404 Jeffery Reloading

[Scrumbag]

Hello folks,

Hope this finds everybody well.

I just got my 404 Jeff back from the smiths with some sympathetic improvements.

Now I have also got some reloading dies!

I have

Seating Die
Resizing Die
Expanding Die

Made by a company called North Devon Firearm Services.

What I don't have is a crimp die which I think might be worth it for what is quite a light weight 404J.

Anyone got any ideas?

Anyone think it would be a terrible idea to try using a 44 mag crimping die? (6 thou of an inch in 423 vs 429 for bore size and maybe even less difference due to brass thickness?)

KR,

Scrummy

 

[375 Ruger Fan]

Lee will make a 404 Jeff crimp die on a custom basis. You have to send them a dummy round and it takes a month or two.

Factory Crimp Die - Lee Precision

Crimps the bullet in place more firmly than any other toolIt is impossible to buckle the case as with regular roll crimp dies. Trim length is not critical. Tests demonstrate that even bullets which have no cannelure will shoot more accurately if crimped in place with the Lee Factory Crimp Die.

leeprecision.com

 

[Scrumbag]

The problem is I’m in the uk so sending a dummy round not so easy

 

[Ray B]

The problem with using a .44 Mag crimp die is that the shoulder of the 404 brass prevents the case from getting to the crimp ring. One that has the crimper close to the entrance may work. But I don't know if the slightly larger diameter would provide enough crimp to make it workable.

 

[wswolf]

My .416 has a much shorter neck than the 404 and I have never seen a bullet set back despite leaving a cartridge in the magazine while firing 10 rounds. The rifle weighs a bit over nine pounds. If your expander ball is .001" to .002" smaller than bullet diameter I predict you will have no trouble.

Cheers,
Walt

 

[C.W. Richter]

Yes, if i interpret correctly, both my .458 and .416 aren't set up to be crimped...the neck sizing is tight and that's a lot of bullet surface area contacting the inside of the neck (not to mention full, compressed powder charge,) so never any issue without crimping. Where that might pay off is if submerged in water, although the aforementioned may do the trick! You could get a different size collet (for your existing full or neck sizer die) and neck size a bit tighter, if necessary, in lieu of the crimp...Also less of an issue in a double-gun, but i'm assuming you're using a bolt with a magazine.

 

[Proneshooter]

Hornaday seating die will do a crimp if adjusted properly, not sure how available they might be in the UK.

 

[bones]

Agree with above.
I load a bullet with cantilever grooves. If you get your Brass to end in one of the grooves a normal die works even better as 'crimping' tool, if set up correctly.