After getting the Guide Gun I think I am going to start loading for the 45/70. I have quite a few powders on hand but a store in town has 5lbs of SR 4759 and I hear that it is good for lower power loads? I was thinking about 405gr cast with deer and hogs on the menu along with the always dangerous and unpredictable water filled milk jug. I figure anything in the 1500-1600fps range would be plenty for the creatures I am after, this is doable with SR 47559, yes? Also, do I need some dacron filler or will 4759 fill the case pretty good, I have never used it before? Seems 28-30grs is around the right charge?
Thanks for the help
30 grains is a bit hot even in the Marlin, my data shows 29.5 is maximum with the 405, and you might want to back off to around 26.0 to start, even for those tenacious little Zombie Water Jugs.
I see no need for dacron fillers.
"There is a fine line between a hobby and Mental Illness". Dave Barry
Team 1894 #4
Team 45-70 #847
Team 375 #27
Thanks for the info, my Speer #12 manual shows 30.0grs of SR4759 as a max for their 400gr Jacketed for Marlins. From some more searching 28-28.5grs seems to be a real good load. The water jugs are the main concern, everyone knows how crazy they can get when wounded!
In the June 2007 issue of "Handloader" Mike Venturino has an article titled "All-Purpose 45-70 Loads".
The article focus on black powder, and in fact he only discusses 3 smokeless powders for the 45-70,
which are IMR3031 for jacketed bullets and SR4759 and XMR5744 for cast. Venturino writes that when he
is using smokless loads in his lever guns he most often uses the cast bullets with SR4759 or XMR5744.
Using either the RCBS 45-405-FN gas checked, weighing as he casts it at 410 grains, or the Lyman 457193
plain base flatnose at 420 grains, he uses either 25.0 grains of SR4759 or 28.0 grains of XMR5744. According to his data the velocities then run just under 1,400 fps. These loads he states can used with the custom cast 400 gr.
plain based bullets that one may order. You will find that these recommendations are in line with what is in the manuals. In checking in the manuals you will see that the 25 gr charge of SR4759 can be increased a few grains, but I suspect
there may be little profit in doing so. I myself have purchased some SR4759 to work up loads of more moderate velocity. 35rem. has pointed out on this forum that my standard powder for the 45-70, IMR3031,
works best at higher pressures and may not be the best for the slower loads. Based on the experience of others, I think that the loads Venturino suggests with cast bullets using SR4759 would be an effective hunting load for deer, hogs, and black bear and even larger game, though for the big bears we may want
to trust our hides to one of Randy Garrets offerings. Anyway, try to find the Venturino article if you can; the more I shoot the more I see the wisdom in his recommendations. I forgot to mention, but Venturino states there is no need of a filler with SR4759. If Venturino and 35rem like SR4759 for cast loads, then it has got to be good!. Also, in the latest loading manual from Barnes, they list SR4759 for use with their copper
250 gr and 300 gr. bullets.
Thanks for the info RKTucker.
I found a box of 350gr Hornady RN and I loaded them up with a Lee Loader I got a few years ago. 45grs Rl7, 350gr Hornday, CCI200, shooting from a seated position at 45yds .89" group with factory buckhorns.
How does a Lee Loader do with cast bullets and how many loadings could I get before I needed to FL size? I don't have a set of 45/70 dies yet, but if I can get by with the Lee Loader, I actually kind of enjoy it, very old school. I was just worried about not being able to bell the case mouth and shave some lead.