Avatar
Search
Forum Scope




Match



Forum Options



Minimum search word length is 3 characters - maximum search word length is 84 characters
Lost password?
sp_Feed sp_PrintTopic sp_TopicIcon
40 Ex
Avatar
Chuck
Member
WACA Member
Forum Posts: 6334
Member Since:
March 31, 2009
sp_UserOfflineSmall Offline
1
January 29, 2026 - 12:43 am
sp_Permalink sp_Print sp_EditHistory

Some of you know I recently bought an 1885 Highwall in 40-110 EX 260.  Well between the other 4 rifles I am working on I started messing with this one.

Last night I went through the brass I have and was a little let down that this one has to be squeezed just to get it into the chamber too.  I can use the same brass I used for the 45 EX.  I have around 30 empty 450 Nitro Express thick rim cases.  I will use what I need for the 45 EX and the others for this project.

So without much thought I went out and started to squeeze one.  Already had the hole drilled from the last project.  It didn’t take long at all to get it to fit into the chamber.  But I split the neck.  I had forgotten the first step requires something from over squeezing and and in my case splitting the neck.  The split is about an 8th of an inch but it will continue to split, so it is trash.  I will cut off about a quarter inch of the case and keep the good part.  My second attempt worked OK because I used something from letting it cave in and split.

I am not sure if I talked about the fix when doing the 38 EX?  The first stage of squeezing I sat a bullet on the arbor press so when the case was being squeezed it was also over the bullet.  For the 40 EX case I used a 30 cal to 40 cal sizer.  I have too much else to get done but I will shoot the one case I have done on Tuesday.

After a lot of digging I found my bullets that I use for the 40-65 I shoot.  They are the exact weight I need but the manuals says I need a .403″ bullet.  These are .408″.  Then I remembered that the 40 cals, like my 86, actually shoot the larger diameter.  I slugged the barrel twice and found the .408″ bullets are what I need.  The barrel slugged the firs time at .401″ and .407″ and the second time at .400″ and .407″.   All the forming will be done with a 75% load of black powder.  The Barnes manual says to use 32 grs. of 4198.  I will start lower this time and work up. 

I will post some pictures later. 

Avatar
Chuck
Member
WACA Member
Forum Posts: 6334
Member Since:
March 31, 2009
sp_UserOfflineSmall Offline
2
January 29, 2026 - 1:45 am
sp_Permalink sp_Print sp_EditHistory

I’m back.  Here are the pictures of my slugging tools and the 2 slugs just into the bore.  I like polished stainless rods with all the edges removed the best.  Short, about a foot long, wooden dowels next. The shorter ones won’t bow when you use them.  You will need a couple of sets for the different calibers.  I forgot to take a picture of the brass hammer.

Slugging-Rods.jpgImage Enlarger

Starting-First-Slug.jpgImage Enlarger
Starting-2nd-Slug.jpgImage Enlarger

The 1st attempt at slugging I used a .424″ solid lead ball.  The 2nd attempt I used a .457″ ball.  The smaller ball was OK but the 2nd attempt with the larger ball is a lot better. 

Next is the neck mandrel.  This one goes from 30 Cal to 40 Cal.  The mandrel sticking up through the plate then the case over the mandrel.  The last pic shows the successful attempt to squeeze the case, the failure, the mandrel, an original cartridge.  The bottom area you see the bullet I will use, the first slug and the second slug.  See how the smaller ball creates a small round slug and the other ones is longer and easier to measure.

Neck-Sizer.jpgImage Enlarger

Neck-Mandrel-and-Case.jpgImage Enlarger
Sqeezing-the-Neck.jpgImage Enlarger
Cases-Slugs-and-Expander.jpgImage Enlarger

Avatar
TXGunNut
Northern edge of the D/FW Metromess
Member
WACA Member
Forum Posts: 6983
Member Since:
November 7, 2015
sp_UserOfflineSmall Offline
3
January 29, 2026 - 1:52 am
sp_Permalink sp_Print

Big progress on the first day! Good that the bullets on hand are going to work for you. You’ll be an Express Expert before long. 

