243 win, 105 lapua scenar, and h4350

[PowellSixO]

I'll be getting my Howa 243 back in the next week or two. I've been lucky and stumbled across some lapua brass, h4350 powder, and 105 lapua scenars. I'm aware that h4350 is not ideal for this bullet weight, but it's all I have right now (that I'm willing to part with, as my other rifles have dibs on the other limited powders I have). I'm not finding a lot of information on this combination, and was wondering if someone had a starting point for this? I'm guessing 37 gr would be a safe starting point, and I'll probably find max around 42 gr. I'm not chasing FPS, just looking for accuracy above all. Thanks for looking. I'll be sure to post the rifle once it's in my hands.

 

[Seabeeken]

My Hornady x manual shows 105 gr starting at 38.3 gr of h4350 @ 2600 fps

 

[PowellSixO]

My Hornady x manual shows 105 gr starting at 38.3 gr of h4350 @ 2600 fps

Thanks. I couldn't find a straight up answer on the h4350, with that weight bullet. I dug my old Berger book out and it shows this. I think it's pretty conservative, but I'll work up to be safe.