Carbon Proof 243 load data

[freediver474]

Just bought a custom rifle with a 22” proof 243 barrel 7.5 twist. I was given a 90 grain load for it from previous owner but I’m hoping to find a 75 vmax or 87 vmax load for it if anyone has anything to start with. I can’t find any h4350 nearby which is what previous owner used for his loads. Will be using for coyotes out to 600 yards

 

[D̷e̷v̷i̷l̷D̷o̷c̷A̷Z̷]

Just bought a custom rifle with a 22” proof 243 barrel 7.5 twist. I was given a 90 grain load for it from previous owner but I’m hoping to find a 75 vmax or 87 vmax load for it if anyone has anything to start with. I can’t find any h4350 nearby which is what previous owner used for his loads. Will be using for coyotes out to 600 yards

I’ve had really good luck loading 243 Win running H414. I’ve also used Reloader 17. I had to find alternatives when all the H4350 was hens teeth. I have also had luck with H1000 but that can be difficult to find too.

Lots of good info on both powders online from manufacturers.