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Yup, 4350 and most "long-grain" extruded powders will tend to hang up in a rotary drum powder measure and you'll shear a few grains as you meter each charge. It will probably get a little better as the measure gets slicked up from use but the measure will always do it a bit with those types of powders.
As mentioned, try using one of the spherical powders. WW760 does work pretty good in the .270. I use it with 130gr loads in my own .270 and in dad's .270.
Another thing you can look for is some of the newer "short-cut" extruded powders. Hodgdon makes a short grain version of their H4831. It's sold as H4831SC. I've had very good luck using H4831 & H4831SC with both 130gr and 150gr bullets in my dad's .270. It's a slower burning powder than 4350, but is one of the classic "text-book" powders for the .270.
When measuring those extruded powders, it's helps to be very consistent when you "throw" the charge...use a sharp snap up of the handle to dump the charge and another sharp snap down to reset for the next charge. Don't hammer it, but a good consistent quick flick of the lever will help you meter consistent charges each cycle. You're gonna shear a few grains so that'll just be something to live with.
Welcome to TFF...I'm assuming that you're up around the Grand Forks area?
As mentioned, try using one of the spherical powders. WW760 does work pretty good in the .270. I use it with 130gr loads in my own .270 and in dad's .270.
Another thing you can look for is some of the newer "short-cut" extruded powders. Hodgdon makes a short grain version of their H4831. It's sold as H4831SC. I've had very good luck using H4831 & H4831SC with both 130gr and 150gr bullets in my dad's .270. It's a slower burning powder than 4350, but is one of the classic "text-book" powders for the .270.
When measuring those extruded powders, it's helps to be very consistent when you "throw" the charge...use a sharp snap up of the handle to dump the charge and another sharp snap down to reset for the next charge. Don't hammer it, but a good consistent quick flick of the lever will help you meter consistent charges each cycle. You're gonna shear a few grains so that'll just be something to live with.
Welcome to TFF...I'm assuming that you're up around the Grand Forks area?
