Need recommendations for "low powered light alloy pellets".

You can start with H &N "Green" pellets. They are lead free and lighter weight. Go to any of the vendors like Pyramid Air and look up Ammo then you specific caliber and then H&N . You can get more info there. I believe they make a starter kit with 4 or 5 different weights and shapes. Nice cheap way to find out what works. Enjoy and let us know what you find.
 
"davecole"I'm not sure how "light" you are looking for but the Gamo GTO pellets have been decent, not as accurate as lead, but decent in both .177 domed, wadcutter and .22 domed shooting inside of 25 yards.
That's part of the problem. I'm not sure how light I want either. This is for an in-house, rainy-day range, so I'm guessing, the lighter the better. I'll check out your suggestion as well as socaloldman's too. I'll report back.

On a side note, I did snag some Crosman 5.4 gr. "fast flight" pellets. (I think they're called something different now.) They have a bright orange casing, with a non-lead metal tip. With one pump, you can actually watch them fly. Kinda like a pseudo-tracer. But I'll check the others mentioned.

These: https://www.airgundepot.com/crosman-powershot-fast-fligth-penetrator-pellets-177-cal.html
 
"Dcorvino"
"davecole"I'm not sure how "light" you are looking for but the Gamo GTO pellets have been decent, not as accurate as lead, but decent in both .177 domed, wadcutter and .22 domed shooting inside of 25 yards.
Hi the GTO pellets are made by JSB Predator international not Gamo
just wanted to pass that along
Dave
yep! my bad!! Must have been in the sun to long today!! LOL 
 
"davecole"
"Dcorvino"
"davecole"I'm not sure how "light" you are looking for but the Gamo GTO pellets have been decent, not as accurate as lead, but decent in both .177 domed, wadcutter and .22 domed shooting inside of 25 yards.
Hi the GTO pellets are made by JSB Predator international not Gamo
just wanted to pass that along
Dave
yep! my bad!! Must have been in the sun to long today!! LOL
Completely understand my friend
It happens to me all the time 
hope you have a great day