I've had a few rifles (w/ free-floated barrels) string a bit when I went too hot for the bullet/case/powder/rifle combo. Last few load development projects have involved loading progressively hotter until vertical strings start, then back off to an optimal load for that combo.
I don't like forend pressure but if your rifle does I'd stay with it. Have read a bit about varying forend pressure but so far haven't had to try it.
Life Member NRA, TSRA
Smokeless powder is a passing fad! -Steve Garbe
I hate rude behavior in a man. I won't tolerate it. -Woodrow F. Call Lonesome Dove
My favorite recipes start out with a handful of used wheelweights.