 

Mike

Life Member TSRA, Endowment Member NRA
BBHC Member, TGCA Board Member
Smokeless powder is a passing fad! -Steve Garbe
I hate rude behavior in a man. I won't tolerate it. -Woodrow F. Call, Lonesome Dove
Some of my favorite recipes start out with a handful of depleted counterbalance devices.-TXGunNut
Presbyopia be damned, I'm going to shoot this thing! -TXGunNut
Avatar
Chuck
Member
WACA Member
Forum Posts: 6334
Member Since:
March 31, 2009
sp_UserOfflineSmall Offline
4
January 29, 2026 - 2:05 am
sp_Permalink sp_Print

I don’t know about expert, but I will have shot the 3 calibers that can be found.  I wonder where the 2 50 EX’s are?  It would be like finding a 50-105, or maybe worse. 

Avatar
Anthony
Member
WACA Member
Forum Posts: 1369
Member Since:
December 9, 2002
sp_UserOfflineSmall Offline
5
January 29, 2026 - 11:22 am
sp_Permalink sp_Print sp_EditHistory

Chuck,

I agree with Mike, as you’re making great progress, and especially on the first day. A very good detailed explanation, of the first day’s progress. It’s frustrating when the case starts to split, but that does go with the territory unfortunately, as you’re well aware of. A great job slugging the barrel, as I like you’re approach. 

I do have to say that you’re teasing us with the picture of the end of the Octagon barrel, showing the flip down front sight. Is that a #3, or #4 barrel, on it?

(I went back to the .38 EX. post, and saw the letter, showing the #4 barrel). 

I know that you’re busy with you’re load development, and will eventually post some pics, so with patience being a virtue, I’ll stay vigilant. LOL!

I did have a John Browning Original rifle, serial numbered below 200,(mfg. 1880-1883), with a thick, (1 1/4 inch at the muzzle), 30 inch Oct. barrel, in the .50 caliber, but I doubt that was an Express, as I know that you’re referring to the two, 50 EX. Caliber rifles in Bert’s survey. I think the 50 Ex. first became available in 1887, for the M-1886 rifle. So in all reality, the Browning Bros. rifle in .50 Cal. was not in the .50 Ex! 

Keep it coming, and good luck with you’re progress!Smile

 

Anthony

Avatar
Chuck
Member
WACA Member
Forum Posts: 6334
Member Since:
March 31, 2009
sp_UserOfflineSmall Offline
6
January 29, 2026 - 5:06 pm
sp_Permalink sp_Print sp_EditHistory

Anthony said
Chuck,
I agree with Mike, as you’re making great progress, and especially on the first day. A very good detailed explanation, of the first day’s progress. It’s frustrating when the case starts to split, but that does go with the territory unfortunately, as you’re well aware of. A great job slugging the barrel, as I like you’re approach. 
I do have to say that you’re teasing us with the picture of the end of the Octagon barrel, showing the flip down front sight. Is that a #3, or #4 barrel, on it?
(I went back to the .38 EX. post, and saw the letter, showing the #4 barrel). 
I know that you’re busy with you’re load development, and will eventually post some pics, so with patience being a virtue, I’ll stay vigilant. LOL!
I did have a John Browning Original rifle, serial numbered below 200,(mfg. 1880-1883), with a thick, (1 1/4 inch at the muzzle), 30 inch Oct. barrel, in the .50 caliber, but I doubt that was an Express, as I know that you’re referring to the two, 50 EX. Caliber rifles in Bert’s survey. I think the 50 Ex. first became available in 1887, for the M-1886 rifle. So in all reality, the Browning Bros. rifle in .50 Cal. was not in the .50 Ex! 
Keep it coming, and good luck with you’re progress!
 
Anthony
  

The 38, 40, 45 and 50 EX 3 1/4″ cartridges can only be shot in the 1885 highwalls.  The 1886 50 cal cartridges are way shorter to be able to cycle.  John Browning rifles were never chambered in any of these calibers.  Bert will know the calibers. 

