I will probably have the cylinder reamed to 10mm mag when I get one. I reload for 10mm, no big deal to add 10mm mag to the list.

I bought one last fall an love it.  It is under my 357 Blackhawk I bought in 1976.



I have been impressed enough with it that I have one with a shorter barrel on order.

I liked mine so much I bought it in the shorter barrel also.  Here with a 357/9mm convertible.



And a Ruger SR1911-10

I'm liken this possibility, look like a  whole lot of fun to me : )

...now if we could only get STARLINE to make some .401 PowerMag brass...

Quote from: RJM52 on December 07 2019 06:23:55 AM MST
...now if we could only get STARLINE to make some .401 PowerMag brass...

Buy a Ruger Super Redhawk in 10mm. Have your favorite gunsmith re-cut the cylinder to 10mm Magnum- reamers and go/no-go gauges are readily available. Buy some ammo from Double Tap or others, or buy some brass from Starline or Graf's (I'm sure others have it too) and load your own.

Now you have (better than) a .401 Powermag, with available dies, brass, and guns. I have a 10mm Magnum AMT and a Contender barrel. The Contender I shot often, the AMT is on display in my home office so I don't blow up a collectible.

If you have a Herter's Powermag revolver, I would recommend doing the same thing- they are irreplaceable. Buy a 10mm Contender barrel, ream it to the Powermag chamber, shoot your .401's that way. That is, IF you have brass and dies.

I won an auction on GB tonight for $620 for a stainless Ruger 10mm with two cylinders. I'm looking forward to shooting the heck out of it, it was a Christmas present to me

You will enjoy it.

So here we are a year later and I have not yet shot it, still in the safe in virgin condition. 2020 was a year to be forgotten.