I need a good 300 yard load for 6.5 M/S type...

[Rapidrob]

Ideal .266 469 cast 150 grain bullet with gas check. ( long round nose, gas check base )
I need a good load for 300 yards for this months match to knock down some steel pigs using my 1903 Greek military rifle.
Any of your loads for 6.5 M/S, 6.5 Dutch, 6.5 Carcano, 6.5 Jap using a bullet like this that you have shot at this distance load info would be helpful.

[Rapidrob]

No replies.
I'll try 18 grains of 5744 and see how that works.

[Old Caster]

Experiment with OAL and for sure anneal your neck area each loading. Both can make a ton of difference.

[DonHowe]

As my Dutch 6.5 has a .269/.270 groove I have only shot the 266469 paper patched, but not at longer distances. I believe I loaded 26 grains of IMR 4895. With the Lee Criise Missile 16gr of 2400 has given as good accuracy as I am capable of with the little carbine. In a better barrel the load would likely do well at 150 to 200yds.
Bullet holes from the Cruise Missile show signs of tipping but when shooting paper I don't care ax long ax they go into a group. I have seen 220+ grain .32-40 bullets make oval holes in a sub mod group at 200 yards.