small cartridge Contender & rifle barrel length powders...

Magnum Wheel Man · February 10, 2009, 12:17 PM

we just finished 2 Contender barrels, one 10" & one 23" in 5.7 X 28, as well as a couple 17 caliber Hornets ( mine a K Hornet, my buddies an Akley Hornet ) also in 10" & 23"... we are also both loading for some other small cartridges, like 22 Hornet, 256 Win Mag, etc...

I'd think the powder properties would be similar between some of these smaller cartridges, case capacity for case capacity, bullet weight for bullet weight, barrel length for barrel length ??? most / all of the 5.7 data we've found has been with faster powders... we are both looking at expirimenting with some slightly slower powders...

curious if anyone is loading for these or similar smaller cartridges, & cares to share wht they are loading for, & using for components ???

unfortunately it's winter here in MN, & it's a perfect time of the year for reloading, but a less thn perfect time to test loads for pressure signs, before reloading too many rounds up... looking to share data as a place to start

darkgael · February 10, 2009, 12:54 PM

As an experiment, I loaded the 5.7X28 with IMR 4064 under a 55 grain FMJ. I don't have my load book here but the charge weight was about 8 grains. (you can't get enough into the case to be dangerous). Used small pistol primers. There were no overpressure indications on the primer, on extraction or on the diameter of the casehead.
The rounds functioned in the 5.7 pistol but were subsonic.
Pete

February 10, 2009, 12:17 PM	#1
Magnum Wheel Man Senior Member Join Date: July 26, 2006 Location: Southern Minnesota Posts: 9,333	small cartridge Contender & rifle barrel length powders... we just finished 2 Contender barrels, one 10" & one 23" in 5.7 X 28, as well as a couple 17 caliber Hornets ( mine a K Hornet, my buddies an Akley Hornet ) also in 10" & 23"... we are also both loading for some other small cartridges, like 22 Hornet, 256 Win Mag, etc... I'd think the powder properties would be similar between some of these smaller cartridges, case capacity for case capacity, bullet weight for bullet weight, barrel length for barrel length ??? most / all of the 5.7 data we've found has been with faster powders... we are both looking at expirimenting with some slightly slower powders... curious if anyone is loading for these or similar smaller cartridges, & cares to share wht they are loading for, & using for components ??? unfortunately it's winter here in MN, & it's a perfect time of the year for reloading, but a less thn perfect time to test loads for pressure signs, before reloading too many rounds up... looking to share data as a place to start __________________ In life you either make dust or eat dust...

February 10, 2009, 12:54 PM	#2
darkgael Senior Member Join Date: February 9, 2006 Location: Homes in Brooklyn, NY and in Pennsylvania. Posts: 5,473	rifle powders As an experiment, I loaded the 5.7X28 with IMR 4064 under a 55 grain FMJ. I don't have my load book here but the charge weight was about 8 grains. (you can't get enough into the case to be dangerous). Used small pistol primers. There were no overpressure indications on the primer, on extraction or on the diameter of the casehead. The rounds functioned in the 5.7 pistol but were subsonic. Pete __________________ “Auto racing, bull fighting, and mountain climbing are the only real sports ... all others are games.” Ernest Hemingway ... NRA Life Member