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Posted By: dogwater 45-70 load advice - 04/24/23
I have a shiloh Montana rough rider and I am a very experienced smokeless/modern loader. No experience with bp cartridge loading. I just made up some black loads.
I'm using 535 postell 459 and Swiss 1.5f I am seating to the front band, where the brass just covers the lube. I am compressing about 1/10 with a die and using a fiber wad. Powder is dropped thru a 24in drop tube.
According to my volume measure I am using 63 grains. Weight shows 61 grains. That's about all I can fit in unless I compress more.
Does that sound about right?
Posted By: Ranch13 Re: 45-70 load advice - 04/24/23
You'll need to fire them thru the rifle and let it and the target tell you whether or not its about right. That load might work well if the accuracy is there for sillhouette or midrange but the velocity might be a tad low to keep the bullet stable beyond that.
Pour the powder thru the funnel slowly it will settle more in the case than just dumping it.

Don't forget to use good fouling control between shots or you won't get much for accuracy.
Posted By: 1minute Re: 45-70 load advice - 04/25/23
Sounds as good as any other place to start. One might also sign into the Shiloh site.
Posted By: DigitalDan Re: 45-70 load advice - 04/25/23
What Ranch said.
Posted By: dogwater Re: 45-70 load advice - 04/25/23
Weather is better this week so I will get out and shoot and see how they do.
Posted By: dogwater Re: 45-70 load advice - 04/30/23
Shot my first black powder loads today. 3 touching at 50. About 2 inches at 100. I think my eyes are the limiting factor. I have mva sights on order, I hope they help. I was surprised, the 535 didn't kick as much as my 405 smokeless loads.
Posted By: Magnum_Bob Re: 45-70 load advice - 05/07/23
I think your on the right track with swiss 1.5 fg. Mb
Posted By: dogwater Re: 45-70 load advice - 05/16/23
68 yr Swiss compressed about .15. .74 3 shot group at 100
Posted By: Magnum_Bob Re: 45-70 load advice - 05/16/23
Pretty hard to beat that as long as it is repeatable on occaision.mb
Posted By: dogwater Re: 45-70 load advice - 05/17/23
Ya. I worry about my eyes more than anything else...
Posted By: Chuck_R Re: 45-70 load advice - 05/19/23
OP,

Years ago when I was heavily into BPCR matches I wrote an article on BP loading with the help of some guys on another forum. It ended up being printed in the Single Shot Exchange, so it was apparently "OK".

If you want, PM me with an Email address and I'll send you a copy.
Posted By: dogwater Re: 45-70 load advice - 05/19/23
Thanks, I'll take you up on that offer...
Posted By: nathanial Re: 45-70 load advice - 05/20/23
67.5 grains of Swiss 1.5
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