Find one good round and stick with it....you'll have no problem dropping a moose with say a 140 grain bullet from a 7mm mag.....ya dont need the 175 grainers Happy Shooting!!

I've owned the 7mm Rem Mag since 1964 and have handloaded for it since about '67 or '68. What I've settled on after trying thousands of loads is the 175 grain Nosler Partition for moose and the 160 grain for deer. You don't need minute of angle accuracy for moose, (I've never shot one over 60 yds) and most deer are probably taken under 100 yds as well.
I handload the partitions but they are available in factory Federal ammo and worth every cent.

I'm with wonsky on this....I figure you'd be fine using the same load for both, once you find one that works well for your gun.

The Winchester Supreme Elite XP3 comes in 160 gr. and would work nicely.
http://www.winchester.com/products/catalog/cfrdetail.aspx?symbol=SXP7RM&bn=16&type=69

Or maybe the Federal Premium Magnum Sierra in 150 gr., which would be good incase you found yourself having to make a longer shot.
http://www.federalpremium.com/products/details/rifle.aspx?id=372

The A-Frames you mentioned would definitely do the job, as would the Core Lokts
http://www.remington.com/products/ammunition/centerfire/premier_core-Lokt_ultra_bonded.asp