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I stumbled on this load, and have given it to 4 different people. Haven't found a gun that won't shoot it yet.
WLR, or BR2 - BR2's lower the ES by about 15fps.
Brass - Everyone will flame this, but I mix everything. I like LC, one buddy likes Lapua... Oh well.
Bullet - 175 SMK
Powder - Win 748 43grains
Crimp - very light Lee FC
Not home right now so I can't tell you my OAL. But I seat 1/32" off the lands.
Best of luck.
Only problem I see with this "load" is that it doesn't show up anywhere in the Manufacturer's load map for a 175 gr bullet. Lee shows a very narrow load spread of 41.0 grains to 41.3 grains. This usually indicates that the powder clearly was not intended for this combination.
If it works for you, great. I'd strongly recommend that anyone else use extreme caution with this powder, bullet, charge combination. Could have drastically different results.
Might want to state the caliber. I'm just assuming .308.
I prefer the Lee taper crimp for almost everything unless it's a channelured duty type load. It gives a uniform grip on the bullet