It depends on the bullet you're using, but for a 180 grain Speer, Accurate has choices. The Accurate 2015 shows velocity up to 2700 fps.
Using a 200 grain bullet, Hodgdon powders you have used without good results or are unavailable are your choices.
The Accurate 2520 shows velocity up to 2404 using a 220 grain bullet in .358 which could be hard to find for use in tubular magazines..
For the 250 grain bullet we're back to the Hodgdon powders that are either not available or too slow for your needs or use.
Winchester has 748 and 760 but they are off the charts slow for only the 220 grain bullets.
I have a 1981 reloading manual published by the NRA. Like an idiot I went to look in it for load data. In 1981 the .356 hadn't even been chambered, yet. DUH. I guess I've been reloading for a few years.
It appears to me the H4198 is your ideal powder and why it hasn't been available is a mystery to me. I use the IMR 4198 for my .444 Marlin and .45-70 with very good results but even the IMR 4198 is unavailable and for quite some time, now.
Good luck with the N133. I have never used VV powders.

 

I use IMR-4895 with a 200 gr bullet in my 358 Win rifles. Very good velocity and accuracy. That powder is available in my locale and online.

 

I have worked up loads and tried the mentioned powders. I settled on loads using H335 and AA2460. Search .356 post by drs, not drs2. They are my post but somehow never could access the forum with it. Lots of info from where I tried working up loads for my 2 Marlin ER, Win. .356s.

 

Win 748 gave me good results with a Sierra or Hornady 200gr RN. H335 was also decent with these 2 bullets.

I also just tried AA2015 with the 180 Speer, very accurate, I was a couple of grains under max guidelines in the Speer book.

Back to 748, when I first tried that powder, I was using a regular large rifle primer, results were okay, then I tried a Magnum Primer, groups tightened up considerably. Again, my best accuracy was a grain or two from published data.

With a 220 Speer, mine liked H4895 and H335, but unfortunately that bullet is no longer available from Speer.

 

I know Speer discontinued the .358 220 grain. That frosts my butt. Buffalo Boar loads a 220 in their .35 Rem ammo. I wonder where they get their bullets? However, when is the last time you've seen any Buffalo Boar loaded .35 Rem ammo? It's always out of stock.

 

I picked up a bunch of the Hornady 250 gr round nose bullets before they were discontinued. Some say they work with the 356 win, some say they don't. But from what I read on the interwebs BLC2 is supposed to be a good powder for that weight. Hopefully I will get the '94 out this summer and find out.

 

North Fork Bullets has 200 gr, 225, 250 and 270 in .358. These are semi-spitzers but appear to be safe in a tubular magazine. They also have a cup point that should be safe in tubular mags as well. They are very pricey, however. They do not make a 180 gr in .358 cal.

 

Fury has 220gr bullets...https://www.furycustombullets.com/shop-2/35-caliber/358-220-grain-flat-point-bonded-50-pack/

 

I use same amount of tac for 220 speer at 2450 fps and hornady ftx to 2550 fps. No pressure signs very accurate compressed load

 

I’m just throwing this out there as something I feel would be worth looking into….Reloader 7? I know it has a very close burn rate to IMR 4198. Midway has it in stock.

 

I did some loads with RL-7 with a 220 Speer, pretty accurate in my 336ER. Velocity is around 2100, not as much as you can get with other powders. 37.0 grains was my best grouping load with that powder. I have seen data for RL-7 with 180 and 200 grain bullets.

 

Well, I brought it up because I was thinking it was close to IMR4198. I use Nossler load data as a reference often because I like their online search engine and while they don’t list 356Win they do list 358, and in their chart for 225 gr they show RE7 as the most accurate powder tested. So I thought it worthwhile to mention…

 

Thanks everyone for your replies.
Panam

 

I'm using IMR 4064 with 220 Speer Flat nose for the most accurate load in my 336 rechambered to 356W. Not an easy powder to find and the bullets are mainly found at Gun shows but I lucked into 6 boxes so I'm set. Good luck. IMR 4198 has been going through the roof at auctions.