OK, looking at different load data, the .22K Hornet vs. the .22 Hornet. For several bullet weights, why would 13.5gr of lets say Lil' Gun powder in a K Hornet have a higher velocity than 13.5gr in a regular Hornet? Same bullet weight, same amount of powder, same bore diameter, same case. If it has to do with pressure, why couldn't one just increase the powder in a regular Hornet to get the same velocity since they both use the same case, only one has been "formed". Please help me understand. Thanks

Is your example from the same reloading manual?

Are they using the same test firearm?

Are they using the same lot number of bullets/primers/powder?

For the same reason a 150-grain RN won't use the same load data as a 150-grain spitzer. Bullet profile has a world of effect. Bearing surface is the determining factor for pressure, all other things being equal. That is why Barnes bullets build so much more pressure. They have a WHOLE lot more bearing surface...

quote:

Originally posted by ricciardelli:
Is your example from the same reloading manual?

Are they using the same test firearm?

Are they using the same lot number of bullets/primers/powder?

Those are the right questions to ask.....something is afoul here.