New build, need load info on 107SMK and 105 A Max

[Gunner75]

Just finished my .243 rig.
Looking to push 107SMK's or 105 A Max bullets.

I will be using Win brass.
Any input on powder and primers?

I would like to stick with H4350, but the Sierra manual says to use IMR4350 or H4350EXT.

I don't want to push them quite to the max, just looking for a solid load. 2750 or 2850 fps???


Surgeon Repeater
28" Bartlien 8 twist barrel
2094 B&C stock
Badger DM unit
Leupold MK4 8.5-25

 

[22Mag]

Gunner

I have a .243 AI that I shoot the 105's and 107's in a 8-twist bbl. With Fed primmers the rifle likes H4831-SC the best. The best groups come about 3000 -3050 fps with this set up.

Good Luck

22 Mag

 

[Preacher]

I doubt there is any plain ole H-4350 around anymore in the stores, and H4350 Extreme is almost the same as H-4350. Really close enough to use it as H-4350 in your rifle.
Just start low and work up as always...
Most 243's really like H-4350....... extreme or not........ if you find out your rifle don't like it then a jump to the slower H4831 will be called for.....

 

[Flybuster]

Did you read this article on the .243 win yet? http://www.6mmbr.com/243Win.html

 

[Gunner75]

Thanks for the info.

What is the replacement for H4350? Is it H4350EXT?

I haven't been educated on the H4350/IMR4350/H4350EXT.

Why don't they just come up with different numbers?

I have 1.5lbs of H4350 left. I was hoping to use it with F210M primers that I have.

 

[chrisj]

N160 and N165 work well with heavy bullets in the 243. Vihtavuori reloading manual has loads for the 2543.

Chris

 

[Spook]

My most accurate .243 loads were with H-1000 and Retumbo.