Cast bullet hardness

[Spartan1980]

Titegroup and bare lead bullets don't mix. That practice will get the EPA involved.

[revchuck38]

Titegroup and bare lead bullets don't mix. That practice will get the EPA involved.

I eventually figured that out. It often looked like I was shooting an 1860 Army rather than an S&W M67.

[mmc45414]

I just placed and order with rimrock

They look like a good source. Had been using Dardas but he retired.

[03RN]

I've used lasercast and Missouri. I like these the best. They seem to lead less and they're cheaper.

[Alpha Sierra]

Don't know if it's been mentioned before but polymer coated cast bullets make everything easier and cleaner by an order of magnitude. I no longer buy bare lead bullets.

[jtcarm]

Can you explain more on this? What's considered a good fit between bullet and grooves and between bullet and throat?

And does the degree of interference fit needed between the unfired bullet and the throat/grooves vary depending on the lead hardness and chamber pressure?

I think the ultimate goal is to have good solid bullet obturation.

Everything you ever wanted to know about cast boolits:

http://www.lasc.us/Fryxell_Book_Contents.htm

[jtcarm]

Sure! Working off memory here...

The key to good accuracy is to have a bullet that is just slightly oversized for the bore and cylinder throats. Ideally your throats are the same or slightly larger than your barrel. If the barrel is larger, then you'd want to use a soft bullet in the hope that it would "bump up" or obturate under pressure to fill the barrel after existing the cylinder throat. Ideally you wouldn't want to rely solely on obturation through.

Your bullets should be .001 over the largest measurement, which *should* be your throats.

Actually, you want the bullet to be right at or a hair under throat diameter. The bullet should push through the throat with just a little effort.

If you’re at the right diameter with regards to throats and get leading and/or poor accuracy, it could be the throats are too tight.

[hollywood63]

Titegroup and bare lead bullets don't mix. That practice will get the EPA involved.

Why would that be...................curious minds want to know?

[revchuck38]

Why would that be...................curious minds want to know?

He was being facetious. Titegroup and lead bullets are an extremely smokey combination.