Likely a decent place to start out. As was previously stated, if it's the "same" bullet just 5g heavier it shouldn't change the barrel harmonic very substantially. Certainly, it's not likely to be just a load it up the same and TADA, but it should get you in the realm of it. YMMV. I like to use the ogive to the base of the brass as my standard point of length reference FWIW. You might also want to measure the bullets themselves for consistency in dimensions. Especially if you are loading hot and within a couple thousandths of the lands. Have fun, be safe.