Miroku 1886 45-90. 405 grain cast bullets loaded to 2.81" in 45-70 brass. 65 grains of IMR 3031. Stiff recoil, shoots great. Super easy extraction. Remington 9 1/2 Large Rifle primers.

Any reason I shouldn't bump it up a little more? 67ish grains would be a level full 45-70 case...

Welcome to the 1886 45-90 crowd. I bought a new Winchester 1886 45-90 because it provided both the 45-70 and 45-90 and I am very pleased with the performance of both cartridges in the US and Africa. The 90 performs well up into the .458 Win Mag range and it takes all African game (ele, buff, leopar...

You can’t compare load data from the 458WM with the 45/90, even though case capacity wise there’s not much difference. The 458WM has an enormous wide and long throat that was designed to blow off pressure quickly and is the reason why the 458 can achieve the velocities that it does from such a rela...

Welcome to the 1886 45-90 crowd. I bought a new Winchester 1886 45-90 because it provided both the 45-70 and 45-90 and I am very pleased with the performance of both cartridges in the US and Africa. The 90 performs well up into the .458 Win Mag range and it takes all African game (ele, buff, leopar...

It has been quite a while since I loaded for 45-90 but was using IMR 3031 and300 grain bullets. From memory it seems like around 64 grains was a 100 precent load. If you are geting 73 grains in the case you must be very heavily compressed. Can you hear powder crunching when you seat the bullet? If ...

GunnyMack wrote: ↑Fri May 03, 2024 4:48 am I've said it before- ask the manufacturer what their product is rated for. Someone's data could very well be dangerous in YOUR gun.

Well, the barrel says "black powder only" so I'm a slight bit over manufacturer recommendations. I knew this going in.

I have been working up some loads in my new Winchester Miroku 1886 in 45-90. I bought it for the sole purpose of a fairly flat shooting big bore big game lever rifle so I was planning on loading it hot right from the start. Currently working with 300 grain jacketed bullets and IMR 3031 in Starline 4...

samsi wrote: ↑Sun Apr 21, 2024 11:53 am Other than that, I'd go with Level 2 45-70 data and do the math for the capacity difference.

What math does one do to extrapolate for the extra case capacity? I assume it is not directly proportional...

Good deal. I would love an Encore in 460 S&W to go with my XVR.

I think there are a couple of people here shooting the 45-90. I shoot the 450 Alaskan, which has a nearly identical case capacity. You can shoot IMR 4350 in it, but it will be inefficient and won't produce top velocities. You might get the 300 grain Hornady #4500 to 2100fps but not much farther wit...

JFE wrote: ↑Tue Apr 23, 2024 7:33 pm
If you PM your email address I can send you copies of the data I’ve managed to find.

Message sent

Ken Waters covered the 45-90 in the March-April '86 issue of Handloader and Greg Mushial's website had a bunch of info from when he was playing around with a converted Marlin '95. Other than that, I'd go with Level 2 45-70 data and do the math for the capacity difference. Have a link or a copy of it?

Griff wrote: ↑Sun Apr 21, 2024 3:25 pm You might PM a member here by the handle "CRS" as I know he loads for a 45-90 1886TD.

Sent him an email.

Anyone have some load data for 45-90 and 300 grain Hornady hollow points and 400 jacketed round nose for my Miroku 1886? Looking for something on the hot side. Varget and IMR 4895 are the only suitable powders I have. Also have LOTS of IMR 4350 I would love to use if there was a suitable load… Start...