i still don't know what to think of the "short magnum" craze. ballistically they are kinda neat, i guess. most of them equal or maybe better the ballistics of the "traditional" cartridges they are designed to replace, and do so using a little less powder. Newton realized this back before the turn of the 20th century and designed quite a few cartidges then that were short, fat and beltless. i have so dang many guns that buying a new one doesn't make much sense, or i probably would have a short mag. only drawbacks i can see is that the shoulder angle is so steep that you might have feed problems sometimes and the magazine capacity is only 2 on most of them. but it shoots a little faster and flatter the old .270, a little slower than a weatherby, with less powder. so those are good things. so i would think that as far as effective range, it would be in same ratio. ought to be a slick setup. let us know how it works out. i'm sure interested.