TC209x50
What about if you were using T7 pellets (100gr) and then want to try loose 3f of Jim shockeys gold. If I recall it's supposed to be volume equivalant I thought, however because it's 3f vs. pellets being made with 2f don't this increase pressure? lets say in an encore with a 26" barrel (includes QLA)?Thoughts?
My thoughts: 2-50 grain pellets of t7 are suppose to be equivelent to 100 grains of real BP and/or 100 grains of Pyro anything 2f. 100 grains of t7-2f is suppose to be 15% stonger - do not think it is quite that much more like 10% but nevertheless it is stronger.
2f ignites at a given speed and generates a given pressure at that speed. Depending how tight the bullet is in the barrel and the weight of that projectile the pressure increases qucikly and dramatically until it gets the bullet moving - once it is moving the powder charge burns out rapidly - BP quicker than T7. The next part of the equation is - 3f rises in pressure faster than 2f so again that causes a higher spike faster and again the tighter/heavier the bullet - thehigher the spike - BUT then 3f also burns out faster once the bullet is moving - hence my thought that if you are using a short barrel you might generate more velocity with 3f than 2f and still have burning and pressure pushing the bullet all the way out the barrel - on the other hand if you have a long barrel and the buring completes before the bullet exits then you will start losing velocity. But if you are using 2f the burning process last longer pressure last longer and thisconstantpressure pushes the bullet out of the barrel with no loss of velocity.
If you are a centerfire re-loader you can relate this this to the different buring rates of powders that you use there.
In my mind a 26" barrel is right on the verge -will 3f increase velocity or won't it - when you get to the 28" and greater barrels or 54 caliber 2f is probably the way to go.
Again some of the pressure generated will depend on how much pressure is need to start that object rest moving (remembering the rule an object at rest tends to stay at rest) and how much pressure is needed to make the object accelerate and continue to accelerate.
When I load a sabot/bullet combination - Iusea short starter, thumb pressure then the ram rod. I want to be able to load somewhat effortlessly when I am hunting so I am not interested in the short starter or pounding the sabot down. In th old days they would just drop the ball down and set it against the powder to get that quick second shot off.
I hope this makes some sense to those of you that read it, and TC I hope I have explained my thoughts.