Primarily, but you moved to 175's and still subtracted barrel length, so I thought it might be worth pointing out that not all the #6 data was shot from the 26" barrel.
OK, here�s data from Nosler #5 for the .280 Rem AI and the 7mm RM, all from 24" barrels. Draw your own conclusions.
140g @ 3340fps, 67.5g Re22, 7mm RM
140g @ 3196fps, 63.0g Re22, .280 Rem AI
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+ 144fps, 4.5g powder, 7mm RM
150g @ 3248fps, 63.0g IMR4350, 7mm RM
150g @ 3107fps, 63.0g IMR7828, .280 Rem AI
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+141fps, same powder charge, 7mm RM
160g @ 3112fps, 79.5g H870, 7mm RM
160g @ 3058fps, 63.0g Re22, 7mm RM (Since H870 is no longer available)
160g @ 2963fps, 61.0g N165, .280 Rem AI
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+149fps, plus 18.5g, 7mm RM (H870)
+95fps, 2.0g powder, 7mm RM (Re22)
175g @ 2970fps, 62.5g Re22, 7mm RM
175g @ 2828fps, 58.5g IMR7828, .280 Rem AI
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+142fps, 4.0g powder, 7mm RM
