Quote:
Originally Posted by Frank237
Malysh,
Good information. Thanks for taking the time to post it!
UPDATE...
Took the 5.45 upper to the local shooting range...a State owned Quarry.
Mounted the upper to my old Colt 7.62x39 lower which has performed flawlessly with both the original upper and a 2nd Bushy in 5.56 mm.
The two C-Products 30 rd mags performed flawlessly. Never an issue.
Took me about 5 three round groups at 50 yds to get it sighted in. The MWI BUIS rear sight is new to me and I had no idea what each click equated to. Also had to drop the groups and of course forget my frt sight adjuster...so a little more time fiddling around.
In the end I was pleasingly surprised by this cartridge. Plenty accurate with 1" groups at 50 yds when it all went right. My worse groups were 2-3 inches and each had a flyer that was my fault. I shot up about 240 rds, swabbed the barrel and checked the bolt, etc for lube and shot my last group at 100 yds and it was 5 shots into 3". Nicely centered on the bull. I'm sure optics would shrink it to 2" or maybe less.
I did notice the recoil is a bit less than a 5.56 and compared to my SIG 556 the REPORT seemed to be a bit quieter.
DID have several FTF's though due to the hammer not setting off the hard primers. The upper came with a S&W supplied stronger hammer spring so I'll install that and I'd wager it will take care of that issue.
After 300 rds the gun was dirty...but not excessively so. Had zero extraction problems or any signs of gunk in the chamber from the lacquered cases.
For fifteen cents a rd this is a fun plinker. So far it's all GOOD.
FN in MT
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Frank, I'm happy to learn you are pleased with this set up and caliber!
If I can say this without raising any ire or anger - I noticed you are from Montana( a great state!).
I think somebody mentioned that they had experienced no corrossion problems even after deliberately not cleaning the rifle for a few days after shooting it with corrosive primer ammo. Although I realize every day can have different humidity and dew point figures, I think it would be best to clean these rifles after using corrossive mil ball ammo as soon as possible and not leaving them to later.
I am guessing that many areas of Montana historically enjoy lower average humidity than where I live, or that the elevation might make a difference?
I live in central PA. about 2 hrs. from the closest ocean beaches and our humidity levels are over 50% easily most days of the year.
I would clean an AR or an AK after I shot it with corrossive ammo as soon as I could, living where I do. High humidity levels will hasten rusting and act as a catalyst in conjunction with using corrossive primer ammo.
Also, if you were using military ball(corrossive) ammo - military ammo has harder primers than civilian ammo. As you have surmised you may need to change the hammer spring to something stronger if you start get a lot of non ignitions. I cannot tell you if 5.45 primers are harder to ignite than 5.56 ball ammo but I am sure if you ran an M-60 you have experience with mil spec ammo and cleaning proceedures.
Uncle Sam gave me one for two years. My M.O.S. was 0331.......