ORIGINAL: coloradoprohunter
it would be a good gun out to about 100 yards. dont worry how big the bullet is but if u can get the slug or buckshot w/ the highest payload and velocity. size doesnt really matter. i have seen someone shoot an elk w/ a .22-250 at 600 over the summer and kill it
In this case, I would submit that size does in fact matter. Anyone who is taking elk at ranges such as these is clearly not your fair weather greenhorn.
I would take Paul's advice and seriously consider a 20 gauge instead. With slugs from a rifled bore, you can kill deer out to and to a minor extent beyond 100 yards with ease (at least compared to a .410).