I thought I posted a picture of the rifle in the 38 EX Forum?

PhotoScan-2.jpgImage Enlarger

Win-40-EX-1.jpgImage Enlarger

sp_PlupAttachments Attachments
Avatar
Anthony
Member
WACA Member
Forum Posts: 1369
Member Since:
December 9, 2002
sp_UserOfflineSmall Offline
7
January 29, 2026 - 10:38 pm
sp_Permalink sp_Print

Makes sense Chuck,

Thanks for adding that!

I didn’t see the pics in the .38 Ex. post! Smile

 

Anthony

Avatar
Chuck
Member
WACA Member
Forum Posts: 6334
Member Since:
March 31, 2009
sp_UserOfflineSmall Offline
8
January 30, 2026 - 12:42 am
sp_Permalink sp_Print

I loaded one round today and will shoot it Tuesday.  Since I am fire forming the brass I used 75 grs of FFG and a filler so the bullet compresses the load.  Some of the same issues as with the 38 EX.  Shrinking the neck caused it to be too thick.  It will go into the chamber but it is tight.  The bullet doesn’t have a lot of neck tension.  I am able to use the 40-65 FL die to squeeze the neck some but not quite enough. 

Avatar
Chuck
Member
WACA Member
Forum Posts: 6334
Member Since:
March 31, 2009
sp_UserOfflineSmall Offline
9
February 3, 2026 - 11:55 pm
sp_Permalink sp_Print

I shot the one round today.  Even with the low powder charge the primer backed out a small amount.

Her is a picture of the case before forming, an original cartridge and the fire formed case.

40-EX-1st-Fire-Formed-Case.jpgImage Enlarger

sp_PlupAttachments Attachments
Avatar
Bert H.
Kingston, WA
Admin
Forum Posts: 13775
Member Since:
April 15, 2005
sp_UserOfflineSmall Offline
10
February 4, 2026 - 12:34 am
sp_Permalink sp_Print

Chuck said
I shot the one round today.  Even with the low powder charge the primer backed out a small amount.
Her is a picture of the case before forming, an original cartridge and the fire formed case.

  

Headspace issue?

WACA Historian & Board of Director Member #6571L
High-walls-1-002-C-reduced2.jpg

Avatar
Chuck
Member
WACA Member
Forum Posts: 6334
Member Since:
March 31, 2009
sp_UserOfflineSmall Offline
11
February 4, 2026 - 2:29 am
sp_Permalink sp_Print sp_EditHistory

Bert H. said

Chuck said
I shot the one round today.  Even with the low powder charge the primer backed out a small amount.
Her is a picture of the case before forming, an original cartridge and the fire formed case.
  

Headspace issue?
  

No, probably just trying to move so much brass.  It will calm down after the forming.  Believe me these cases are very tight and it takes effort to get the action closed against the case.   Stupid me forgot to turn on the chronograph. 

Forum Timezone: UTC 0
Most Users Ever Online: 5406
Currently Online: win4575, 426crown, tionesta1, John Lindly, Steven Gabrielli, Reddog, Zebulon, Blue Ridge Parson, Dave K, M64lvr, Bo Rich, MidwestCrisis
Guest(s) 1202
Top Posters:
clarence: 7119
TXGunNut: 6983
Chuck: 6334
steve004: 5436
1873man: 4816
deerhunter: 2822
twobit: 2605
Big Larry: 2578
mrcvs: 2318
Maverick: 2132
Newest Members:
Pennview
SCWayne
Merchant of the Old West
wjw
winfan
Ranger55
GeorgeJ
Rshell
Stevepala
Angelo Colletti
Forum Stats:
Groups: 1
Forums: 18
Topics: 15408
Posts: 139296

 

Member Stats:
Guest Posters: 2057
Members: 10388
Moderators: 3
Admins: 4
Administrators: Mike Hager, Bert H., JWA, SethJ
Moderators: Rob Kassab, Brad Dunbar, Heather
Navigation