This section is for reloading and ammunition only, all loads found in here are used strictly at your own risk, if in doubt ask again.
All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should treated as suspect and not used.
Forum rules
All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should be treated as suspect and not used.
Use reloading information posted here at your own risk. This forum (http://www.full-bore.co.uk) is not responsible for any property damage or personal injury as a consequence of using reloading data posted here, the information is individual members findings and observations only. Always verify the load data and be absolutely sure your firearm can handle the load, especially older ones. If in doubt start low and work your way up.
Trail Boss fills the case up at light loads (cos it's doughnut-shaped). In my .300Whisper I don't use it as the 240gr boolit (cast) takes up so much space.
I use T Boss in .308 subs (180gr Hornady round nose.)
I haven't tried either of these at supersonic velocities, though I wouldn't be optimistic about 300yd accuracy.
Yes, that's the approach we had in mind originally: filling the case up to prevent flash over and the subsequent potential for a low order detonation of the powder rather than a smooth burn. However, others have suggested that a small quantity of a very fast powder is just as good and doesn't suffer from the risk of detonation: it's designed to burn extremely quickly and there is plenty of empty case for it to expand into, thus limiting any pressure spike...
Badger
CEO (Chief Excavatin' Officer)
Badger Korporashun
Quidquid latine dictum sit altum viditur.
"Quelle style, so British"
When I say "wouldn't be optimistic about 300yd accuracy", I am thinking about the 240gr cast load in the Whisper. No reason the 180gr round nose in .308 shouldn't perform fine at supersonic velocity to 300 and beyond!
