i been playin with some duplex loads and i gotta say that ill prolly get hung here for mentioning them but here goes anyway for those of you that practice or wonder about this seemingly forbotten loading.
shooting was done with a winchester hiwall hunter model with the 28 inch barrel for the first loads. the second loads were fired in my ruger #1 with its longer throat.
these loads consist of 10% smokless...[imr 3031] and the rest with the smokless grains subtracted 1 to 1 from the total black powder grains........example was the first load being 50 grains total with 5 of smokless and 45 black to total the origanal 50 grains desired.
so the first load was 5 grains imr 3031 with 45 grains goex 2f compressed .200 inch and wad was a 1/8th felt overpowder primed with a cci 200 large rifle and loaded in a sized remington case. the boolit was a bacco 45-500 slick boolit weighing in at 500ish grains with a flat base at diameter of .444 inch...wrapped in bacco's 9 pound onion skin two wraps meassuring in at .4515 inch. then the case opened with the only expander i have which is .455 inch... the boolit was tightened in the case with my rcbs full length size die with the de-primer pin/stem removed.
this load shot very clean and the debri out front told of complete shredding rite outta the muzzle. no rings left in the barrel and the duplex did its thing as i fired 5 shots without wiping or any lube at all. recoil was lite so the next load was a bit stiffer.
next i tryed 7 grains imr 3031 behind 63 grains goex 2f powders. all the same combanations as above except that the boolits had to be loaded further outta the case for the extra powders. this is the primary reasson for switching to the ruger for this load....first thing about this load is that it feels like a very stiff load thru the ruger. a small puff of air to remove the smoke revealed a very clean bore...almost as clean as a straight smokless load and with the acompanyed puff of paper bits in the air with the shot. this feels like a hunting load thru this ruger and i definetly will re-try it over the screens to see what velocity is.
all the cleaning i did with either of these loads consisted of 2 spit infested patches run back n forth twice for each and then following these with a dry patch to remove my spittle from an otherwise perfect bore then followed with an oily patch to preserve for the rack again.
all in all i have been having fun with this paper patching and im also doing it with smokless as well only patching up closer to the groove diameter. i like those as i can load em back without doing anything to the cases but slightly flair the mouth and reload them to shoot again with a rcbs hollow base slick boolit.
so there is my sordid story and my fun factor is rite up there. i think developing a hunting load will not be that hard with all the reading i been doing both here and other forums as well as the three books i bought for research into both the duplexing and paper patching.
hope i didnt ruffle too many feathers with this blasphemous uttering but there it is all the same