Dialing in a C Sharps 1885 45-70 BPCR

[Snocat]

Good morning it's great to see input and direction form you guys .I tend to wonder off course ....oh shinny !! Lol
Everything I've learned to this point has been from reading what everyone's posted over the years. Thanks !!!!
So thought it only fair that I add something even if its just a car wreck you can't help but look . Something to help with cabin fever . I've posted all the the results maybe it's helpful to someone.
I'm taking you guys all the way! Including the whipping I'm going to get at the Ridgeway Match ...with pics of course ! I'm determined not have the excuse my rifle and load were not up for the task .

This rifle and both molds 530 PJ and 510 Baco has been sitting in the safe for 4 yrs. My Shiloh has proven 560 Brooks is a great bullet.
Kurt your spot on with being more focused. My plan was to give all the new bullet molds a try with the same components then tinker futher with loads that show promise.
I'm starting to see wind affects these rifles a lot ! Compared to 338 and 408 hot rods pushed over 3k. And it's been breezey .lol

I cut out every paper group and scribble what it was and keep a file on that rifle .l find after a few days your mind forgets what it wanted to see and the paper shows what really happened.
I've got a few 400 yd groups that are not to shabby if you look at vertical it was brezzy.

Things on the to do list this weekend.
Taking lumpys advise and other top shooters.
Take my best four slip fit loads and full length resize with neck tension hopfully with bullet T.I.R. run out .002
Also tinker with Olde 2 and different primers , try to get E.S . Closer to Swiss .

If ya have a theory speak up ! I will put it on paper for ya!!

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[Don McDowell]

In my rifles, using OE rem 9 1/2 primers, followed closely by br-2's yield the best results. OE seems to perk up beginning with a slight amount of compression, and can work all the way to just mashing the crap out of it. But there again this falls back to each rifles preference. (I also know of one undeniable "top" shooter, that compresses the crap out of his Swiss loads)

[Steve Anderson]

I don't see a bad group SnoCat. Those are impressive. In better conditions, few could out do any of your loads.

[Snocat]

Brown truck !
Just for comparison I'm going to water C.C. new Starline resized brass against slip fit full resized and slip fit .

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[Snocat]

I don't see a bad group SnoCat. Those are impressive. In better conditions, few could out do any of your loads.

Thanks Steve , it's fun tinkering and seeing results. Its also a nice break from the shop been getting equipment ready for the season. Just twisted a bolt off !! It's Friday time to resize some brass . Lol

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[Don McDowell]

On your slip fit , you may need a larger diameter bullet for optimal accuracy, depending on what your fired cases measure.

[Lumpy Grits]

For targets-Let me suggest standard paper plates.
Thicker paper, and better 'show' of the bullet hit without the tearing etc.
Buy them at Sams Club or Costco, and they are supper cheap.
Also-I suggest you tract the bullet hits on the target, for future reference.
Try a .45-90 F/L size die, for your .45-70 brass.
Gary

[Kurt]

Cat three and less then two inches vertical at 400 yards is very respectable. make sure you have the load information well guarded so you don't loose it for this powder lot number. Developing loads I look at the vertical and not to much at the horizontal. Horozontal spreads for me is not correcting for wind and at times fat fingering or changing cheek weld and grip. Your vertical groups look very good for 400 yards in anybody's book.

I don't use sizing dies except the very first time with a new batch of brass. I have chambers I drew up and I use my reamers but they are designed for a PP only that don't need sizing for my chambers. I do have factory chambered rifles that will handle a GG bullet and for these I use a .45 short taper crimp die to get the neck diameter for a GG bullet or a PP for that matter in factory chambers. I can get the proper neck tension I want from one thousand or more with out having to use a expander plug or bushing die that might make a out of round mouth. I made a tapered plug that will fit a .38 to .50 caliber that will just flair the case mouth enough I need to get a bullet started with out shaving lead off the shank when seating with neck tension then back off the taper crimp die to knock the flair down just enough so the slight flair still on the case mouth scrapes the chamber wall. I know the taper is concentric so the case is held straight in the chamber. This is just important as getting the bullet run out to a minimum. I did this shooting bench rest and I carry it through for the black powder matches.
Yes this involves a little more time getting a uniform case length so everything is the same when the case is run through the sizing and flaring stages. I want to shoot my best at a match and if all this work falls together then if I fail shooting well it's my fault not my load or rifle or my spotter.

[Lumpy Grits]

I would like to see how these same loads work in the heat of summer.
G.

[Snocat]

On your slip fit , you may need a larger diameter bullet for optimal accuracy, depending on what your fired cases measure.

All three molds drop .458 I shoot them as cast .Fired cases inside the case mouth are .456 .457