Suggestions for a "big and slow" caliber?

[Potashminer]

"Big and slow"- I had that itch. Started with 45-70 as others have suggested. Always wanting to play with "a bit more" - found myself eventually pushing 45-70 top end. Decided to sell it and bought a 458 Win Mag. Factory 510 grain full house in 8 1/2 pound rifle is quite enough for me. Then bought a bunch of cast 485 grain from jethunter that has the nose for the 458 WM, instead of for the 45-70. Annealed a bunch of 7mm Rem Mag cases, used Unique and Cream of Wheat to blow them out sort of straight, and loaded up the 485 cast bullets to probably 1100 fps. (I did not chrono them). Went shooting gophers. Perfect!

 

[brybenn]

I have more than once thought about the same thing, a cartridge that is big and slow but can deliver a heavy bullet with authority.
Not an elegant rifle but the Baikal MP-221 in 45-70 is what I would look at.

David

Perfect for black bears. 405gr rem bulk jacketed in the left and a 405gr wide flat nose oregon trail hardcast silver alloy in the right. Never needed the hardcast. Them rem bullets at 1550fps expand beautifully and plow on thru

 

[tikka]

Big and slow .
45-70
.444
35 Rem

Although I dont really consider
the 358 / 35 Whelen or the 350 Rem Mag big and slow..but rather mid range which all pack some heavy punch..
2 thumbs up on all.