Yeah, same deal, only with the addition of 20W50 Lucas for out ludicrously balls-hot days if I need something that kinda does both.
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notice the wear on a brand new BCM BCG after about 500 rnds, just been rotating it after everytime i shoot a match. does seem to have spread the wear out. but if anybody wants a cam pin will trade for 40 lbs of H322:sarcastic:I've been using EWL 30 weight, really like the fact that it stays in place on hot day's(90+) and does'nt gum up in the cold(-15 with wind chill)
My Daniel Defense BCG cam-pin was 0.001" or so (I forget, but there was a spec difference when I mic'ed it, extremely small difference) larger than the RCA cam-pin, and I could feel with my hands slightly more movement in the RCA setup, yet it delivered less wear, which is to say, no wear vs. catching my fingernail.
Okay, I'm finding tons of good info about the cam pin along with pics using the search button.
I use an NiB cam pin in my LMT E-carrier and LMT std bolt. Some finish wear at the 3,700 round mark but no gouging yet. Nothing catches on my finger nail. I can't remember if I snagged it at Spikes (They're local to me) or if it's an LWRCi. I suspect it's Spikes.
The cam pin always fit virgin-tight in my LMT bolt. When I first got the pin, it wouldn't go in the bolt without grease using finger pressure alone. Greased and it slid in...haven't really thought about it since.
I dunno if I would go with HC since it has been more abrasive in texture in my experience.
This thread needs a gnarly cam pin pic...
http://i82.photobucket.com/albums/j2.../campin006.jpg
I agree Patrick. I don't have many of them but I do find that cam pins that are nickel-boron'd or hard chrome typically last 3-4 times longer. I'd like to pick up one of those RCA (Rubber City Armory) BCGs to see how having a nitrided bolt, carrier, cam pin and firing pin all hold up together.
On my BCM BCG the cam pin measures .3105". The bore in the bolt measures .312 on the insertion side.