly lube the outside of the neck with your fingers, since the bushing resizes it from the outside.
3. No need to lube the inside of the neck. Just brush it out.

 

[Mauser48]

Pretty much. I use imperial wax and use my fingers to coat the case body and a bit on the neck.

 

[Bandit320]

I lube the body on the pad then dip the neck only in graphite.

 

[Woolsocks]

Is there any reason to lube the inside of the neck if you’re using a bushing to re-size? Seems like the bullet should seat fine without it.

 

[Bandit320]

Mine is, just because the neck is dipped in the graphite. But I expand with a mandrel after dizing.

 

[Rocketmandb]

Is there any reason to lube the inside of the neck if you’re using a bushing to re-size? Seems like the bullet should seat fine without it.

The bullet will seat fine, but it is not as consistent on firing. I've been doing some extensive testing around this and have found both a group size impact as well as an SD impact. The SD difference is relatively minor. In the three separate tests I've done with my 300 PRC, the lubed necks have all exhibited SDs in the 6.x fps range. The non-lubed necks have ranged from about 7 to 8.8. This was over a total of 55 shots and three separate batches for each condition - more than 100 shots total.

 

[Jscb1b]

Why don't you want sizing lube on the shoulder?

 

[Mauser48]

Why don't you want sizing lube on the shoulder?

Too much and you get dents from hydraulic pressure.

 

[spife7980]

But an adequate amount doesn’t hurt. It’s more of a wax issue. Liquid lubes are just fine on the shoulder with adequate dry time to get the liquids to evaporate.

 

[MarshallDodge]

Why don't you want sizing lube on the shoulder?

If the lube is not put on in a uniform manner, you can get dents from too much, and an inconsistent shoulder bump.