How do you beat Meagly McGraw
 

Ok, i've cleared out the ENTIRE area of outlaws, and all that is left is Meagly McGraw and the big brute tiny. After I take about thirty minutes to kill tiny with boombats and thudslugs, I rarely have any good ammo to use on McGraw. Can anyone help me out here?

Thanks.

Go to the big Barn,climb up,and then shoot Stingbee's at him from above.

You mean to the roof?

My strategy was fire a skunk, lots of stingbees, another skunk, and repeat as necesarry.

Yes.
That's the best strategy for Meagly McGraw.

Use Stingbees and Boombats to take out Tiny, then Thudslugs and charged Zappflies to take Meagley alive.

Well, I don't have any boombats, so I need to imrprovise.

Go to the roof,shoot stingbees (If you dont got better ammo,you must take him dead) kill him,bounty him,go to the town,cash in,receive moolah,if dont kill the bounty store clakker :D

Zappflies and Thudslugs are essential for taking any boss in alive, so save your slugs against Tiny. He cannot be saved, so this is an opportunity to launch your most lethal arsenal without losing anything. Stingbees are the staple in this fight. There's no excuse for not having Boombats here, but since you don't, the meagre contribution of Fuzzles will have to suffice.