If you can't do it with the .270, then you probably can't do it with anything else either.
I prefer heavy bullets myself, and if I carried a .270 I would prefer a 150 gr bullet for moose. But if all I could get was a 130 gr bullet for my .270 I wouldn't pass up the trip. The rule of thumb is to choose a bullet that has a reasonable expectation of killing the animal with a single shot from any direction or angle within the range limitations of the cartridge or shooter.
We should consider why the 150 might be a better choice under some circumstances than the 130. Both bullets will open up to about .60 caliber upon impact, although some lead core bullets might show a slightly larger upset due to the longer core of the 150's compared to the 130's. However, should both bullets have an impact velocity of about 2900 fps, the resulting wound volumes would be very similar. The advantage of the 150 should be in slightly deeper penetration although in practice the difference might be more theoretical than real as the higher impact velocity of the lighter bullet makes up for the larger mass of the heavier bullet. The difference in penetration hinges on many variables not the least of which would include the construction of the bullet, it's impact velocity, and whether the bullet impacts any large bones as it passes through the target. The 150 would have an advantage on a quartering shot, but there again it depends if the bullet only encounters soft tissue, which may not be the case if the shot is quartering towards.
The .270's advantage is also its disadvantage, that being high impact velocity, particularly with 130 gr bullets. With impact velocities of 3000 fps, the velocity range where cup and core bullets will reliably function has been far exceeded. If there is a place for premium bullets it is when the 130 gr .270 is to be used on heavy game like moose. Therefore if I had to choose between factory .270 ammo for moose I would make a conscious effort to find ammo loaded with a premium bullet. I don't think it matters which brand you choose, or whether the bullet is a mono-metal design or a bonded core design provided your rifle is sighted in for the ammo you carry.