It looks to me the SIERRA is just a tad longer than the XTP. Here are pictures of both in a 180 grain side by side. The SIERRA is on the left and the XTP is on the right.
I have the 300 gr .451" bullets that shoot as well as the XTPs. And they are a flat point in lieu of a hollow point
__________________ PLEASE NOTE THAT DUE TO THE RISING COST IN AMMO PRICES I WILL NO LONGER BE FIRING A WARNING SHOT.
A government big enough to give you everything you want is big enough to take away everything you have.
I'm not as good as I'm gonna get - but I'm better than I used to be. "Life without God is like an unsharpened pencil - it has no point."