Steel Case .223 Russian Ammo Wolf, Brown Bear, Silver Bear &Tula in my POF USA Gas Piston AR

am going to test four different types of two different manufacturers' .223 Russian ammo in my POF P-415 upper. I will test the following ammo:

Wolf 55 grain FMJ, Silver Bear

Silver Bear .223 62grn HP

Wolf Military Classic .223 55grn FMJ

Brown Bear .223 55grn FMJ

I plan on firing 40 rounds of each. Much like wine tasting, I want to make sure that my upper has a "clean pallet" for each flavor of ammo. I want to know what steps I can take between firing each type of ammo to insure a "fresh start", and be able to accurately note/judge each type of ammo. What I'm trying to see is which type of ammo will feed reliably in this POF upper. I had several stuck cases using Tula 62 grain HP.

Thanks!

P.O.F. p415 (HK 416 clone) with Barska red dot

<

I took out my P.O.F. p415 (HK 416 clone) with Barska Electro Sight red dot optic. The red dot sight works pretty well, and is sighted in at about 25 yards. I used PMC 55 grain ammo and got pretty good results. I really like my P.O.F. p415. It's accurate, easily modified, a bit on the heavy side, but really a great rifle. It has an "18 heavy barrel and a great HK style front sight. I use a Stag Arms lower with the POF upper and I've had good luck with just about all the mags I've used. I bought some Tapco mags for $10 a piece and they work great so far. I really like the Korean HK 416 knock-off magazines as well. The POF p415 upper is a bit pricey, but if you want quality and accuracy, POF is the way to go. If I had the money, I'd like to get one of their 7.62x51 (.308) models.

P.O.F. p415 gas piston upper....country shooting

Here is some footage of my brother and I and the country in North Carolina shooting my P.O.F. p415 gas piston upper, on a Stag Arms lower. The gas piston upper receiver is fantastic and if I had the money I'd buy another. There's nothing like shooting old cans, milk jugs, and stuff in the country.