243 Win 16” Velocities?

[24valve]

@Small-foot's 243 is cut 17", suppressed, and shooting 95 TMK's at 2760. My 18" 243 shoots the same load at 2800 fps.

@ztc92 has one cut to 16.5" and could share some velocities

 

[CBB1]

I’m getting 2835 out of a 17” tikka with 95TMKs and Varget


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[bhylton]

Are you near max with that load?


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Im at max with H4350. I’m using PPU brass as that’s what was available and I’m hitting pressure around 39grains. Seems like people using star line are closer to 41-42gr.

 

[khart_6882]

16.5” tikka suppressed. 41 gr 4350 108 eldm’s. 2693 avg, but I’ve only got maybe 75 rounds through it so should speed up some.

 

[il_cop]

50 rounds or so through the tube...

17 inch Tikka
Suppressed
Lapua brass
108 eldms
2.8 coal/2.263 cbto
40.8 h4350
2775 avg

41.2 h4350 averaged 2805 with great es/sd but showed an ejector mark every 3rd round or so - right on the edge for me.

 

[khart_6882]

50 rounds or so through the tube...

17 inch Tikka
Suppressed
Lapua brass
108 eldms
2.8 coal/2.263 cbto
40.8 h4350
2775 avg

41.2 h4350 averaged 2805 with great es/sd but showed an ejector mark every 3rd round or so - right on the edge for me.

Interesting. Your barrel is 1/2” longer than mine, your coal is .1 longer and your charge is .2 less. Yet you’re getting like 80fps faster than I am. Rifles make no sense to me…

 

[il_cop]

Interesting. Your barrel is 1/2” longer than mine, your coal is .1 longer and your charge is .2 less. Yet you’re getting like 80fps faster than I am. Rifles make no sense to me…

They are mysteries sometimes.
Brass difference maybe?

 

[khart_6882]

They are mysteries sometimes.
Brass difference maybe?

I’m also using Lapua

 

[dwrags]

18” factory Tikka .243 8 twist: H4350 x 103 ELDX = 2740 fps.

I think I could get a little more out of it as well.