Don't know about the Hornady 410 gr, but the Remington 405 g at 1000 fps will go through 16 one gal water jugs and keep on going. When your talking about 400 gr bullets, penetration isn't the issue.

 

This is a subsonic load designed for supressors. As stated above, a 410-grain bullet should have no issues in penetration, as proven by many handgun hunters. The only caveat is that most bullets of this weight don’t expand so are effectively solids. This particular bullet is designed for some expansion so…..?




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Shooting the 410 Gr. Sub-X and it's downright one of the best factory loads I tried so far for the 45-70. Works sweet with a supressor as well.

 

As An aside using MBC 410g SOCOM over 15.5g of Trail Boss I get 1089.5 fps. with a low average deviation (8).

 

link

Subsonic Jacketed loads for 45-70 | Marlin Firearms Forum (marlinowners.com)

 

Pretty much the way to find useful expansion and vastly increase the efficient lethality of bullets at these velocities, is to copy the dramatic effect of Civil War musket loads at 1000 fps standard , that is cast pure lead bullets. Best part, is the bullets cost about 10 cents each, pure lead being about $2.09 a pound at the moment. The molds can even be purchased with a hollow point feature added.

Bullet Design Details | Accurate Molds

www.accuratemolds.com

 

The 410 Sub-X bullet can be driven supersonic as well. It is designed to open up at lower velocities but can be driven at up to 1650 fps. The problem with lead bullets is, well, lead. I have decided that two of my four 1895 rifles may not use lead bullets anymore. I finally got the lead cleaned out of the barrels on my two SBLs and am loath to run lead in them. My new GBL will get the lead bullet duty. I do wish we could still get the Remington jacketed 405 but this new Sub-X is an expensive alternative, maybe.

 

3crows - the leading was likely caused by undersized bullets or you are driving them too fast. With the appropriate size and alloy you can drive lead bullets with accuracy up to the limits of the rifle.

I used to use jacketed but exclusively use lead these days. I have moulds for every conceivable purpose from 260 SWC up to 520gr RNFP, including a couple of HP moulds.

 

Off subject but I think the OP gave up .

Thanks. I am not pushing the lead bullets fast I do not think. Typically 900 to 1500 fps. This to include the HMS and Black Hills Cowboy. I am shooting mostly MBC and Oregon and at .459 which slugs correct for my rifles. I have found that the MBC bullets with the HighTek coating do not lead or minimally. I loved the Remington jacketed 405. I bought them as I needed them thinking I had enough and got caught flat when they were NLA. Fortunately that was the only thing I got caught on as I have plenty of reloading fixings to keep me going, just not many R405s left in the box. The Hornady bullet looks interesting and may have some uses but it is not what I am looking for as a general purpose load, wishful thinking aside.