.45-70 pistol Mag. reserach

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Roon dog

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Topic: .45-70 pistol Mag. reserach
Posted: 22 July 2006 at 05:15

Anyone have a good load for this pistol? Its a 7-1/2 inch.

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Posted: 22 July 2006 at 05:57

Roon;

Hornady 6th edition has published loads for the .45-70 in a Thompson Contender. I do not see a pistol in your initial post. However, since you state it's got a 7.5" barrel, I'm going to presume that it's a BFR or one of the clones.

I'd reduce the T/C loads by 30% and most assuredly not try to match the Hornady numbers for the T/C application. In other words, a 300 grain bullet & 1100 fps muzzle would be just fine as a useful load that your gun, and hand, can stand.

Since Hornady's information was developed in a 16" barrel, their suggested powders probably aren't going to be the best for your application. Therefore, look to the larger volume quicker powders for best performance. That's a big case to fill & not much barrel to burn it all in. Recently at least one powder manufacturer has brought out a specific high volume fast burning powder specifically for Cowboy Action Shooting applications. There may even be some load data for you on the powder maker's site. A caution though, I find most powder maker's data to be enthusiastic. Start low, work up carefully. You do have a chrono, don't you?

900F

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Posted: 22 July 2006 at 06:00

Hogdgen lists a 300 grain JHP with 55.0 grains of H4198 as a very hot load - I use it in my T/C Contender & get 2,085 fps. This is a very hot load & the recoil is very, very strong. You may want to start off with a much lighter load and should in fact check to see if it is OK for a revolver. It's listed in their 45/70 pistol section, but was tested on a T/C Contender.

I also have a Marlin 1895 45/70 and the above load is listed in the 1895 specific section of the reloading manual. 45/70 reloading data generally come in 3 sections - Trapdoor, Marlin & Ruger#1/Siamese Mauser, lowest pressure to highest. You're most likely going to be in that grey area between Trapdoor @ 17K cup & Marlin @ 28 cup.

Edited by dfletcher

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Posted: 05 August 2006 at 18:32

Thank you for your input, I have been shooting hornady 350gr bullet

Recoil is fine and no high pressure on the primer or head.

Have not had the money for a chono yet.

With this load my grouping is not good at all.

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Posted: 06 August 2006 at 06:23

Roon,

Just to amplify what others have said. The T/C loads are probably NOT a good place to start. The Contender may very well be stronger than the gun you have (Revolver ?).

Unlike a rifle which is usually many time stronger than the brass case, examining the case in a pistol cartridge, especially may not be the best indicator of safe loads.

I don't know what you use for the gun is? But I'd start with loads in the manual that duplicate factory loads (maybe just go with cast bullets if it was me.)

Factory duplicate loads were surely within the pressure standards of the designer/manufacturer of your gun. that would be the starting point. Might be the stopping point. Sorry to hear you don't have a chronograph. With the 7 inch barrel and all that case capacity in the 45-70, I'd be interested how much increase if any over a 45 Colt max load?

BEAR

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Posted: 06 August 2006 at 12:21

The pistol is a Mag Reserch BFR. Hornady fifth edition show in the contender 16" IMR 4198 starting with 33.9grs and 1350fps with a 350gr RN. That is where i started. I am at 35grs. now. still no high pressure signs. Recoil still not bad more push then anything. Still wish I had a chronograph it would help. Maybe i can find a good used one for not much hope hope. ALSO how do i tell high pressure in a revolver? I do not know if this helps the cases still push out easy, No stuck cases in the cylinder.

Edited by Roon dog

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
Roon dog Members Profile Send Private Message Find Members Posts Add to Buddy List .22 LongRifle Joined: 29 April 2006 Location: United States Status: Offline Points: 6	Post Options Post Reply Quote Roon dog Report Post Thanks(0) Quote Reply Topic: .45-70 pistol Mag. reserach Posted: 22 July 2006 at 05:15
	Anyone have a good load for this pistol? Its a 7-1/2 inch.

