Troublesome Long Branch

[CINDERS]

You cannot surmise that a load in a totally different action will work in the Lee Enfield the only way to do it is to load up a swag of different weighted charges of the chosen powder get to the range and go from there looking for nodes and pressure 3 shot groups are good enough to find nodes 5 shotters your just burning money.
Without getting too technical I played around & around with reloading the 303 with mixed results over the years so after much mucking around and a couple of dismal failures especially with Win-748 I pulled all the rounds I had loaded think about 300 and went with one that seems to work in all my 303's.

WARNING NO LIABILITY ACCEPTED WITH USING THIS LOAD DATA REDUCE LOADS BY 5% AND INCREASE SLOWLY CHECKING FOR SIGNS OF PRESSURE OR HARD EXTRACTION.
What works in my rifles may not in yours so take your time as the results I attained were very good across my No.4's MKIII and my T having won events using this load with the SMK have not done much with the Bullet Factory one yet..

46 grains of AR 2209 (H414, 4350, IMR 4350 to you in the US) Fed 210 Gold Match or CCI BR2 with RP case (Which we can no longer get here in the west!) I then made it to a P.O.F MKVII COAL with an SMK 174gn bearing in mind the ogives are different as I did not want to have a bullet point hitting the mags front or have feeding issues.
I have the Bullet Factory 174gn FBHP to play with initial results are promising I helped another member here with load data and they are pretty stoked how it worked out using these projectiles I am pretty happy with the overall product from this place about time Aussies got it happening.

Get out and about and buy Nick Harvey's latest book on reloading about 50 bucks