N110 is an excellent choice for both the .44's and .45's! Wherever H110/W296 is appropriate, so too is N110. N110 has a lower flame temperature, and seems to be a bit more uniform in it's pressure curve when working up loads, meaning that it is easier to predict both pressures and velocities while doing those work-ups.
The data for the powders is NOT interchangable on a grain for grain basis. However, if you use the starting loads for the H110/W296 as a baseline for N110 you are in safe territory.
We are awaiting some additional primer information from the folks at Vithouvouri, and then their entire latest edition loading manual will be live for your use on LoadSwap.com. We are awaiting this information from overseas, and perhaps will make that resource available this week to all!
I really like N110, the problem is that distribution of the powder in some geographic areas is very limited at best, and the price is about 30% higher than H110/W296. However, in some applications I wouldn't mind the price, just for the very predictable and uniform performance!
Here's some info from FA's load data. It's for the 454, but you can still use it to compare several of the common powders. From this you can see, as Marshall said, that it's not a direct replacement for H110. But it does generate very good velocity with low pressures. Also N110 is that it can be downloaded by up to 15% of MAX (based on Vithavouri). According to Hodgdon, H110 should not be loaded below 3% of MAX. I have there manual on order, but don't expect it for a couple of weeks. I could give you some better info then, if you're still looking. By the way, Vihtavouri is discontinuing the 8lb jugs of N110. Midsouth has a few left for ๨.00.
www.lapua.com/vihtavuori is where I found the info I posted. Nammo Lapua Oy is marketing and distributing Vihtavuori Reloading powders around the world. The load data itself, however, is supplied by Vithavouri.
Vithavouri classifies N110 as a rifle powder, not a pistol powder. Under rifle data, every load I checked used N110 and had the same caution using about a 15% reduction for a starting load.
They do have some load data for pistols using N110, but it seems to be only for magnum pistols (as far as I could tell), i.e. the 45 Winchester mag, the 44 mag, 357 mag, 357 maxim... again all with the same caution about 15% reduction for a starting load.
The load reduction, by the way, is not just for N110, but for all the powders listed for any particular caliber.
I read a post just today from someone who has used N110. His comments were that it meters well, burns clean and seem to be accurate and a little easier on the gun.
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