Please consider registering

Register | Lost password?
Advanced Search

— Forum Scope —

— Match —

— Forum Options —

Minimum search word length is 3 characters - maximum search word length is 84 characters

sp_Feed Topic RSS sp_Print sp_TopicIcon
45-70 or 45-90 ?
October 15, 2019
2:24 am
Kingston, WA
Forum Posts: 10066
Member Since:
April 15, 2005
sp_UserOfflineSmall Offline


I suggest loading the 45-90 with IMR 4198, start with 34-grains and work it up to the original factory velocity.


WACA 6571L, Historian & Board of Director Member

October 16, 2019
1:33 am
WACA Member
Forum Posts: 1667
Member Since:
March 31, 2009
sp_UserOfflineSmall Offline

TXGunNut said

It’s just that I haven’t found a smokeless powder that works for me in my 45-90’s. My theory is that big case just has too much empty space with any reasonable charge of smokeless powder. To be quite honest I haven’t tried an 1886, only a couple of Sharps rifles. It simply be my BP bias, hard to say. 😉 I think the 1886 has a slower twist than the Sharps but that is likely the difference between an express rifle and a buffalo gun. 



Mike, I put a wad of toilet paper over the powder just long enough to touch the base of the bullet after it is seated.  This keeps all of the powder down at the primer. 

Bert, I use 31 grains of 4198 for 1,540 fps.  25 grains of 4759 is about the same.  3031 is not as accurate as the other two, in my guns.  These are all 10 shot chonographed loads.

October 16, 2019
1:47 am
Northern edge of the D/FW Metromess
WACA Member
Forum Posts: 2411
Member Since:
November 7, 2015
sp_UserOfflineSmall Offline

Bert H. said
I suggest loading the 45-90 with IMR 4198, start with 34-grains and work it up to the original factory velocity.

Thanks, Bert. I think you’ve shared that with me before but I haven’t got around to trying it. Used 4198 in 45-70 when I was trying to duplicate Hornady’s LeveRevolution ammo but that’s a whole ‘nuther topic. My current 45-90 load is a Lyman 457125 over a lightly compressed load of Swiss 1 1/2 fg. Still looking for a Winchester to try it in. 


Mike30B4901E-6555-47A5-9CFB-AD48831C7CE4.jpegImage Enlarger

Life Member TSRA, Endowment Member NRA
BBHC Member, TGCA 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
Forum Timezone: UTC 0

Most Users Ever Online: 628

Currently Online: JWA, clarence, TR, Big Mac
66 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Forum Stats:

Groups: 1

Forums: 16

Topics: 7389

Posts: 61346

Member Stats:

Guest Posters: 1006

Members: 9368

Moderators: 5

Admins: 3

Top Posters:

1873man: 4324

twobit: 2563

TXGunNut: 2411

clarence: 1802

Chuck: 1667

Maverick: 1566

Big Larry: 1425

JWA: 1319

Wincacher: 1185

jwm94: 1092