Load Data for 45-70 Barnes 300 Grain TSX FN HP

[Quigly]

Hi,
As the title states, I am looking for load data to load some 300 gr. TSX for my 45-70. I will buy the Barnes
No.4 manual off anyone that would be willing to sell it. Failing that could someone kindly send me a photo of that particular page in the manuel. I will be using either IMR 4198 or Rel #7.
I could try guessing at a starting load, based on cup and core bullets, but I would rather be safe than sorry, because I realize that monolithic bullets build more pressure than traditional cup and core bullets.
Thanks, in advance to anyone that might be able to help me out.

 

[mbogo3]

What gun first ?

 

[mbogo3]

https://www.barnesbullets.com/load-data/

 

[Quigly]

What gun first ?

Marlin 1895 GBL, and Matlin 1895SS

 

[Quigly]

https://www.barnesbullets.com/load-data/

Thank you, but the Barnes site does not list the bullet, or the powders I'm using.

 

[hatman1793]

The Hodgdon 2019 Annual reloading manual doesn’t specify list your bullet of choice, however it does list two 300 grain bullets of similar weight.
The two powders are IMR 4198 & H4198. Here goes:
300 grain Barnes TTSX 50.0 grains of IMR 4198 @ 2207 fps. 53.0 @ 2323 fps
300 grain SIE HP 54.0 grains of IMR 4198 @ 2253 fps…..58.5 grains @ 2450 fps.

Pretty stout loads! Hitting 2000 fps is beyond awesome for 45-70 but watch out for recoil.

 

[Peecos]

45-70

Barnes manual #4, unfortunately there’s no one powder shared between the two bullets for comparison.

 

[Peecos]

I have some Barnes factory ammo with that bullet that I chronographed. If I remember correctly it was the same as my muzzle loader with 45cal 300gr XTP, which is around 1850 fps. I don’t have it written down in my book though so can’t verify. Recoil in my 1895 is not excessive with that ammunition.

 

[Quigly]

Barnes manual #4, unfortunately there’s no one powder shared between the two bullets for comparison.

Thank you, very much for the load data, and the information on the factory loads. I have a box of factory 300 grain TSX that shoot very well in my Marlins. Knowing their velocity will be of great help developing a load, now that I have a chronograph.
Again, thank you.

 

[Quigly]

The Hodgdon 2019 Annual reloading manual doesn’t specify list your bullet of choice, however it does list two 300 grain bullets of similar weight.
The two powders are IMR 4198 & H4198. Here goes:
300 grain Barnes TTSX 50.0 grains of IMR 4198 @ 2207 fps. 53.0 @ 2323 fps
300 grain SIE HP 54.0 grains of IMR 4198 @ 2253 fps…..58.5 grains @ 2450 fps.

Pretty stout loads! Hitting 2000 fps is beyond awesome for 45-70 but watch out for recoil.

Are you sure those are 45-70 Marlin loads. Not knowing better I would say those are loads meant for a Ruger #1, or possibly a 458.