Questions on 303 Reloads

[Robert303]

I have quite a few years experience loading various pistol calbres and a few years experience loading .303 and 6.5 x 55 Swedish. However I'd like to check some points and ask a few questions:-
1) Does anyone make a good copy of the Mk VII flat bottomed military bullet?
2) If so any ideas where I can get some in the U.K.?

At the moment I'm experimenting with Vithavouri 140 loads behind a 180 gr Sellier & Bellot bullet.

The standard load that people use seems to be 41 grns. At present I'm getting qite good results with 39 grns but lack range time to try a lot of loads in between.

Can you confirm if I am right when I say that an increased powder charge will result in a flatter trajectory?

Will an increased powder charge print higher on the target at say 200 yards / 400 yards / 600 yards?

The Rifles I'm using are a No4 Long Branch an SMLE III* and a Long Lee.

Any help / discussion / ideas / theories are welome as are pet loads (I do know enough to start recommended loads 10% and work up!)

Thanks

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