There's more to the equation than just the bhead. I'm not a Parker guy, but think they have brass inserts now, which would raise the arrow's FOC enough that 100's are adequate. I'm guessing some here, but if they used or advised 125's in the past, it was probably w/ alum inserts.

The main effects of higher weight bheads are FOC and increased K.E. I'm of the opinion that [1] FOC is more critical w/ bheads than field points, [2] minor increases in K.E. are overkill, as most bows already have plenty for deer.

I've shot 3 Parkers at a show and can tell you for certain sharp bheads of about any type well placed = doomed deer.

Now's the time to tinker, lol. Have fun!