Lyman 311334
- Thread starter Ben
- Start date
I make them with a FC III using .014 Amerimax Aluminum
Pistolero
Well-Known Member
I have the 413, it has a shorter nose, I would think almost no nose rider effect, not like this one. I have
had good results with the 413, at modest velocities.
I have not spent any real time learning about these nose rider types. The theory, as I understand it is
the nose rider aligns the bullet at the front by riding on top of the lands, and the rear is into the grooves.
But not much experience with that to see how it works in real life.
Is land width an important consideration? It would seem that a 2 groove 03 bbl would be good for a
noserider type design, lots of area to support the nose.
Bill
had good results with the 413, at modest velocities.
I have not spent any real time learning about these nose rider types. The theory, as I understand it is
the nose rider aligns the bullet at the front by riding on top of the lands, and the rear is into the grooves.
But not much experience with that to see how it works in real life.
Is land width an important consideration? It would seem that a 2 groove 03 bbl would be good for a
noserider type design, lots of area to support the nose.
Bill
Ian
Notorious member
Bill, the "nose rider" theory works great as Ben and countless thousands of others have proven repeatedly.......at extremely modest velocities. Modern rifling tends to be extremely narrow on the land portion, providing little to no guidance or support to the nose at any kind of serious pressure/velocity. The whole fit game changes, starting at about 1600 fps. At extremely high velocity, nothing will support the nose, you have to steer the bullet from behind via tolerance reduction in places most people don't even think about, and matching alloy to powder so the dynamic movement of bullet metal at launch works for, rather than against you.
Pistolero
Well-Known Member
I have minimal experience with rifle cast bullets, limited to about 1700 fps or less, so my
skills in that area above that velocity (pressure) are nearly zero. I have no doubt of what you
say, but little idea what the practical application is, and not a lot of need for it, so far.
Bill
skills in that area above that velocity (pressure) are nearly zero. I have no doubt of what you
say, but little idea what the practical application is, and not a lot of need for it, so far.
Bill
Ian
Notorious member
Practical application of HV cast bullets? Well, hitting things at 300 yards and beyond, and killing things. Those two factors are what drive my whole quest for speed, because it is (in 30-caliber and smaller cartridges) necessary to achieve my goals. Even at nearly 2500 fps muzzle velocity, my short AR-10 is only putting the bullets out there at 300 yards at something around 1600 fps. Imagine if I started at 1600? The important thing is to keep all this in perspective and build loads for what you want them to do, and though I post a lot about HV stuff and techniques, I also play the other end too and much in-between.
Borrowing a photo from some guy named Ben "on another site"....
I hope he doesn't mind.
311413.
View attachment 9307
I crimp in the front groove.
That "other" Ben removed the GC cut in this mold.
Bill
That guy is a NUT..........don't pay any attention to anything he says........
