45-70 BFR 7.5" accuracy loads

[44man]

Wish I could buy more. The 30-30 would thrive with 4759 so how can we get it back?

[mcal762]

I think at this point the manufactures are working at max capacity and are still having a tough time keeping up with the demand. the companies have looked at the least used products and discontinued them and moved on to their top sellers for max production...

it seems like IMR 4198 and RL 7 have been good powders for this pistol.. actually Blue Dot has been the most efficient powder so far producing the highest velocity with the least amount of powder and producing good accuracy... I still have a lot of testing to do with BD and might go back and do some more testing with 2400 with pistol primers and Dacron to see if there is a combo that works well.

[Ramjet-SS]

Do not forget Unique or Universal for low to medium velocity loads with filler.

[mcal762]

the last time that I was at the store I didn't see those powders in stock...

can you use a Dacron filler with any type of powder.. the 4198 load that I use there is a lot of air space in the case would it be ok to put some filler in there?

thanks..

[44man]

the last time that I was at the store I didn't see those powders in stock...

can you use a Dacron filler with any type of powder.. the 4198 load that I use there is a lot of air space in the case would it be ok to put some filler in there?

thanks..

Yes, you can. Just a small tuft to touch the powder and high enough so the boolit pushes it down when seated. I buy garnetted fiberfill from Jo-Anne fabrics, it does not have all the funny strands.
I don't like the bat stuff, not even strands.
Garnetted is so easy to get in with a pencil without long, thick strands to fool with.

[mcal762]

The reason I ask is i had a 90+fps spread on one Of the 4198 loads... There was amid of air space in the case..

[44MAG#1]

I would use at least a 1.5 grain tuft. Then I would try the load with LR primes and LP primers.
That is the trouble with low loading densities. Try chronoing 3 with the powder in the front of the case and 3 with the powder to the rear and see what you get. These that believe some powders are not position sensitive either have never tried the above test or they just parrot some drivel they have heard from some "expert" they have heard spout their knowledge.
I have tests with some real fast so called non position sensitive powders in the 45 Colt that would surprise you.
Just try the front and back tests just for the enlightement of it and get back to us.

[mcal762]

That is what I was thinking... Gonna try the Dacron trick with the 4198 and do the test to see if the velocity is more consistent.

[44man]

4198 gave me a pressure excursion and stuck a few cases with my cast. It jumped to 1800 fps.
I did not get that with the Hornady bullet.
It could have been position. Either that or the boolit moved before the powder went off.

[Ramjet-SS]

I have used the 4198 in my 458 SOCOM with good results but have not had the same luck in my 45-70 the case capacity is the main difference and of course slight neck on the SOCOM. When I think of the 45-70 in a handgun I think pistol powder or faster burning powder would give you good performance but as several have said you will need filler. Now be sure add the weight of the filler and adjust the powder charge accordingly like always start lower work your way up. I will,post a pic of that 315 grain WFN CG I cast (Lyman #2 blend) for the 457 diameter guns. I use this in my SOCOM, 45-70 Encore rifle, 457 GNR. Bens TL Lube formula.

[rhouser]

Trail Boss replaced thr SR4759 for function. I hated it at first, now I am finding I use it quite a bit. I too have always used SR4759 for Lower Velocity 45-70 in my rifles and do like it a lot. I have never tried Trail Boss in my 45-70's, but, suspect it might be worth giving a try in the BFR. I shoot quite a bit of it in my Casull and find it to be adequately accurate and VERY predictable.

Just my 2 cents
rch

[44man]

Might be worth a try but I can't find it. I don't want to send for any and pay hazmat for a trial amount.
Just remember, the rifle is different. The revolver is so far away you can't come close.

[44MAG#1]

Try 47 grains of RL7 with the 405 grains bullet and see what kind of accuracy you get. You can always work the load a little to get more accuracy.
I use LR primers with it. Not saying it will shoot lights out on the first rodeo but you can work up and down some on it.
Another powder that is good is H322 with LR primers.

[mcal762]

What velocity do you get of 47 gr RL7? How's the recoil on that load!??

[44MAG#1]

Velocity with that load runs 1460 ish or so. Lyman list 23600 CUP with 46 and the Lyman 405 gr bullet.

[mcal762]

Found a old shooting times article from 1999 that shows a Hornady 300gr jhp with 42.0 gr of H110..... That's interesting.... Any thoughts... Not really sure about that load that powder can't be reduced but it did work in a 45-70 and produced 3"@50 yds...velocity 1548 fps...

[mcal762]

That's is what I was thinking start with 40gr, I have a can of W296 which to my understanding is the same as H110.. I know it shoots awesome in my 44 mag with a 240gr XTP... Might give this a try....

[44man]

Kind of scares me! Any reduction over a proven load can be bad.
I have never seen an H110 or 296 load for the 45-70. You are going to have airspace no matter what.
Not going in my gun. Those are powders I will not fool with.

[Ramjet-SS]

Yea I agree with 44 man I did a pile of research on that powder in the 45-70 and cannot find one thing stay away from it there are way better choices.

Here are some powders with data listed.

H4198
IMR 4198
H335
H332
IMR8208
IMR3031
IMR4064
IMR4895
AA2015
RL7
RL10
AA2230
X-Terminator
AA5744
Unique
630
2400
SR4759

[mcal762]

Test loads for today:

405 gr (badman) imr 4198 38.0 gr cci 200 w/dacron
1365 fps 1 1/4" @ 50 yds

300 gr cast imr 4198 38.0 gr cci 200 w/dacron 1" @ 50 yds

retested for velocity RL7 35.5 gr 405 cast cci 200 w/Dacron
average was 1212fps 1 1/2" @ 50yds

cheers...