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Old 02-20-2010, 05:01 PM
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fredj338 fredj338 is offline
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Quote:
Originally Posted by Dragon88 View Post
Yup, what size are they and how fast are you trying to push them? Even a hard cast plain base is only good to about 1100fps or so, some more but depends on a lot of things. They may look nice but what alloy was used, what where they sized too and how good is the lube?
THis just isn't completely true. Depending on the fit of the bullet to the bore/cyl throats, you can drive a hard cast (BHN14+) to well over 1500fps w/ little to no leading.
Measure the cyl throats, a pin gage works best, they should match your bore diameter (slug it & measure that too) or only slightly over (Less than 0.001") for best accuracy w/ least leading. Shooting a hardcast, undersized bullet too slow can also cause leading as the hot gas blows by the base & flash plates the lead to the bore.
I have a RBH in 45colt that was just leading badly, especially the first 1-2" of the blbl. The cyl throat measured 0.450", the groove dia @ 0.451". I opend the throats all to 0.452" & not only did the leading go away, but accuracy was almost twice as good @ 25yds (from 3" to under 2").
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Last edited by fredj338; 02-20-2010 at 05:05 PM.
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