I've loaded a LOT of 250gr RNFP over a very poodle fart feeling 5.5 gr of TB. I've not had the greatest luck with it metering well though and have had lots of +/- .2 gr and even some +/- .3 gr but even at that it's not over or too under and you don't really feel it unless you shoot one short and then one heavy back to back. But it's so fluffy it does fill the case rather well. I've never shot it with lighter bullets though. I know I've LOVED it in rifle cases for reduced loads. A 150gr plated FP in a .30-30 just sings along down the range for all day long fun shooting and is very accurate. I would imagine it might make a good short range varmint hunting load as well if you are looking to not damage a pelt.