Something like 97% of RH bow strings "clock" the arrow to the left from the bow.
If you have RH fletching, it will take some time from the bow flight to actually start rotating to the right.
I have since changed my fletching to LH, thus, I use LH bevel broadheads.
If you use RH fletching, you...
Yes, it is the string.
There are many discussions of this, and videos on YouTube clearly showing this.
You can test yourself, by checking the turn of the arrow on a very close range target, and confirming by moving increasing lengths to the target. Noting the position of the fletching vanes...
Bummer about the flex tips.
This is the kind of information I need.
Maybe I should rethink my bullet choices?
I am learning all of this, as I have no direct experience other than commercial ammo.
I guess I used cowboy commercial loads in the past for both rifles.