45-70 load for replica question

[blackpowdernut]

I'm loading for the 45-70 quigley and bought the correct manual from loadbooks and found the replica load using IMR 4198 which states 38.0 grains and produces 27,400 CUP. After I loaded these shells I re-checked in the Pendersoli book and found 25,000 as the top pressure. I also checked the IMR web site which of course gave the same load. Would you shoot these loads or pull the bullets and start over??

[PaulS]

blackpowdernut,
I would pull the bullets and start over. Always start at 10% below maximum unless the manual says not to reduce the listed load. If you start at a maximum load you are bound to find lots of loads that are over pressure in your gun even though they are listed as maximum in the manual.
I thought that Quigley used a 45-110.....

[hdj2520]

AA5744 may work well for you. Have a look at the Accurate Arms  manual.

[Redhawk1]

I have a Shiloh Sharps and only shoot black powder cartridges in it. Why not try BP? I have a lot of fun loading and shooting black powder in mine.

Quigley never shoot smokeless powder. LOL 

[glshop20]

AA5744 is very good.  I use it in an original Trapdoor Springfield45-70 and Reminton No.1 Rolling Block with good results.

[ron haralson]

I use 24 - 25gr 2400 with 425gr Saeco design and get very good accuracy. I'm shooting a Danish Rolling Block.

[jh45gun]

That load according to the Lyman book would be reaching into the One and Three range which is pretty stout I agree pull them and start over. I have a Origional smokeless powder Remington Roller and I contacted Steve Garbe about it and he told me that shooting loads into the lower half  of the lyman book for loads for the Marlin and Win 1886 would be safe for my gun. For a 400 grain bullet it says 32.3 which is a max load produces 25,400 cup. So I would stay below that.  You do not say which bullet you are shooting so hard to compare loadings I would get a lyman book or go to the library and copy the loadings for the 45/70. It has loadings for all three classes of the 45/70 so hard to go wrong if you follow the section your gun rated for.