RL7 with Hornady 45-70 350gr FP

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loooongshotz

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Seems a paucity of data for 350gr jacketed bullets and RL7. Current Alliant manual only lists 300 & 400 gr 45-70 bullets. I have a Hodgdon #25 manual listing it. However, I seem to recall that RL7 underwent some changes a few years back, perhaps rendering the data unusable.
I've sent an email to Alliant on this, but have yet to get a response.


Any guidance, go to or other input appreciated.
 
RL7 is not a powder listed for the 350 grains jacketed bullet in the last Lyman manual.
They list RX7 but it is a different powder - nothing to do with RL7.

RL7 is a good powder for lead bullet..why use that for jacketed ?
Myself I would use IMR 3031, it is listed for level 1-2 and 3 rifle, lead or jacketed for the 350grains bullet, and give good to very good accuracy in the 45-70 caliber.
 
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Lyman 50th shows 46.5 grains of Reloder 7 (RX7) under the Hornady 350 grain FP bullet as maximum for the Marlin.


Janeau said:
RL7 is not a powder listed for the 350 grains jacketed bullet in the last Lyman manual.
They list RX7 but it is a different powder - nothing to do with RL7.
Click to expand...



Read the powder intro in the Lyman manual and it is spelled out quite clearly that their abbreviation for Reloder 7 is RX7.
 
BTW, Reloder 7 is a great powder for jacketed bullets in the 45-70 and will easily push a 350 grain jacketed bullet to just over 1800 fps in a Marlin 1895.
 
You can't go wrong using 400 grain load data for a 350.
Personally, I'd consider a midway extrapolation.
Propellant Profiles Sixth Edition (2016) doesn't hint at any change in characteristics in Bofors contracted manufacture from the original 1965 Hercules production.
I've got a 2017 Alliant pdf from their website that has trapdoor loading 7 grains less for 350 (versus 300 projectile) at 35 grains for 1458 fps.
 
Bubba Yugga said:
You can't go wrong using 400 grain load data for a 350.
Personally, I'd consider a midway extrapolation.
Propellant Profiles Sixth Edition (2016) doesn't hint at any change in characteristics in Bofors contracted manufacture from the original 1965 Hercules production.
I've got a 2017 Alliant pdf from their website that has trapdoor loading 7 grains less for 350 (versus 300 projectile) at 35 grains for 1458 fps.
Click to expand...

Thanks for the info update Bubba Yugga. My Hodgdon #25, printed 1990, lists 48gr RL7 as max.
 
Choose data for the appropriate strength of your rifle.
I.E. Not data for a Ruger #1 or#3 in a Springfield!!

.45-70 Government
Warning!
Be Alert: Publisher cannot be responsible for errors in published load data.

Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS) Favorite?

350 Speer Alliant RL-7 38.5 1,564
Remarks:#group: 1.5 inches
350 Speer Alliant RL-12 55 1,850

.45-70 Government (Ruger #1!!) (Using Hornady Bullets)
Warning!#Notes:#This data was shot by Brian Pearce, Wolfe Publishing Company. Gun: Ruger No. 1; barrel length: 22 inches; case: Starline; primer: Federal 210; bullet diameter: .458"; 350 GR Hornady RN COAL: 2.550", 350 GR Hornady FP COAL: 2.545", 500 GR Hornady DGX & DGS COAL: 2.925"; maximum COAL: 2.925"; maximum case length: 2.105"; trim to length: 2.095".

To view the special notes#click here.
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS) Favorite?

350 Hornady RN or FP Alliant RL-7 44.8 1784
Remarks:
350 Hornady RN or FP Alliant RL-7 47.5 1873
Remarks:
350 Hornady RN or FP Alliant RL-7 50.2 1977
Remarks:
350 Hornady RN or FP Alliant RL-7 52.8 2081
Remarks:
350 Hornady RN or FP Alliant RL-7 55.5 2181
Remarks: maximum load

.45-70 Government (Trap-Door Actions) (Speer Reloading Manual #14)
Warning!#Notes:#max. case length: 2.105"; trim-to length: 2.095"; max cart. OAL: 2.550"; RCBS shell holder: #14; cart. case: Winchester; primer: CCI 200 (except where otherwise specified in remarks); test firearm: Custom single-shot; barrel length: 26"; maximum loads should be used with caution
Be Alert: Publisher cannot be responsible for errors in published load data.
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS) Favorite?

350 Speer MT SP Alliant RL-10X 32 1347
Remarks:#start charge
350 Speer MT SP Alliant RL-10X 36 1481
Remarks:#maximum charge
350 Speer MT SP Alliant RL-7 31 1294
Remarks:#start charge
350 Speer MT SP Alliant RL-7 35 1458
Remarks:#maximum charge

.45-70 Government 1895 Marlin (Using 350 GR Hornady Bullets)
Warning!#Notes:#This data was shot by Brian Pearce, Wolfe Publishing Company. Gun: Marlin Model 1895; barrel length: 22-inches; case: Starline; primer: Fed 210; bullet diameter: .458"; Hornady RN COAL: 2.550"; Hornady FP COAL: 2.545"; maximum COAL: 2.550"; maximum case length: 2.105"; trim to length: 2.095".
Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS) Favorite?

350 Hornady RN or FP Alliant RL-7 38.3 1492
Remarks:
350 Hornady RN or FP Alliant RL-7 40.6 1564
Remarks:
350 Hornady RN or FP Alliant RL-7 42.9 1650
Remarks:
350 Hornady RN or FP Alliant RL-7 45.2 1735
Remarks:
350 Hornady RN or FP Alliant RL-7 47.5 1820
Remarks:
350 Hornady RN or FP Alliant RL-7 49.8 1898
 
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Hornady 10th Edition, 1895 Marlin Data, Page 759

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