Cripes Seafire, you Yanks talk funny. It's G'day not Gidday...we'll have you talking like a local soon I've ordered a 5lb keg of Blue Dot, due in the next month or so, thought I might try Blue Dot in the 375H&H, 458WM and 458Lott.
Take care...
Con

Con,

Keep me posted on how that powder works in the 375 & the 458! In a 444 Marlin, 20 grains gives me about 1750 fps with a 300 grain Hornady XTP if that is any assistance.

Roos driving armoured cars down in OZ now, or you looking to start hunting Tractor Trailer Trucks? Pretty big calibers!
Been hanging out with Texans? or Alaskans?

And G'DAY Mate!

( Actually I was just seeing if you were awake on that Gidday, so you passed the test, congrats!)

Cheers and Bloody Good shooting
seafire

thats great stuff! if ya ever get a chance, i'd love to see 125gr - 150gr bullet data!

Dang ya seafire . . .

I had just sprung for a jug of Red Dot to do some cast bullet launching when you started this Blue dot nonsense . . .
Now I hadta buy a jug of Blue Dot (which has ALWAYS exceded book velocity in EVERY load I have tested in the past) just to test your loads.
It ought to replace many other things and noise level is certainly lower. Kinda important here in the east!

I gotta try several of your listed loads and encourage you to go buy a 45-70 contender to play with.

I will have to sernd you some cast 338 bullets to try also.

The Lee 220 grain is very accurate with 39 grains of 3031 or M-9. Who knows if I switch to Felix Lube and BD maybe I can get the 200 grain FNGC RCBS bullets sto perform!
With that many NEW varibles I will never go to the effort to see which one made it start performing. Got it to hunt with and it shot patterns at 50 yards and the Lee and (Hornady 200 FN) made one hole about 3/8ths - 1/2" outside measurement.