Re: jump to lands
What they said!!! Bullet jump is all over the place. Benchresters usually seat into the rifling, not just on it. But Weatherby boomers have around .250" freebore, yeah, about 1/4". Iv'e seen two .30 x .378 customs (with factory dimension chambers) shoot 5 shots under 1/4 moa, so freebore sure didn't hurt them.
Couple of things to remember. One, as you approach the rifling, at some point the same load will start to increase in pressure, and two, some bullets like being into the rifling, and some don't.
If your rifle is for hunting, you want ammo that will go in the magazine. Start there, and only go to single loaded ammo as a last resort. If you have a good rifle, you will find that it will shoot something that will fit in the magazine.
Good luck and good hunting, Tom
Texas State Rifle Association Life Member
NRA Endowment Life Member
A big fast bullet will beat a little fast bullet every time