i dont have any sands or hognose but i feed all my snakes till it leaves a little bump in them. about 1 1/2 times the size of their thickest part. sometimes larger, but not too large. if your feeding it mice pinkies i would switch to rat pinkies and go up from there. rats have twice as much nutrients as mice.

I actually prefer to stay with mice, as opposed to pinkie rats. Pinkies and fuzzies are extremely fatty, and their skeletons don't have as much calcium as older rodents. Rats are higher in protein (and, unfortunately, fat,) gram for gram, than a mouse of comparable age, but  "twice as much" is stretching things. Rats are good feeders once you're on at least the hopper level. Before that they're close enough to get by on if that's what's available, but nutritionally they're a little over-rated. 
There's a good argument for starting on pinkie rats if it's a big honking species that you really can't afford to have fixated on MICE when it grows up (I had a female coastal carpet for 20-odd years that wasn't put on rats soon enough, which was a pain in the ASS) but for little hogs and sands I say that any fuzzy is better than any pinkie, and any hopper is better than any fuzzy. When the snake's big enough for rat hoppers, then rat versus mouse becomes a better question, I suppose. But hogs are more fat-sensitive than most of the rodent-eating colubrids, so for them I'd still lean toward mice. 

They seem to be nutritious enough. My western is three feet long (and trust me, many captive mouse-fed hogs are even bigger than her; some of those old Audabon records really need to be updated!) and as thick as my 6.5' bullsnake. (The bull's young still, so he'll no doubt eventually outgirth her, but it hasn't happened yet.) That's from eating mice every five days until she was about two years old. These days she eats the same sized meals she did at two years, but less often because she's grown, and she maintains excellant strength, mass, "sinewy-ness" and energy. If I feed her as much as I used to, now that her metabolism is a little bit slower, she sometimes gets hair impactions, so once I got hip to that I adjusted the schedule. Every ten days for a full-grown snake that doesn't have to breed or brumate is, at least in her case, plenty. Some of my other species would disagree.

When she was growing, I went with about 20 per cent of her pre-meal body weight every 5 days, including during shed cycles, up until she was about a year old. Then, it went down to about ten per cent, every six days, for the next year. Since then about ten per cent every 10 days, skipping meals before sheds, seems to suit her better. Actually, it's possible her meals these days are an even lower percentage than that, but she's too big to feed in a container on top of the scale like I used to, so while I still know how many grams the mice are... I've gotten kind of lazy about weighing the actual snake.