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What I mean is I think its to slow for the M14/M1A gas system. I have not done extensive testing with Varget in my scout. The loads I have tried were 155gr. A-Max/41.8 Varget and 168gr. Sierra MK/41.5gr. Varget, both with new Lapua brass. The A-Max did OK. I did have a FTE or two with the MK's.(out of 10)Bill,
When you say it's too slow for the gas system, what do you mean? Do you have failure to functions with it?
The real strength of varget and why so many people like it is it tends to be very temperature insensitive, especially in auto-loaders, where the round may sit for up to a minute in a hot chamber. Most powders will tend to boost pressure and velocity under these circumstances.
I don't see any problems with your choice, 4895 is a great powder, and has been with us for a long time. It's also the go-to powder for .30-06 in M1 Garandes.
What I mean is I think its to slow for the M14/M1A gas system. I have not done extensive testing with Varget in my scout. The loads I have tried were 155gr. A-Max/41.8 Varget and 168gr. Sierra MK/41.5gr. Varget, both with new Lapua brass. The A-Max did OK. I did have a FTE or two with the MK's.(out of 10)
As anecdotal as it may be, none of the Sierra MK's felt right.
B
I think this problem is likely due to the differences on the scout gas system vs a standard M1A gas system. I imagine they have a smaller gas port hole, to restrict the volume of gas, which for standard cartridges would be higher closer to the chamber.