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#136
I plunk tested Xtreme 115 grain heavy plate concave base bullets. They worked all the way to 1.165 OAL.  I use Bullseye powder and get best accuracy with longer OALs and generally set mine at 1.150.  Haven't had any problems running them in the R51.
#137
R51 General Discussion / Re: Contact with Remington
September 26, 2018, 03:31:41 PM
Since Remington confirmed the serial number, you have a Gen 2.   I have one with the Charlotte frame and one with the Huntsville frame. Both were bought new last year. They are the same, so no worries.
#138
R51 General Discussion / Re: Any range updates?
September 13, 2018, 08:58:42 AM
Ran another 100 rounds through it with the new mags and no issues. Good to go.
#139
R51 General Discussion / Re: Any range updates?
September 07, 2018, 04:57:13 PM
Does it shoot low from a rest or is it something in the ergonomics that result in low hits?
#140
R51 General Discussion / Any range updates?
September 07, 2018, 08:56:46 AM
Has been quiet here. Anyone been shooting their R51 lately? Anyone? Bueller? Bueller?
#141
R51 General Discussion / Got some new mags
September 05, 2018, 10:27:04 AM
Got some new mags from Remington last week. I ran 100 rounds through them, including 50 hollow point and flat points that would jam in my old mags. Everything worked well with the new mags. I did not load them in a 7 + 1 configuration, only 6 +1. 
The new mags have no obvious difference but the springs feel a little more firm. Maybe just because the springs are new? Anyway, they're working so that's what matters.
#142
Introductions section / Re: Hello from NJ
August 26, 2018, 08:45:56 AM
Quote from: abush on August 10, 2018, 06:44:44 AM
Have always been interested in mechanical devices from cars, motorcycles and watches to firearms.
When I saw the terrible reviews of the initial R51 I knew I had to get it!  I guess I have a soft spot for the underdog in my heart.
Just picked up my R51 last night its a GEN 2 Huntsville 2 tone. Looking forward to getting to the range with it.
Cheers
Welcome from Texas!  It sounds like you will like this forum - a lot of gunsmith tinkering here.  Post a range report when you get a chance.  We are always interested in how each other's R51s are running.
#143
R51 General Discussion / Re: New magazine design?
August 24, 2018, 12:20:47 PM
Quote from: 1911SHOOTER on March 24, 2018, 02:49:46 PM
Johnny,
     I have 8 mags, from '16 to '18.  The only one I have not had to modify
is the 2018s.  Are you having trouble with nose dives or failure to feed?
Pick 2 mags, shoot them and only them, at least 4 loads in each mag.
Keep a log of which mag performs.
And whether or not the mag was modified in any way.
It won't hurt to engrave  numbers on the sides of the mag.  That is what I do.
     See what happens, send me the results on the log you kept.
I will see how it goes.
     Also, remember do not use the slide lock to load the gun.
Slide the mag into the gun with slide locked back.  Pull back on the slide and
release it.  Then take the mag out and replace the round that is now
in the chamber.  That will give you 7 +1    :)
Blackie
Are the follower legs on the 2018 mag shorter than the earlier mags?
#144
Your evaluation makes sense to me. If the lip tips the cartridge nose up, I wonder if the lip was added to help prevent nosedive jams. Has any of your ammo tried to nosedive?  On the other hand, mine will experience nosedive jams when using flat point or hollow points, so I suppose maybe the lip was not for preventing nosedives.
#145
R51 General Discussion / Re: Latest Range Session
July 30, 2018, 01:57:03 PM
That's encouraging to hear about the new mag.  Neither my Charlotte nor Huntsville model has had an issue with shooting low.  I've had the issue with other handguns but not the R51s.
#146
R51 General Discussion / Re: R51 Magazine lips
July 29, 2018, 12:21:49 PM
Just for comparison, I measured the width of the feed lips on my Ruger American 9mm mags.  They measure 0.335 front and back.  It looks like it fits the 9mm cartridge better than the R51 mags.
#147
R51 General Discussion / Re: ammunition
July 27, 2018, 06:28:03 AM
I've had good experience with the Hornady American Gunner series. Any ammo with the Hornady XTP bullet seems to feed well.
#148
Introductions section / Re: New to the Community
July 25, 2018, 05:26:58 PM
Welcome to the forum from Texas!  It's the only forum to get helpful feedback instead of R51 bashing.
#149
R51 General Discussion / Re: R51 Magazine lips
July 25, 2018, 05:21:39 PM
Quote from: sawatis on July 25, 2018, 04:12:02 PM
Well I had installed aftermarket Glock springs with a heavier wire...supposed to be a 15% or so increase... I lopped off one coil as the were way too tight and these work good.  Now the new mags the folks at Remington sent me have 13 coils...and these have run without a hitch
John
I was thinking of ordering a +5% Wolff spring designed to fit a 7 round Kahr 9mm mag.  I don't know if the coils will fit in the R51 mag though.
#150
R51 General Discussion / Re: R51 Magazine lips
July 25, 2018, 01:05:47 PM
Quote from: David on July 11, 2018, 11:40:08 PM
This in the comments section of the hrfunk video on the R51 https://www.youtube.com/watch?v=r4HUNEfr-j0&feature=youtu.be
by user Big10.  Re-posted because what we have been hearing from Remington and others is to remove a coil from the spring.  The following discussion seems to make sense and suggests the spring isn't strong enough. 
----
cut/paste follows:

Big10

The problem is NOT that the mag springs are too strong. The symptoms your gun is showing is often too WEAK of a magazine spring. The round is escaping the control of the magazine under recoil (inertia of the round tries to keep the round in the same position -- an object at rest tends to stay at rest) while the gun and magazine are moving backwards. But the pressure of the spring is too WEAK to hold the round in the magazine. When the the round pops free of the mag, it will be IN FRONT of the extractor hook. The next round below comes up to the top of magazine, pushes the escaped round up into the path of the slide on return, causing the bind between slide, round, and barrel . This is true for both the "weird horizontal pinched round" and the "stove piped" round. if you remove a round or two from the mag, it won't have the problem since the spring has less weight of the rounds to push up, keeping sufficient pressure on the top round.


Three points: (1) were any of these jammed rounds UNDER the extractor when you looked? I'm guessing "no". And if so, then they were released from the magazine BEFORE the disconnector rail of the slide pushed the round out of the magazine. (2) If you download the magazine, does it ever jam like this? A downloaded magazine is often used to prevent jams when magazine springs are weak (think Viet Nam and M16 -- 18 rounds vs 20 rounds.) (3) The old axiom: first round or last round of a magazine that jams a gun is a weak magazine spring issue; the fix is to install a stronger spring! Want to reproduce the issue in another gun? Got a 1911? disassemble the mag and cut a couple of coils from the mag spring. Reassemble and watch the same jams magically appear. Quod Erat Demostrandum.

Has anyone tried a stronger mag spring to test this?