Favorite 303 British loads

[Seabass]

I've found Alliant Reloader 15 (40 to 43grains max) with 180gr Speer RN to give good velocity (2390fps) and accuracy out of my 1942, Mki*.

Good luck.

 

[Billyboy13]

My #1 mk3* just loves Hornady 174 RN interlocks pushed by 37 grains of H4895. 1" groups @ 100yards consistantly. Took 2 deer with this load last November.

 

[Paulinski]

I guess my load is underpowered I load 174gr Hornady with 35gr of RL-15.

 

[Qhergt]

We've always just used IMR3031 and either 150 or 174gr leads with book loads.

i use that with 174 sp hornedys and 35G... bout 1.5" at 100.

got better results with 46G H414 with same bullet... 1" at 100 easy with all 3 of my no1 mrk3s

 

[frykasj]

My target load for my .303 is as follows:
Federal brass trimmed to 2.222"
WLR primers
41 Grs. of RL-15
174 Gr. Sierra Match-King #2315
OAL: 3.020"

I spent the better part of a summer to develop this load, making sure everything was just so. I get 1.125" groups @ 100 Yards, and the velocity equals the original MK. VII load of 2436 F.P.S. The bullet BC is spot-on too.

Your mileage may vary of course!

 

[PerversPépère]

Sierra 180gn Pro Hunter, 41gn IMR4895 in my No.1 Mk111 with Parker Hale target sights.

Most reloaders do not take into account that Enfield rifling likes flat-based bullets.
I had similar results with many Enfields, using that bullet. The Pro-Hunter is a very good bullet, at least in .303s.
Perhaps its flat base is upsetting just enough to give superior obturation, I can only guess...
PP.