90 gr is plenty adaquate for game to coyotes.
The 32 mag is way under rated, unrespected, and under bought by US shooters, in my not too humble opinion. -- A customer from Poland came to the US a few years ago and went hog hunting with a ruger single six, loaded to max with my 115 gr FN, gas checked. The bullet was cut with long nose so it would just clear the end of the cylinder and 296 powder was compressed by it. Velocity was 1450 fps. He shot a 400 pound boar through the ribs and said he saw the bullet turn up dirt 25 yards or so beyond the hog, which trotted about 20 feet and folded.
A 90 gr can be run at similar speed if you want that much punch, but consider that the weight is a bit more then two 22 LR's, and the meplat is fairly large, so it you chug it along at the standard HV speed for 22 LR's you'll be striking with more than double what a 22 LR delivers from a rifle. Kill will be precisely twice as quick and faster in most cases. It will, with absolute positive athority, knock a 2000 pound butcher bull down with a head shot, whereas a 22LR would just stop and lay against the skull under the hide.
With the right powder and 1200 fps loads, the report is very similar to that of a 22 revolver, and there is little recoil, even with the heavy load mentioned above, so shooting it will make the gun seem a bit feeble, but it is a massive small game cartridge which can go far beyond small game in a pinch, with careful shot placement.
