Smokin 300 win mag load in progress…it looks like a lawndart! 😁

[Calvin45]

Been doing preliminary development. The newer generation Sierra 200 grain smk, reaaaallly sleek, long ogive and tail, little bearing surface. Treated with HBN.

Shows promise, now to fiddle with seating depth a bit.

But holy velocity Batman!

No pressure signs AT ALL and she's hitting 3100 fps over a lightly compressed load of 82 grains Alliant RL25. Fed 215m, lapua brass.

Savage 111 long range hunter, 24 inch 10 twist plus 2 inches of muzzle brake haha. Single feed only at this length.

 

[K.E.C. Darkside]

WOW that's Smokin.

Rl-25 was my all time favorite in 300Wm and 180gr Swift Scirocco.

Good for you.

 

[Brathany]

Yeah that's moving! RL25 did great for me too.

 

[MagnumManiac]

Been doing preliminary development. The newer generation Sierra 200 grain smk, reaaaallly sleek, long ogive and tail, little bearing surface. Treated with HBN.

Shows promise, now to fiddle with seating depth a bit.

But holy velocity Batman!

No pressure signs AT ALL and she's hitting 3100 fps over a lightly compressed load of 82 grains Alliant RL25. Fed 215m, lapua brass.

Savage 111 long range hunter, 24 inch 10 twist plus 2 inches of muzzle brake haha. Single feed only at this length.

Yep, RL25 has the same results for me, but with 210g ABLR in my custom 300WM, not HBN coated though. 3080fps in the 28" barrel.

Great results for you, hope it proves just as good on game, if that's your intention.

Cheers.