in2anity wrote:bladeracer wrote:Shouldn't need checks if they're coated.
So tell me how fast have you successfully driven coated, unchecked lead blade? (without stabilization issues)
Off the top of my head probably not much more than about 1300fps I'd guess. Why would stabilization become an issue at high velocities?
I only started powdercoating early last year so mainly lower-velocity stuff, .38, .44Mag and Trailboss loads in other rifles. I don't personally have any interest in pushing lead fast, I cast for lower-velocities. Recently I've been playing with the 6.5mm milsurps and the 170gn Cruise Missile mould, but I'm only working around the 1300fps region so far, unchecked.
I did send some 161gn uncoated checked hardcast (32% tin) at 2500fps in 8x57mm just to see what it would do, it went through 8mm steel plate at 50m
It leaded the bore horrendously though.
I have plenty of cast stuff though so if you want I could try punching some hard if you like and see how they get on? I've been meaning to do some more cast work with the .223 and .243. Could be fun shooting a bunch of .243 cast down range at increasing velocities. I don't think I have any already coated but I can do a batch pretty quickly. I have a pile of 8mm powder-coated already but they're also checked.
Actually, it just occurred to me that my .223 and .243 are tight-twist rates which will be a limiting factor. And my milsurps are all pretty tight too, I think the slowest is the '03-A3 at 10"-twist. I believe the Win94 .30-30 should be a 12"-twist but haven't checked it. I'm thinking my best bet to find max velocity will be the .44 Magnum.