Marlin Firearms Forum banner
1 - 14 of 14 Posts

·
Registered
Joined
·
8 Posts
Discussion Starter · #1 ·
Looking for load data using Re7, 425 piledrivers jrs, and 405's.
Hoping to get 1600-1700 fps with 18" barrel.
Mainly brown bear and moose loads.
 

·
Premium Member
Joined
·
7,659 Posts
I am using 42gr RL7 in starline brass with 405 Lazercast with good results.
Should be near what you are looking for
 

·
Registered
Joined
·
367 Posts
405 Cast Performance WLNGC in Remington cases.
Federal 210 primers.
RL-7 powder. 40.00 grains.
Shoots 5 shots, all touching, most overlapping, at 25 and 50 yards.

I don't have a chronograph, but, from what I'm reading, it's right around 1680-1700 fps.
 

·
Registered
Joined
·
661 Posts
Using RD data for the RD 460-425, in Remington cases, you can use up to 42.3g of RL-7 for a velocity of 1727fps and a pressure of 36.8k.

Depending on the case you use, you could up that marginally in proportion to the case volume - Winchester having the largest case volume, Remington having the smallest.

And as usual, above listed info is maximum, so work up to it.
 

·
Registered
Joined
·
367 Posts
steely said:
Made up a few different loads, will test em out this weekend.
Thanks for the info.
I have loaded those Cast Performance 405 WLNGC up to 42.5 gr of RL-7.
Don't know the velocity, but, you will feel that load against your shoulder.
It's not going to 'maim you', but, you'll know that your pushing a hunk of lead!!
 

·
Registered
Joined
·
10 Posts
Under MY 405 CP WFNGC and 425 BTB PD Jr's loads, I use..........;

According to Lyman 49th Edition manual, page 314 under the "Ruger No. 1 and No.3 Only" it shows a 405 grain, "457193" loaded to COAL @ 2.550"

RX7 (Same as Alliant Reloder 7), 46.0grains at 1785fps and 26,100cup,

I use 46.5 grains also under the 405 CP WFNGC, ( I haven't chrono'ed those yet).

On page 311 under the "1895 Marlin and 1886 Winchester Only" data, Lyman doesn't show using RX7 under the 405

Beartooths data shows his 525P PD's loaded to less than 40,000psi with RX7 with 44.3grains. Personally, I use 40.5grains under the 525 PD.

I personally load 46.5grains ignited by a CCI-200 primer under a 425 PD Jr to 2.545"coal. I'm gettin' 1770fps out of my 1895STP, 16.5"bbl and gettin' tem (10)round shot groups of 1.5" groups at 98 yards.

The ten rounds I loaded showed from 1766fps to 1775fps out of the STP. Smallest ES I've ever seen so far.

Temperature outside was about +34F but the STP and ammo were stored in the house about 65 -70F. Shot within a few minutes after bringing outside to shoot.

USE THE ABOVE DATA AT YOUR OWN RISK. I FEEL COMFORTABLE IN USING THIS DATA IN MY RIFLES. Marlin 1895SBL and 1895STP.

L8r,
Michael :)
 

·
Registered
Joined
·
10 Posts
OOOPS, forgot to mention case info.,

Starline cases trimmed to 2.102" using CCI-200 primers loaded to 2.545" COAL

l8r,
Michael :)
 

·
Premium Member
Joined
·
7,659 Posts
Mike64

Where did you get your data for your load of 46.5gr RL7 under Beartooth 425 PD jr?

Ranch Dogs data lists 42.3 gr RL7 at 1727 fps as max for his 425gr bullet.

Just curious.
 

·
Premium Member
Joined
·
7,659 Posts
I thought mike64s 46.5gr RL7 425gr bullet load sounded to hot. So today I surfed around the net looking for loads. I did not find any data showing loads that high. I did find guys using even hotter loads. 48 and even 50grs of RL7 with The 425btb. In Marlins
Where are folks seeing this kind of data?
 

·
Registered
Joined
·
10 Posts
Hey Gaterskiner, :)

Lyman 49th Edition manual, page 314 under the "Ruger No. 1 and No.3 Only" it shows a 405 grain, "457193" loaded to COAL @ 2.550"

RX7 (Same as Alliant Reloder 7), 46.0grains at 1785fps and 26,100cup,

I don't know the conversion math, but I don't believe 26,100cup is near 40,000psi.

Some people load their 45/70 ammo to 40,000psi but I don't feel comfortable shooting that high of pressure in my 1895's.

Beartooth shows 525 Pile Drivers at less than 40,000psi with his data here......... http://www.beartoothbullets.com/open_sight/archive_open_sight.htm/21

Ranchdog does show 42.3 of Reloder 7 at 36,800psi found here,... http://www.ranchdogoutdoors.com/bin/TLC460425RF/data/loadnotes01.pdf

however according to the drawing in the pdf, it shows .600" of his 425 grainer inside the case.

My 425 PD's are .570" into the case.

I haven't measured anymore case head expansion than factory Remington ammo. Actually, my Starline cases measure .4995 at the case head with new cases bought from MidwayUSA about a year ago.

I will say that she's a real thumper at my shoulder though but both my 1895's group under 1.5" with ten rounds at 98 yards. Yes, ten rounds, I use that many when I chronograph you get a average velocity.

Out of my STP 16.5"bbl, I'm gettin' 1770fps average and my SBL 18.5"bbl is gettin' 1836 with between a 9 or 10fps from highest to lowest velocity spread.

l8r,
Michael :)
 

·
Registered
Joined
·
10 Posts
OOOps,

Once I enlarged the picture on Ranchdogs 425 pdf, it shows almost .600", sorry 'bout that!

In Loadbooks USA Copyright 2004, " The Complete Reloading Manual for the .45-70 Government " on page 28 under Lyman bullets it shows;

#457193 420 gr #2 Alloy @ 2.550"oal

RX-7 (same as Alliant Reloder 7) 40.0 @ 1493fps @ 13,500cup

RX-7 (same as Alliant Reloder 7) 48.5 @ 1828fps @ 25,000cup

And under the RCBS data on page 33, under Marlin 1895 with a 22"bbl, it shows;

45-405-FN Wt. 425 GR. Dia. .458"

Re7 @ 46.0 @ 1641, no pressure shown

Re7 @ 48.0 @ 1694, no pressure given

There isn't a OAL given for the RCBS data but since it's shows to be for a Marlin 1895, I just load'em to 2.550"

I know, I know, I Don't believe everything I read.

I did start lower than 46.5 and worked UP to 46.5 grains of RL-7 with the BTB Pile Driver Jr's and I feel it's safe in my rilfles.

No unusual case head expansion or case lengthening before and after firing, no primer flattening or ANY hint of cratering, looked at under a magnifying glass.

However, my shoulder complains a little after shooting a few of these loads. Maybe I'll use a purse between my shoulder and buttstock next time. LOL

PLEASE USE THE ABOVE DATA OT YOUR OWN RISK. AS ALWAYS, START 10% BELOW DATA.

L8r,
Michael :)
 
1 - 14 of 14 Posts
Top