Post by Bullshop on Jul 25, 2019 18:49:00 GMT -7
Since The Bullshop is slowly adding a few powder coated bullets to inventory I have been wondering what would happen if we combine old technology with new. I have this so far unproven idea that the two technologies of conventional lubed bullets combined with powder coated bullets may compliment each other and raise the velocity threshold of cast bullets.
With traditional lubed bullets and high quality modern lubes that do not break down under the highest possible chamber pressures the limiting factor is the shear strength of the bullet alloy. The question was/is at what pressure will what BHN yield to the stresses related to chamber pressure to cause inaccuracy and or barrel leading.
With powder coating the question becomes at what chamber pressure not only one of shear yield but also of friction limits. At some point of friction related to chamber pressure the coating will fail to adhere to the bullet and so also destroy accuracy and a whole new type of fouling that can be difficult or nearly impossible to remove if the coating is a polymer.
Now this brings me to the question that keeps ringing in my head, can a powder coated grooved bullet conventionally lubed raise the limits of allowable chamber pressures to allow higher velocities with good accuracy over conventional lube or powder coated used individually? That right there is the question that is dogging me!!!
It seems to me that the powder coating raises the shear yield point of the alloy and the conventional lube raises the friction resistance of the powder coat. Two systems working together in harmony to compliment each other to raise the limits of each.
We all surely know there is but one way to have this question answered, DONT WE !!!
If someone were to cast a batch of bullets from one mold all in the same alloy then develop loads for each type of lube/coating pushed to the limit then try combining technologies with the same bullet from the same alloy to see if any gains can be made in velocity with an equal level of accuracy.
This is an undertaking I may not be able to resist given the opportunity of time. Right now business is good so I am busy and combined with domestic chores I don't see much room for squeezing in another project besides the ones I am currently involved in, (hint hint)
Lord willing and I am allowed sufficient time in this world I hope I can find the answer to this question that seems to be bouncing back and forth inside the dark recesses of my mind. Such things keep me awake at night and Lord knows I simply cant afford to loose any more beauty rest.
With traditional lubed bullets and high quality modern lubes that do not break down under the highest possible chamber pressures the limiting factor is the shear strength of the bullet alloy. The question was/is at what pressure will what BHN yield to the stresses related to chamber pressure to cause inaccuracy and or barrel leading.
With powder coating the question becomes at what chamber pressure not only one of shear yield but also of friction limits. At some point of friction related to chamber pressure the coating will fail to adhere to the bullet and so also destroy accuracy and a whole new type of fouling that can be difficult or nearly impossible to remove if the coating is a polymer.
Now this brings me to the question that keeps ringing in my head, can a powder coated grooved bullet conventionally lubed raise the limits of allowable chamber pressures to allow higher velocities with good accuracy over conventional lube or powder coated used individually? That right there is the question that is dogging me!!!
It seems to me that the powder coating raises the shear yield point of the alloy and the conventional lube raises the friction resistance of the powder coat. Two systems working together in harmony to compliment each other to raise the limits of each.
We all surely know there is but one way to have this question answered, DONT WE !!!
If someone were to cast a batch of bullets from one mold all in the same alloy then develop loads for each type of lube/coating pushed to the limit then try combining technologies with the same bullet from the same alloy to see if any gains can be made in velocity with an equal level of accuracy.
This is an undertaking I may not be able to resist given the opportunity of time. Right now business is good so I am busy and combined with domestic chores I don't see much room for squeezing in another project besides the ones I am currently involved in, (hint hint)
Lord willing and I am allowed sufficient time in this world I hope I can find the answer to this question that seems to be bouncing back and forth inside the dark recesses of my mind. Such things keep me awake at night and Lord knows I simply cant afford to loose any more beauty rest.
