Quote Originally Posted by CINDERS View Post
I use 46Gns AR2209 or 4350 in your land in all my 303's No.4's...

I do not think fast powders are the go with the 303's
Agreed, Ron. AR2208 and AR2209 are the 'go to' more relaxed burners than the rapid AR2206H.

Having serious consideration of the exercise, no one can reproduce the Mk VII round as a standard until they can use the open based, rear-weighted Mk VII bullet. And no one is or will be making them again.

So the best one can do is approximate.

The most important thing to do is match a tight recipe for each rifle. If you have 4 x .303's you will have 4 x 'standard' loads, if you're seeking a higher level of consistency and accuracy. If you're simply out for a hit and a giggle, then go with one load to suit all and be happy at 100 yards/metres.