Winchester .270

Question
do you think the shape an/or lenght of a winchester .270 bullet will affect the penetration depth?

Answer
Not so much shape as it is design.
A soft point will hit harder but a full metal jacket will penatrate deeper. Speed and weight will effect this.
These links will help you explore this topic

http://www.exteriorballistics.com/ebexplained/index.cfm
http://www.sierrabullets.com/
http://www.speer-bullets.com/default.asp?s1=3&s2=7&s3=11
http://www.reloadbench.com/cartridges/270w.html
http://ammoguide.com/
http://www.gunnersden.com/index.htm.270winchester.html
http://www.imrpowder.com/data/rifle/270win-2005apr03.php