I have been thinking about that "nose riding" thing.
Getting a cast bullets nose to snugly align itself into the rifling before the rifling fully engauges the bearing bands.
Do any of you gunnutz have any experience with this?
*
First, I tried seating my bullets further and further out of the case neck, and into the rifling.
I was hoping that I could seat the bullet far enough forward to get the gas check to start into the case neck.
To protect the base and bullet bearing surfaces from the firing sequence gasses.
Seating my bullets about* 0.150" further than I had before, I noticed that as I locked the bolt closed, I could feel the bullet slide/engrave into the rifling.
I lifted the bolt, and had to pound very firmly back on the bolt to open the action, and remove the cartridge/bullet.
*
This time the front major bullet bearing band had a clearly defined rifling grooves, AND the bullets nose had clear indication of tapered rifling marks. Is this what we are looking for?
By the way, the noses on my bullets vary between 0.301 & 0.0327" in diameter.
*
I have seated bullets into the rifling before when using jacketed bullets,* and that always made me feel a little nervous about spiking pressure potential.
*
Is this much bullet engraving with the cast bullets "normal" for Cast Bullet precision shooting?
If so, I will go after it, and continue to experiment, and load develop.
*
At this point, the gas check is probably just entering the bottom of the neck. I suspect that* the combustion gases will still get to the side of the bullet base, before, the neck completly encompases the bullets base. But MUCH better than before.
*
Do you experienced cast bullet*target shooters have your rifling lead machined to allow for this style of shooting, or a custom mould made?
Let me know what you think.
Getting a cast bullets nose to snugly align itself into the rifling before the rifling fully engauges the bearing bands.
Do any of you gunnutz have any experience with this?
*
First, I tried seating my bullets further and further out of the case neck, and into the rifling.
I was hoping that I could seat the bullet far enough forward to get the gas check to start into the case neck.
To protect the base and bullet bearing surfaces from the firing sequence gasses.
Seating my bullets about* 0.150" further than I had before, I noticed that as I locked the bolt closed, I could feel the bullet slide/engrave into the rifling.
I lifted the bolt, and had to pound very firmly back on the bolt to open the action, and remove the cartridge/bullet.
*
This time the front major bullet bearing band had a clearly defined rifling grooves, AND the bullets nose had clear indication of tapered rifling marks. Is this what we are looking for?
By the way, the noses on my bullets vary between 0.301 & 0.0327" in diameter.
*
I have seated bullets into the rifling before when using jacketed bullets,* and that always made me feel a little nervous about spiking pressure potential.
*
Is this much bullet engraving with the cast bullets "normal" for Cast Bullet precision shooting?
If so, I will go after it, and continue to experiment, and load develop.
*
At this point, the gas check is probably just entering the bottom of the neck. I suspect that* the combustion gases will still get to the side of the bullet base, before, the neck completly encompases the bullets base. But MUCH better than before.
*
Do you experienced cast bullet*target shooters have your rifling lead machined to allow for this style of shooting, or a custom mould made?
Let me know what you think.
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