good load new bullets?

"Normally" good reloading practices say any time a component is changed to drop powder charge and do a work-up again. But, I'd try the same load with a same weight bullet...

Hornady #9 shows five different bullets listed under the 55 grains groups of bullets ... they all use the same charges across the board .... including the Vmax ..... so Yes I just change out the bullet and keep going ... so far no problems .... I don't expect any either ...

Different bullets will have different oal to the ogive..... I use the stony point or now Hornady tool (oal gauge) to measure for oal to the lands (where bullets ogive contact the lands) which gives you in my view the best way to measure the bullet jump to the lands…. I use this in conjunction with a precision mic for head space…. This has worked very well for me for improving group size….

I would start with the same jump distance.... and then increase or decrease .005 from there and see what the groups are doing. As well as start at lower end of powder and work up..... enjoy

I would contemplate this first.....vmaxs are a bit longer than the sp.....do you wish to keep case pressures the same? If not and you're only concerned about oal in relation to lands, then you're fine. My 50 spsx is real short for a 50gr. (.595) I'm loading them at 2.155 oal. Keeping a nosler standard .2" of bullet in the case. If I swapped to a longer bullet, the length would likely increase as well. I'm working at case pressures more than distance to lands with 50gr anyway. Just a thought.........should amend to include that it's the standard for bullets of similar length.

I should have pointed out that Hornady #9 list a C.O.L. of 2.200" for the 55 gr FMJ, SPw/c, SP & SPsx .... it lists 2.250" for the 55 gr VMax...

you can make a "bubba" gauge, by simply resizing a fired case, then sloting the neck. The tension will hold a bullet enought that you can push it against the lands....If your feeling suuuuuper, industrious drill out the primer pocket and thread to 8/32 then use your cleaning rod as a handle to push the case....i usually just drop it in the chamber and close the bolt.

Unless im changing projectiles with a major diffrence in shape, like round nose flat base to vld boat tail, ill usually use the same powder charge. I WILL re-work the coal so im not jamming bullets into the lands. I always check the first shot carefully for signs of pressure, but so far i havent had an issue with this practice.

You load for the weight, not the type of bullet. You may need to tweak the load for 'em though. There's absolutely no safety issue one way or the other though.

I'd go by weight, but there are subtle differences with the thicker jacket of the FMJ's and they may not conform to the barrel as well at the same pressure. Your V Maxes are hard to beat for accuracy IMO, especially in smaller groups.