Need starting load for 470 Capstick

[358 Norma]

I was wondering if anyone had a starting load for the 470 Capstick using a Swift 500 grain A-frame and H4895 powder? I was thinking 77 grains to start with but not sure. Hoping to eventually get to my desired velocity of 2300fps. Any help would be appreciated.

 

[358 Norma]

Bump

 

[HWL]

I do have a .470 Capstick also. If you want, I can calculate a load on Quickload when I am back home.

HWL

 

[358 Norma]

Thanks, that would be great!

 

[Ray B]

I was looking for a 470 Capstick a few months ago but came across a 475 Turnbull so got it instead, so I don't have any load data to help- sorry.

 

[AustinM]

I have Art's book with his reloads, I'll take a picture of the 470 data, when I get to the book.

 

[Hsk]

The .470 Capstick is a wildcat with no official Hodgdon data, so everything's from handloaders and QuickLOAD guesses start low and work up carefully, watching for pressure signs flat primers, sticky bolt, etc.

Real world reports with H4895 and 500gr bullets Barnes, Woodleigh, etc.

One guy ran 72gr for 2260-2290 fps in a 24" barrel solid, accurate load.
Others pushed 85 -90gr for 2300-2400 fps, but that's hot compressed, high pressure.

Your 77gr starting idea is reasonable per some QL estimates hits 2100-2200 fps safe, but I'd drop to 70-72gr to play safe with the Swift A-Frame bonded, expands well

2300 FPS is doable cartridge goal, but expect 80-85gr max depending on brass/barrel test in 1gr increments.

No specific Swift A-Frame data, but it should behave like Barnes TSX. Use magnum primers, good brass Bertram Peterson. That velocity with A-Frame will wreck anything good luck!

 

[matt85]

Id wager that 458 Lott data would work. There isnt a huge difference between the cartridges. The Capstick has slightly more case capacity and the 474" bullet has less surface area, so 458 lott loads will generate slightly less pressure.