Firearm & Gun Forum - FireArmsTalk.com > Gear & Accessories > Ammunition & Reloading > .45-70 and Unique, how hot can I load it?

Reply
 
LinkBack Thread Tools Display Modes
Old 08-16-2011, 03:09 PM   #11
Feedback Score: 0 reviews
 
Join Date: Feb 2009
Posts: 659
Liked 2 Times on 2 Posts

Default

Aah that would be perfect! I really just want to see what the range is and, specifically, the pressures. Thank you, if you are able to do it!

__________________
Lindenwood is offline  
 
Reply With Quote
Old 08-17-2011, 01:31 AM   #12
Feedback Score: 0 reviews
 
quigleysharps4570's Avatar
 
Join Date: Sep 2010
Location: South Central,Kansas
Posts: 139
Default

Alright then...when I get in from work in the morning I'll see what I can do.

__________________
quigleysharps4570 is offline  
 
Reply With Quote
Old 08-17-2011, 02:07 PM   #13
Feedback Score: 0 reviews
 
quigleysharps4570's Avatar
 
Join Date: Sep 2010
Location: South Central,Kansas
Posts: 139
Default

Was wrong about the data for a Springfield action...Unique wasn't in it. But here's the data with the lever gun and Ruger actions. Hope it helps. BTW...there is more data for the Ruger with bigger bullets too.



__________________
quigleysharps4570 is offline  
 
Reply With Quote
Old 08-17-2011, 04:38 PM   #14
Feedback Score: 0 reviews
 
Join Date: Feb 2009
Posts: 659
Liked 2 Times on 2 Posts

Default

Thank you!

__________________
Lindenwood is offline  
 
Reply With Quote
Old 08-20-2011, 01:29 PM   #15
Feedback Score: 0 reviews
 
culdee's Avatar
 
Join Date: Nov 2010
Location: western,NY
Posts: 293
Liked 27 Times on 22 Posts
Likes Given: 10

Default safety first

spend a few bucks and buy the (a) correct powder for the cartridge. You'll get better performance and also be a lot safer. I always try to buy a powder that will serve in a lot of calibers unless I want a specific load for extreme accuracy. Varget is good in many rifle loads. Pistol powders in large capacity rifle cases are real unstable pressure wise IMHO.

PS: I looked at the above data and do not overlook the fact that the Unique loads call for a dacron fiber wad to hold the powder back against the primer.

__________________

"If there must be trouble, let it be in my day, that my child may have peace." - Thomas Paine
Vietnam Vet 1968 MCB 53 Danang


Last edited by culdee; 08-20-2011 at 02:32 PM. Reason: added PS
culdee is offline  
 
Reply With Quote
Old 08-21-2011, 10:02 PM   #16
Feedback Score: 0 reviews
 
Join Date: Aug 2011
Location: nowhere,that other state
Posts: 944
Liked 319 Times on 197 Posts
Likes Given: 399

Default

I would caution you against using a loading manual from the 1970's.

The powders in use today are different forumlations than the ones made 40+ years ago.

__________________
gunnut07 is offline  
 
Reply With Quote
Old 09-04-2011, 03:25 PM   #17
Feedback Score: 0 reviews
 
Join Date: Sep 2007
Posts: 192
Default

The OP never mentioned whether he was using cast or jacketed bullets. Unique is absolutely acceptable for cast as shown by the previous posted tables. Use it myself in a 45/70 with cast. For reference check out an article by Ed Harris concerning what he calls "the load". He uses Red Dot powder in rifle loadings, both jacketed and cast. There is precedence for using these "non-rifle" powders in rifles.

__________________
Dcomf is offline  
 
Reply With Quote
Old 09-06-2011, 04:50 AM   #18
Feedback Score: 0 reviews
 
Join Date: Dec 2010
Location: Myton,Utah
Posts: 3
Default

I use Unique to load .45-70 rounds for my Springfield Trapdoor. I use 13 grains behind a 405 grn. lead cast slug. The recoil is extremely light, almost non existant and I have never had any difficulty with any hangfires due to displacement of a small omount of powder in such a large case. I also use Trailboss powder for the loads for the same rifle, not sure of the grns on that one have to look up my load data and it's not here with me right now. I read some time back an article about using fast burning powders in large rifle cases to make up plinking loads. The fact that it is easy to overcharge or double charge a case is true, that small amount of powder in a large case can easly lead to such a problem and one has to be very careful about this. When I load these light loads I pour the powder into the case and then move the case to a completely different load block so it's out of the way of loading the other empty cases.

__________________
vulture is offline  
 
Reply With Quote
Old 11-18-2011, 09:37 PM   #19
Feedback Score: 0 reviews
 
quigleysharps4570's Avatar
 
Join Date: Sep 2010
Location: South Central,Kansas
Posts: 139
Default

Update on this Lindenwood?

__________________
quigleysharps4570 is offline  
 
Reply With Quote
Old 11-21-2011, 04:20 AM   #20
Feedback Score: 0 reviews
 
Join Date: Feb 2009
Posts: 659
Liked 2 Times on 2 Posts

Default

Never got a .45-70, but I did get a .308.

15gr of Unique and it shoots wonderfully. I know lots of guys over on Silencertalk run ~6-8gr for subsonic loads, but I didn't have any need for that. Plus, 15gr fills about 55% of the case so I liked not having to worry about any double charges.

17.5gr shot just about as well.

20gr started to show sights of high pressure, but nothing excessive. it fills about 80% of the case, and is almost exactly half the density of my standard rifle powder, H335. Primers weren't terribly flat (about the same as factory hunting loads), but extraction was noticably sticker (though the cases weren't as clean is I could have gotten them). I didn't get to chrono it, but I estimate 2100fps out of my short (16.4") barrel with this load and a 147gr bullet.

I've read that you can do 25gr in a .30-06 case, but it will be at the absolute limit (about 60k PSI), and obviously one should work up to that. That should give about 2400fps with a 150gr bullet, or about 2700fps with a 110.

In any case, given .45-70 has about 40% more case capacity than the .308, it should be able to take at LEAST as much powder. In fact, I think a very safe general-purpose Unique load is to find the volume that will just overflow the case, and half that for a Unique load (with no heavier than middle-weight bullets). This is about 15gr with a .308, probably 16-17gr with a .30-06, and right about 20gr with a .45-70 case.

And btw, if I'm not mistaken, Unique was originally designed for reduced rifle loads.

__________________

Last edited by Lindenwood; 11-21-2011 at 04:23 AM.
Lindenwood is offline  
 
Reply With Quote
Reply

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Firearms Forum Replies Last Post
Unique pistols NGIB General Handgun Discussion 50 07-07-2013 05:52 PM
Unique, 9MM, & Compressed Load? Richz99 Ammunition & Reloading 1 07-04-2011 09:19 AM
french Unique parts notjustsomeone Semi-Auto Handguns 0 06-21-2011 02:05 AM
Unique Alpine TPG-1 ReignofTroy General Rifle Discussion 1 08-30-2010 04:26 PM
The Unique Revolver Bob Wright Revolver Handguns 0 03-30-2009 03:00 PM