Murphy,
I shoot a Swift improved with a 14 twist Hart, I have never gotten anything over a 53 grain bullet to shoot, just can't spin them fast enough. 50 & 52 grain bullets make little clusters.
Attached is a spreadsheet I put together to look at bullet RPM in relation to velocity and barrel twist. You can change the barrel twists to anything you want and by changing the velocity, you can see just how fast you are spinning the bullet.
Most people are surprised by just how fast we spin these bullet, I sure was!
Let's say the ideal velocity for a long bullets is around 3100-3200 fps from an 7.5-8 twist barrel to stabilise it. According to the spread sheet, this equals about 300,000 RPM. If you change the velocity in the spread sheet to approx 5900-6000 FPS, you can reach the 300,000 RPM number.
Obviously, we can never reach velocities anywhere near that. Long sleek bullets from slow twist barrels just don't work.
Regarding the lead bullet ban in California, that is exactly what it is, an agenda.
Back in the 70's while working in the gun store, I made the statement many times (and I still stand by it) "They will never get out guns, but they will chock us with regulations to the point that most shooters will give up!" That is exactly what is happening her in California.
In the 70's there was prob 40-50 good gun stores, I can now count them all on one hand with fingers left over. We had a shop in the valley called "The Reloading Center", carried no guns, no loaded ammo, nothing but reloading supplies. The City of LA made it so hard on him with red tape and just plain harrassment, he gave up. Closed the shop and moved to Arizona.
It was so bad, they were sending in underage guys in trying to buy powder and primers. Cliff caught them twice getting into police cars behind the shop after being turned down. I don't know what you call it, I call it HARASSMENT!
We ended up loosing a very very good shop.
Randy