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Loads for a .45-70 BPCR (Read 1927 times)
33jayman
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Loads for a .45-70 BPCR
Jun 2nd, 2013 at 7:37pm
 
Looking for some light hand loads for a Browning BPCR in .45-70. I am not looking for black powder loads I need some smokeless.

I will be only shooting 200 yards at the most for CAS side matches. We shoot for speed and accuracy, we don't use black powder and I have to be able to get the rounds off quick and accurately.

Oh, this is not my first post here. I have been a member for some time. I couldn't use my old name so I re-registered.

Thanks for any help you might have,


Jay
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craigster
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Re: Loads for a .45-70 BPCR
Reply #1 - Jun 3rd, 2013 at 10:06am
 
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gunlaker
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Re: Loads for a .45-70 BPCR
Reply #2 - Jun 3rd, 2013 at 11:36am
 
I rarely shoot smokeless out of my .45-70's, but when I do it's usually with SR-4759.   25gr and a 405gr cast bullet will hold up reasonably well at 200 yards and have tolerable recoil.

Chris.
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creedmoormatch
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Re: Loads for a .45-70 BPCR
Reply #3 - Jun 3rd, 2013 at 11:44am
 

  33 Jay-Man

  Give a look/see to the Trail Boss loading data and formula;

70 % of the usable case volume, etc. etc.  You'll need to read it yourself at their web site.

You'll need to also watch out for those guys with the H & R Buffalo rifles,  why,.  .  .  .  . those are shooting machines.

C.M.M.
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boats
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Re: Loads for a .45-70 BPCR
Reply #4 - Jun 3rd, 2013 at 3:36pm
 
We get a lot of cross over shooters from Cowboy Action at our Club Single shot matches. Most use Trail Boss, One problem they have is running out of sight adjustment at 200 yards.  Pretty obvious when one of the trail boss loads takes off, takes forever to hit our 200 Yard Ram Target. High trajectory marginal accuracy is what I see, may be the powder may be the rifles. Might be the shooters, used to fast and short.

Times I have loaded light 45/70's for short range always used a 350 gr bullet intended for Lever Actions. IMR 4759 if looking for accuracy and less than 200 yard work. Unique same velocity and ranges but have to watch out for double charges loading. Weak action I avoid pistol powders if possible.

Big problem is recoil, manage it with a light bullet, Light bullet needs powder that burns well less than full case not a lot of bullet resistance on ignition.  4759 Unique Trail Boss take your pick

Boats
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gunlaker
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lower mainland, British Columbia, Canada
Re: Loads for a .45-70 BPCR
Reply #5 - Jun 3rd, 2013 at 6:59pm
 
I tried Trail Boss at 200m once but had such high vertical spread that I stopped.  I think something like 16" Smiley.   I guess it seems that someone has figured it out though.

I usually save the stuff for introducing new shooters to single shots and black powder.  A few shots of Trail Boss to get used to the rifle and trigger before moving on to heavier recoiling loads with black powder.

Maybe I'll play with it again one day and see if I can get a load with a low SD. 

Chris.
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gunlaker
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lower mainland, British Columbia, Canada
Re: Loads for a .45-70 BPCR
Reply #6 - Jun 3rd, 2013 at 7:04pm
 
I remember bringing a new shooter to the range a few years ago.  I brought a Ruger #1 in .45-70 and a bunch of trail boss loaded with 405gr bullets.  I was watching the bullet flying though the air with a pair of binoculars. I could see it hit the paper at 100m, then bounce off the ground shortly afterward and then bounce into the 200m berm.  The hold over from 100m to 200m was quite a few feet.  I believe that those loads were doing maybe 900fps Smiley.

Chris.
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majorfs45
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Stillwater, OK, USA
Re: Loads for a .45-70 BPCR
Reply #7 - Jun 3rd, 2013 at 8:29pm
 
Give 3031 a try with 34 grains with a 405 bullet or Unique powder with 10 grains.  Should get in the neighborhood or 1138 to1048 FPS. Both of these are listed to be safe in Trap door rifles in the old Lyman 44th addition of the reloading Handbook.  Shot a lot of rounds with the 3031 load in my sharps.
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Bent_Ramrod
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Re: Loads for a .45-70 BPCR
Reply #8 - Jun 3rd, 2013 at 8:41pm
 
My standard smokeless light load was 13 gr of Unique behind the Ideal 457124. It just cracks 1000 ft/sec and it's pretty accurate.
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33jayman
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Re: Loads for a .45-70 BPCR
Reply #9 - Jun 4th, 2013 at 5:19pm
 
Thanks for the replies guys! I am wondering if I should look at gas checked bullets? I can use them legally for the sport and would think they might offer an advantage but I am not sure as I have no experience loading them. What do you guys think of them for my purpose?

Jay
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screwloosetc
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Re: Loads for a .45-70 BPCR
Reply #10 - Jun 4th, 2013 at 5:46pm
 
Jay
You might want to try the RCBS 45-325 in front of 21 gr. 2400.There is no need foe a GC if bullet is hard enough with this load. It has worked well in all of my 45/70s.
Tom
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ireload2
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Re: Loads for a .45-70 BPCR
Reply #11 - Jun 6th, 2013 at 3:10pm
 
Jay
I also use SR4759 and have for about 30 years.  I shoot 22 to 25 grains behind a 512 grain Government styled bullet. It groups as well as I can hold in 3 different rifles - about 1.25" at 100 yards. Some groups smaller and some larger. These are groups shot with the factory sights.  There is some recoil with this weight bullet and it is traveling right at 1200 fps.
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33jayman
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Re: Loads for a .45-70 BPCR
Reply #12 - Jun 6th, 2013 at 7:28pm
 
Thanks again! Wow there is a lot of help here. It is pretty awsome.

As I learn more, I have more questions. Do you guys know if I should try .458 or .459 bullets with this Badger barreled rifle?

I ask because my Marlin .45-70 needs .459 diameter bullets to shoot worth beans with .458s.

You guys have been very helpful.  Smiley

Jay
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boats
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Re: Loads for a .45-70 BPCR
Reply #13 - Jun 6th, 2013 at 10:14pm
 
Smokless go over bore diameter 001 or 002,  Black powder if soft they will bump up to bore size, smokeless they won't. I have shot .459's and 460's in Marlin Levers and Trapdoors with success. Smaller never worked as well.

If it will chamber & lead is not too hard it's not too big.  Might slug that barrel see what it is.

Boats
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33jayman
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Re: Loads for a .45-70 BPCR
Reply #14 - Jun 7th, 2013 at 6:09am
 
boats wrote on Jun 6th, 2013 at 10:14pm:
Smokless go over bore diameter 001 or 002, Black powder if soft they will bump up to bore size, smokeless they won't. I have shot .459's and 460's in Marlin Levers and Trapdoors with success. Smaller never worked as well.

If it will chamber & lead is not too hard it's not too big. Might slug that barrel see what it is.

Boats


Sounds good. Thanks!
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