I thought size would be the only downside. Plus it's much cooler to have cans specific for each gun.

Thanks for the info, I'll check it out. I think my next one will be a 6.8 can. But that will be a while as I've been punishing the bank account lately. I've bought 8,000 rounds of 5.56 in the past week. Now, only 7,000 of it's mine, but prices were decent at the show.
I've been snaggiong whatever calibers I can with my spare cash (including .22LR) , and am in the market for another couple thousand 5.56
If I may ask... how much per 1000 at the show and what brand?
I've been debating making a trip to New Jersey to make a direct purchase from Ammoman/Eric.
I found S&B m193 for 5 per case. Now that's now bargain but 2 1/2 months ago at the same show they had it for 0. And the guy that usually has the best prices wasn't there this time. I'm hearing of shortages again. Tough to get 5.56 right now. I ordered a bunch off of ammunition to go and they had Privi M193 mil spec at 9 per case. I ordered 5000 rounds of that and bought 3000 of the S&B at the show. I like the m193 cause it's a hot load. Runs great in SBR's. Lake City and Am Eagle was running in the mid to upper 0 range. I prefer S&B over everything else.