ndrhunt

I do not think the range would change that much but moving to the 290 grain bullet vs the 245 - the 290 would not react as much to external forces as the lighter 245. So in my world it would would probably be more accurate at the 200 yard range. Further the remaining energy @ 200 with the 290 would be greater and insure a more clean harvest.

You would be shooting the 245 somewhere around 1850 fps and the 290 somewhere around 1750 fps with a 100 grains of pellets... This estimates are probably a high as this is computed with 100 grains of T7 loose powder.

Remaining energy @ 200 with the 245 would be about 800 ft pounds and with the 290 about 1085 #'s

Were i you planning on that shot with a 45 cal bullet I would go with the heavier projectile...

I say all of this but I am shooting a 40cal 200 grain Lehigh - not really planning on a 200 yard shot but took one last week.