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Im a bit limited to 150gr approx as I have a 1-12 twist barrel. I have heard that 30/30 projectiles work well subsonic so will try some soon. Would be nice to have a 200gr that stabilises in the 1-12...

Finally got to the range to test my Trail Boss loads today.

Tested 3 batches from 9, 8.5 and 8 grains of trail boss. Tested the first few shots of each batch to check for key holing and tumbling...

Thanks all for the advice.
That formula seems simple enough for me to even work out Pete. Toby thanks for the offer but ive just been unable to get to the range for ages, have a few loads waiting...

Thanks Toby I remember that thread, but was hoping someone may have tried a 150gr. Will prob start at 10gr and work my way down. I only have 20 cases to play with currently.
1-12 twist 18 inch...

Hey all.

Has anyone used trailboss for subsonic 308 or even supersonic lower powered rounds. The net research states between 8.0-10grs of trailboss for a 150gr should go subsonic.

Anyone using...