need help from some body with load book

CCCLVII · June 14, 2012, 09:20 AM

I am looking to make a subsonic load for a 45/70 using jacketed bullets. (.458 caliber)

the bullets I am planning on using are Hornady 500 grain interlock bullets, they come in at 1.38 inches long. The Brass is Winchester and holds 80.3 grains of water. The total over all length of a loaded bullet is 2.55 inches

I am looking for some thing at 950-1000 FPS. The Barrel is 18.5 inches long (Marlin 1895 GG)

I am looking for the fastest powder possible that will still preform satisfactory. I have tried Trailboss and it is not able to get the speeds I need (Tops out about 750 FPS)

I can provide other information as needed

Jimro · June 14, 2012, 09:39 AM

I would try working up a load with Red Dot. There is a lot of data on 13 grains of Red Dot under a 405 gr cast bullet, but not a lot for a jacketed 500 grainer. 13 gr of Red Dot can push the 405 gr pill in the velocity range you want.

What type of firearm are you using?

Jimro

CCCLVII · June 14, 2012, 11:39 AM

This is a a lever action.

Lead Man · June 15, 2012, 10:45 AM

I load IMR 4227 23.0 to 27.0 grains under a 500 grain CAST .459/500 Lee bullet. The velocity SHOULD be in the 1,000 to 1,300 fps range. I shoot this in a 1874 Uberti Sharps 'Quigley'. The barrel is half again the legnth of your Marlin. Anyway it will give you a starting point.

June 14, 2012, 09:20 AM	#1
CCCLVII Senior Member Join Date: April 16, 2012 Location: Idaho Posts: 432	need help from some body with load book I am looking to make a subsonic load for a 45/70 using jacketed bullets. (.458 caliber) the bullets I am planning on using are Hornady 500 grain interlock bullets, they come in at 1.38 inches long. The Brass is Winchester and holds 80.3 grains of water. The total over all length of a loaded bullet is 2.55 inches I am looking for some thing at 950-1000 FPS. The Barrel is 18.5 inches long (Marlin 1895 GG) I am looking for the fastest powder possible that will still preform satisfactory. I have tried Trailboss and it is not able to get the speeds I need (Tops out about 750 FPS) I can provide other information as needed __________________ Always looking for a good hunt!

June 14, 2012, 09:39 AM	#2
Jimro Senior Member Join Date: October 18, 2006 Posts: 7,097	I would try working up a load with Red Dot. There is a lot of data on 13 grains of Red Dot under a 405 gr cast bullet, but not a lot for a jacketed 500 grainer. 13 gr of Red Dot can push the 405 gr pill in the velocity range you want. What type of firearm are you using? Jimro __________________ Machine guns are awesome until you have to carry one.

June 14, 2012, 11:39 AM	#3
CCCLVII Senior Member Join Date: April 16, 2012 Location: Idaho Posts: 432	This is a a lever action. __________________ Always looking for a good hunt!

June 15, 2012, 10:45 AM	#4
Lead Man Junior Member Join Date: June 15, 2012 Location: Cattle Ranch Western Missouri Posts: 3	500 grain 45/70 I load IMR 4227 23.0 to 27.0 grains under a 500 grain CAST .459/500 Lee bullet. The velocity SHOULD be in the 1,000 to 1,300 fps range. I shoot this in a 1874 Uberti Sharps 'Quigley'. The barrel is half again the legnth of your Marlin. Anyway it will give you a starting point.