Dual diameter 40-82 revisited

Discussions of powders, bullets and loading information.

Moderators: Kirk, Lucinda

Post Reply
semtav
Posts: 2867
Joined: Wed Feb 03, 2010 3:21 pm
Location: Montana

Dual diameter 40-82 revisited

Post by semtav »

Finally got my ducks in a row so I can test some loads with the JIM403415E
My first try on a shot up gong a month or so ago showed real promise.
So I finally got to put it on "paper"

I switched to heavier paper cause I didn't like the bullet loose in the case like it was with 8 lb paper.


5 shots were just barely over 1 moa at 300 yds.
last shot was with the 8 lb paper and it shot an inch low.



40-82 test 1.jpg
You do not have the required permissions to view the files attached to this post.
kwilliams
Posts: 282
Joined: Tue Oct 08, 2019 8:42 am
Location: Wyoming

Re: Dual diameter 40-82 revisited

Post by kwilliams »

Brian, that is a darn good group. Is that the refrigerator door "gong". My best group so far in my .40-82 was with the DD bullets you gave me to try. So that's the next mold to acquire.
Kenny Wasserburger
Posts: 4727
Joined: Tue Sep 24, 2002 3:53 pm
Location: Gillette, Wyoming

Re: Dual diameter 40-82 revisited

Post by Kenny Wasserburger »

Very nice,

It’s definitely working.

Kenny
We'll raise up our Glasses against Evil Forces, Singing, Whiskey for my men, Beer for my horses.

Wyoming Territory Sharps Shooter
semtav
Posts: 2867
Joined: Wed Feb 03, 2010 3:21 pm
Location: Montana

Re: Dual diameter 40-82 revisited

Post by semtav »

kwilliams wrote: Fri May 14, 2021 6:56 am Is that the refrigerator door "gong".
Yea. Still waiting on my gong hanger to be built and the neighbor to move his cows so I can shoot further , so I'm availing myself to the unlimited supply of doors from the dump next door.

this bullet doesn't quite fit the Crossno chamber in this Browning. Its either .001 undersized in the major diameter for the 8 lb paper or .001 oversized in the minor dia for the 9 paper. I'm having to cam the shell in because the bore section is tight, but sure seems to work.
beltfed
Posts: 1962
Joined: Sun Jun 03, 2007 10:07 am
Location: Central Wi

Re: Dual diameter 40-82 revisited

Post by beltfed »

semtav,
YOU could use a NOE Nose Sizer to fix that problem with
the 9#paper being tight on the bore ride minor diameter.
beltfed/arnie
semtav
Posts: 2867
Joined: Wed Feb 03, 2010 3:21 pm
Location: Montana

Re: Dual diameter 40-82 revisited

Post by semtav »

Thanks I'll have to give that a try sometime and see what it does
semtav
Posts: 2867
Joined: Wed Feb 03, 2010 3:21 pm
Location: Montana

Re: Dual diameter 40-82 revisited

Post by semtav »

I didnt pick this bullet because i have freebore or want to cut down on powder, i picked it to prevent the dreaded Desert Deuce Syndrome.
bruce m
Posts: 3350
Joined: Tue Aug 04, 2009 5:25 am
Location: australia

Re: Dual diameter 40-82 revisited

Post by bruce m »

brian,
with a bullet so tight in the rifling that you have to cam the round into the chamber you run a risk.
this is that the bullet can be forced back onto the powder enough to alter powder compression.
this in itself might not matter if it is consistent for every shot, but it might vary.
not only might compression vary, but so also would cartridge o.a.l.
bullets so sized are excellent for breech seating bullets prior to chambering a charged case.
a thing that might help them to slide in is to lubricate the patch.
while this can in some instances enhance accuracy, in others it might do the opposite.
i patched some bullets and applied different lube, and left them on the bench for a long time.
the lube which affected the patch the least was tallow.
this was made by rendering the fat from around a sheep's kidneys, called suet.
it keeps for years unrefrigerated.
ideally, for fixed ammo, it is better to get a bullet mould of correct major and minor diameters with whatever paper you use.
some have found that 8 lb paper shoots better than 9 lb, but others use 9 lb very successfully.
my own thoughts on your bullet situation are that a nice fit in the bore and 0.001" small in the case has a lot to offer if the ammunition can function well, as in the bullet staying in the case while loading the gun.
reason being that the bullet will align well in the bore, and any looseness in the case will allow this alignment to continue right to the base.
bruce.
ventum est amicus meus
semtav
Posts: 2867
Joined: Wed Feb 03, 2010 3:21 pm
Location: Montana

Re: Dual diameter 40-82 revisited

Post by semtav »

Thanks Bruce
I'll keep that in mind. I'm sure you're right about the paper plus I like working with 8 lb way better than 9 lb.

My test on the gong at 800 yards was with 8 lb and it showed almost no vertical from what I thought I could see.

The local slaughterhouse used to save Tallow for me back when I played with that Greasy stuff. I'm sure I've still got some up here somewhere.
bruce m
Posts: 3350
Joined: Tue Aug 04, 2009 5:25 am
Location: australia

Re: Dual diameter 40-82 revisited

Post by bruce m »

minimal vertical at 800 sounds really good.
bruce.
ventum est amicus meus
Kurt
Posts: 8428
Joined: Wed Oct 12, 2005 10:28 pm
Location: Not Far enough NW in Illinois

Re: Dual diameter 40-82 revisited

Post by Kurt »

Bryan,
Your making this very tempting changing my Browning .40-65. I have a reamer that would match that chamber.
The reason a dog has so many friends is because he wags his tail instead of his tongue.

"Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery"Winston Churchill
semtav
Posts: 2867
Joined: Wed Feb 03, 2010 3:21 pm
Location: Montana

Re: Dual diameter 40-82 revisited

Post by semtav »

Life would be so much simpler if we were just one gun shooters.
But not near as much fun!!
Michael Johnson

Re: Dual diameter 40-82 revisited

Post by Michael Johnson »

Brian, I am just getting ready to load this same bullet in a 1/14 twist 40/90BN. Interesting reading your initial tests. I too have the same 8# paper, this for a Shiloh chamber. Planning on a full load of 1Fg Swiss.
semtav
Posts: 2867
Joined: Wed Feb 03, 2010 3:21 pm
Location: Montana

Re: Dual diameter 40-82 revisited

Post by semtav »

It'll be interesting to see your results!!
Kurt
Posts: 8428
Joined: Wed Oct 12, 2005 10:28 pm
Location: Not Far enough NW in Illinois

Re: Dual diameter 40-82 revisited

Post by Kurt »

semtav wrote: Fri May 14, 2021 8:23 pm Life would be so much simpler if we were just one gun shooters.
But not near as much fun!!
I have a friend that keeps telling me, "beware of the man with just one gun" when I show up with a different rifle and load going into a match :D

But it would make life easier.......I think....
The reason a dog has so many friends is because he wags his tail instead of his tongue.

"Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery"Winston Churchill
Post Reply