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Discussion Starter · #1 ·
For those of you guys that push 450gr(+plus) bullets at max velocity in the 45/70, what powders deliver higher velocities? I am not planning on loading max 45/70 loads, I am just curious about powder burn rates and effectiveness in 45/70s when the bullets get extremely heavy.
 

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Lots will work including H4895, IMR4895, 3031, Rel 7, Rel 10, H4198, IMR 4198, AA2495, AA2520, XMP5744, H322, 2400, IMR 4227, etc. etc.
 

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Discussion Starter · #3 ·
Dr. A, that is basically the list of powders that work. I was just curious if there is one or two among them that deliver the higher max velocities than the others?
 

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Here is some Beartooth data:

H4895 looks good.

Loading Data BTB-.45-525gWLNGC "Pile-Driver" in .45-70 Govt.
All loads using Starline .45-70 Govt. brass, Winchester Large Rifle Primers, Cartridge Overall Length 2.557" .
PowderCharge Wt. Gr.Velocity 22" Bbl.Velocity 20" Bbl.
AA 249545.015201486
IMR 419842.716121562
IMR 303142.816831621
H-489552.518201752
RL-744.317051648
IMR 422728.014.4313.92
240024.013461283
H-32241.016101549


 

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Holy black!!! Just fill up the case with enough room for the bullet (compressed about .125"). Depending on the density of the BP you are looking at 65-70 grains. Remember that where the 45-70 started!!!

DD
 

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I loaded up quite a few different charges but this is the one I like the best and the Chrony data for that load and it shoots MOA to 100 yards I did not try for 200:

Marlin 1895 SBL 18" barrel
Beartooth 525gr Pile-Driver bullet
Starline brass
Winchester LR primers
H322 40.5 grains

Shot FPS
1 1538
2 1514
3 1514
4 1531
5 1512

Max 1538
Min 1512
Avg 1521
SD 0011

I am still waiting on my order of Crater 550gr bullets to arrive.
 

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I loaded up quite a few different charges but this is the one I like the best and the Chrony data for that load and it shoots MOA to 100 yards I did not try for 200:

Marlin 1895 SBL 18" barrel
Beartooth 525gr Pile-Driver bullet
Starline brass
Winchester LR primers
H322 40.5 grains

Shot FPS
1 1538
2 1514
3 1514
4 1531
5 1512

Max 1538
Min 1512
Avg 1521
SD 0011

I am still waiting on my order of Crater 550gr bullets to arrive.
Excelent choice of powder and weight with the Piledriver. With JB Youngs 550gr I use 40gr of H322 and it comes out at almost the same as the Piledriver.
 

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Using 51.0gr of Re15 (compressed moderately heavy and with a crimp applied using a Lee Factory Crimp Die to prevent the bullet from backing out), Winchester brass, CCI 250 primers and 500gr Hornady RN bullets: I get 1525 fps from the 18.5" barrel Guide and 1625 fps from the 24" barrel XLR. Pressures are relatively low in my particular rifles only.

In the Ruger No.1, if I use 58.0gr of Re15 I get 1750 fps. The Ruger allows the bullet to be seated out much further, no need to compress the powder to seat the bullet. Recoil is a bit stiff in such a light rifle and I would rather not break the stock. So I settled on 44.0gr of Re7 and get a muzzle velocity of 1600 fps. More than enough speed to stomp any moose at close range. :biggrin:



 
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