T7 45-70

cataway · 10-09-2011, 11:05 AM

I've workup a load thats rather accurate in my encore yet some times the cases are splitting open . 53gr (by weight) T7,300gr bullet
I've tired more powder and no splitting not near as accurate either.

tried a wad but not accurate.

thoughts ?

cayugad · 10-09-2011, 11:08 AM

No idea why it would split the cases. I never got into that kind of black powder shooting. But you sure have peaked my interest. Tell me more. What kind of rifle do you shoot? Also how far were you shooting? Sorry I can't help you, but again, I'd love to see some of the targets and the rifle you shoot.

Muley Hunter · 10-09-2011, 11:13 AM

You don't have any air space in the case do you? How much powder in volume is that?

cataway · 10-09-2011, 11:40 AM

air space is one of my thoughts which is why tired a wad thinking it would take up the space but lost the accuracy .

it does not do it every time just every now and then but its yet to do it with any thing more that 54gr of powder

winchester brass

josh...just josh · 10-09-2011, 12:10 PM

dont they sometimes use filler like cornmeal?

bronko22000 · 10-09-2011, 12:24 PM

Before you shoot any more - STOP and pull the bullets. You must fill the case with some type of filer prior to seating the bullet. I suspect you are creating too much pressure. That bullet is off the charge and is just as dangerous as if it was off the charge in the barrel. Do some research first before you load and fire anymore. I believe Youtube has a couple videos on loading BP cartridges.
Here is an excellent source of info: http://www.wahsatchdesperadoes.com/I...CR_Loading.pdf

HuntAway · 10-09-2011, 01:06 PM

I just measured 53.3 gr (weight) of T7.
Then I transfered that to a powder measure. I got 74 gr (volume).

I then transferred that to a 45-70 case.

I don't think air space is a problem because when I set a 405 gr bullet beside the case down to the crimp groove it would be a heavily compressed load.

So all that being said. I think you are useing too much powder. So I went to the Hodgdon site.

and found this data note;
http://www.hodgdon.com/loading.html

Then I went to the load data page. and found this;
http://www.hodgdon.com/PDF/muzzleloa...?CHECKBOX_1=on

Your answer is at the bottom of page 2 right hand column.

Their load data (Hodgdon's) tell's me, to tell you, to back off your load. Use a volume measure not a weight scale. Use the proper bullets.

You are playing with fire .

Good luck and play safe.

HA

cataway · 10-09-2011, 02:22 PM

i to tired 53 gr and then put it into a volume gage and cam up with some thing closer to 68 by volume.

i am going to do the cornmeal trick a wad just does not get it

HuntAway · 10-09-2011, 03:13 PM

Quote:

Originally Posted by cataway

i to tired 53 gr and then put it into a volume gage and cam up with some thing closer to 68 by volume.

i am going to do the cornmeal trick a wad just does not get it

Hodgdon's does not recommend fillers. If you're splitting cases it tells me one of two things. a. your brass is pooched. or b. your load is to heavy.

Hodgdon's recommended load is 60 gr by volume.

Are you useing a cast bullet or jacketed? Their load data is for cast.

HA

cataway · 10-10-2011, 02:20 PM

Quote:

Originally Posted by HuntAway

Hodgdon's does not recommend fillers. If you're splitting cases it tells me one of two things. a. your brass is pooched. or b. your load is to heavy.

Hodgdon's recommended load is 60 gr by volume.

Are you useing a cast bullet or jacketed? Their load data is for cast.

HA

my bullet of choise is Hornady #4500 300 gr HP

hodgdon's load that you refered to is a 405 cast lead