I am just fed up with ammo prices and need to save money so I can do some more shooting. Can anyone tell me their most honest, unbiased opinion about shooting the Brown Bear and its cousin, Silver Bear, out of your ARs? I have an LMT MRP AR, as well as a Rock River Tac A4 AR. The LMT is 1:7 twist, whereas the Rock River is 1:9, so I would prefer to have a mix of 62gr and 55gr ammo, but most shooting will be done from my LMT, so I would mostly want heavier weight bullets shot out of it. It seems the M855 green-tip ammo is the cheapest 62gr+ weight rounds I can find and those are just outrageous expensive, like over $0.35/ round. I have seen some Silver Bear 62gr Soft-Points going for $0.22/round.
So, whats the scoop? Should I just stay so far from any steel-cased lacquered ammo or considering the prices of ammo, be willing to make concessions and start using this stuff for my plinking ammo.
I know these are some nice quality ARs I have, especially the LMT, and I have heard the horror stories of steel casing scratching up the chamber, but I'd like to hear from various people here their opinion about this issue. One thing I know is the Silver Bear is Zinc-Plated, so I was thinking that may prevent the steel on aluminum/steel contact that would happen with steel ammo that is not plated like Wolf.