I have a 270 wsm with 1-9twist barrel 26" . I was wonder what kinda speed people are getting with the 117gr and 126gr hammer hunters and what powder you are using? Will use it for hunting 0-500yards or so . From totes up to elk .
Not many guys out there with fast twist 27's. We have a customer that runs the 27wsm that I think had some data on those two bullets.
I would look for 3450 and 3550 fps with them.
This is tough for me to figure out. If I use Litz number it will shoot over targets until you get out much past it's usable range. The .313g7 was spot on with a 28 wsm out to the 1000y mark. Seems that every rifle will have it's own bc characteristic. All I want from our published bc is to get our customers on target so they can make their own bc determination from there. In fact bc is not a high consideration for our hunting bullets. Accuracy and terminal performance are by far more important. After that comes bc. The 177g 28cal bullet is one of our most popular bullets. To my knowledge guys are not having trouble with bc. .237g7 is very low. If you run the bullet well past its usable hunting range it may play out. I think Sierra does bc the best with 3 bc values depending on the vel of the bullet. I think it is difficult to use one bc from muzzle to the end of flight. The .313 g7 bc is based on a form factor of 1. Our Hammer Hunter line of bullets seem to fall between a form factor of 1 and 1.1. As form factors go 1 is good not great. At a form factor of 1.1 the g7 bc would be .285. I would say that a good usable number for your system should fall into this area. I've had customers contact me and say that our bc is not high enough. I finally quit worrying about it.What’s the 177 Hammer hunter bc? The AB has it at .237 and you .313