CB900F Members Profile Send Private Message Find Members Posts Add to Buddy List Administrator Honor, Integrity Joined: 10 June 2003 Location: Eritrea Status: Offline Points: 8857	Post Options Post Reply Quote CB900F Report Post Thanks(0) Quote Reply Posted: 22 July 2006 at 05:57
	Roon; Hornady 6th edition has published loads for the .45-70 in a Thompson Contender. I do not see a pistol in your initial post. However, since you state it's got a 7.5" barrel, I'm going to presume that it's a BFR or one of the clones. I'd reduce the T/C loads by 30% and most assuredly not try to match the Hornady numbers for the T/C application. In other words, a 300 grain bullet & 1100 fps muzzle would be just fine as a useful load that your gun, and hand, can stand. Since Hornady's information was developed in a 16" barrel, their suggested powders probably aren't going to be the best for your application. Therefore, look to the larger volume quicker powders for best performance. That's a big case to fill & not much barrel to burn it all in. Recently at least one powder manufacturer has brought out a specific high volume fast burning powder specifically for Cowboy Action Shooting applications. There may even be some load data for you on the powder maker's site. A caution though, I find most powder maker's data to be enthusiastic. Start low, work up carefully. You do have a chrono, don't you? 900F
	Birth certificate!? He don't need no steenkink birth certificate!!

dfletcher Members Profile Send Private Message Find Members Posts Add to Buddy List .243 Winchester Joined: 13 December 2005 Location: United States Status: Offline Points: 216	Post Options Post Reply Quote dfletcher Report Post Thanks(0) Quote Reply Posted: 22 July 2006 at 06:00
	Hogdgen lists a 300 grain JHP with 55.0 grains of H4198 as a very hot load - I use it in my T/C Contender & get 2,085 fps. This is a very hot load & the recoil is very, very strong. You may want to start off with a much lighter load and should in fact check to see if it is OK for a revolver. It's listed in their 45/70 pistol section, but was tested on a T/C Contender. I also have a Marlin 1895 45/70 and the above load is listed in the 1895 specific section of the reloading manual. 45/70 reloading data generally come in 3 sections - Trapdoor, Marlin & Ruger#1/Siamese Mauser, lowest pressure to highest. You're most likely going to be in that grey area between Trapdoor @ 17K cup & Marlin @ 28 cup. Edited by dfletcher

Roon dog Members Profile Send Private Message Find Members Posts Add to Buddy List .22 LongRifle Joined: 29 April 2006 Location: United States Status: Offline Points: 6	Post Options Post Reply Quote Roon dog Report Post Thanks(0) Quote Reply Posted: 05 August 2006 at 18:32
	Thank you for your input, I have been shooting hornady 350gr bullet Recoil is fine and no high pressure on the primer or head. Have not had the money for a chono yet. With this load my grouping is not good at all.

Guests Members Profile Send Private Message Find Members Posts Add to Buddy List Guest	Post Options Post Reply Quote Guests Thanks(0) Quote Reply Posted: 06 August 2006 at 06:23
	Roon, Just to amplify what others have said. The T/C loads are probably NOT a good place to start. The Contender may very well be stronger than the gun you have (Revolver ?). Unlike a rifle which is usually many time stronger than the brass case, examining the case in a pistol cartridge, especially may not be the best indicator of safe loads. I don't know what you use for the gun is? But I'd start with loads in the manual that duplicate factory loads (maybe just go with cast bullets if it was me.) Factory duplicate loads were surely within the pressure standards of the designer/manufacturer of your gun. that would be the starting point. Might be the stopping point. Sorry to hear you don't have a chronograph. With the 7 inch barrel and all that case capacity in the 45-70, I'd be interested how much increase if any over a 45 Colt max load? BEAR

Roon dog Members Profile Send Private Message Find Members Posts Add to Buddy List .22 LongRifle Joined: 29 April 2006 Location: United States Status: Offline Points: 6	Post Options Post Reply Quote Roon dog Report Post Thanks(0) Quote Reply Posted: 06 August 2006 at 12:21
	The pistol is a Mag Reserch BFR. Hornady fifth edition show in the contender 16" IMR 4198 starting with 33.9grs and 1350fps with a 350gr RN. That is where i started. I am at 35grs. now. still no high pressure signs. Recoil still not bad more push then anything. Still wish I had a chronograph it would help. Maybe i can find a good used one for not much hope hope. ALSO how do i tell high pressure in a revolver? I do not know if this helps the cases still push out easy, No stuck cases in the cylinder. Edited by Roon dog