Eric I have a swage die identical to what you show in the photo. It's close to a Metford and it shoots pretty good. You might try different lengths and you will find that when the ogive starts to get longer then the shank the accuracy starts to fall off fast.
Don also sold me a KAL that has that profile and it is a terrible mould for casting parting line fins and it gets used for a core mould for swaging a identical bullet for the .45.
One thing you might want to do and that is, ask around what people use in their 1/19 twist .44-77 for a bullet. I stay away from the elliptical like the money bullets they are ok for close range in the .44-77 but get unstable reaching out. I get along with them in the .44-90bn with a 1/19 twist because they get pushed faster but get to be a problem past 700 yards. They shoot very good in my 17 and 16 twist .44's
The original bullets that Sharps, Maynard, Remington used in the slow twist they used I found is the way to go in the 19 twist barrels. They shoot well past 1500 yards. Below is what I settled on after joining the mould of the month club

The two on the left are of the original bullets I had Brooks duplicate from one I sent him. I told him to make a adjustable mould so I could find out what range of length the 19 twist will handle. After all lengths I settled on the 1.325" for the .44-77. That bullet drops from the mould at 485 gr and it has dropped three Buffalos and it is a fine bullet for the 1000 yard gong matches. The first on the left is the same bullet but it is 1.430" long and I use that bullet in the .44-90 bn 19 twist for long range and it is still usable at the ram line in the .44-77 but fails at the 1000 yard irons.
The Elliptical on the right I use in the 1/17 and 1/16 twist .44's. in the 19 twist it fails.
It's hard to beat the original designed bullet that is a round nose with a long elliptical ogive. I think that is why you see a lot of old pictures of vintage bullets with this bullet.