Since NavyVet83 bowed out of the 50 game, it's up to me to carry the torch.
Based on his bum shoulder, I vowed to not shoot a lot at one time. 5 rounds was it. My daughter was with me at the indoor range. She said the blast was unpleasant. I've fired hard kicking rifles and shotguns before. Quick hard recoil bothers me. This is more like a really firm shove, the recoil is spread out.
I put an Athlon 1x prism sight on it. It gives me more than enough eye relief. The reticle is very busy but by just paying attention to the top dot, it wasn't distracting at all. I had to really dim it for the indoor range. The intensity was set for outside daylight and the whole reticle was a fuzzy mess. Once dimmed, everything was sharp and focused. We shall see how it likes being on the 50B.
The Bear Creek Arsenal upper performed well. No FTFs or issues. I dropped it on one of my no name lowers with what is probably a PSA NiBo enhanced trigger. I like PSA's 2 stage triggers better and will probably grab one next time they are on sale. I went over the BCA upper completely and I found no issues. Some of the older reviews talk about loose screws and such but I couldn't find anything wrong. I got the side charging upper just because. The charging handle isn't the sexiest solution I've seen but it works. Now, if they copied the shape of an AK changing handle, that would be cool. I changed the butt stock to an Adaptive Tactical padded stock. It isn't the best molded stock I've ever seen, ran about the same price as a Magpul but the recoil pad really does work. I used a Duramag 450 Bushmaster 7 round mag, slightly modified by widening the notch in front to match the radius of the 50 B case diameter. I can only stuff 4, sometimes 5 50B rounds in it. It has a sled style follower and is much easier to load the mag than a 223 mag. I had a Magpul 30 round 223 mag with me but forgot to try it.
I just wanted to check my battle zero at 25 yds and didn't shoot for groups but all hit where I aimed. It's time to get busy reloading because that is the only way I can barely afford to feed this beast. I may load some lighter just to take the bark and bite out it a little.
My daughter tested out a .22LR upper I just finished. She liked it. The trigger sucks so she didn't do too well with it. Maybe it needs the trigger out of the 50B and the 50B needs a two stage...