This was a new gun and first time shooting it.  Weather was bad so while I waited I read about the various issues.  The only thing I found were the burrs.  So far so good.

Quote from: Zenshot on November 18, 2018, 06:12:12 PM
What did you use to polish the front of the magazine?

I shot my R51 for the first time today after polishing the tab at the front of the magazines.  Four magazines of  115gr Remington ball and four magazines of  124gr Remington ball fired without a hiccup. Hardly a test but I didn't have any of the nose dives that most reported in the first few mags full.

I used a small stone to break the edge and then polished it with a small felt Demel polishing tip and the polishing compound that came with the Demel kit.  I only polished the lower edge of the tab at the front.  Now the bullet tip slides right across the tab without snagging.  I'll update when I try it.

My new R51 is fairly recent (Huntsville H0073xxR51) so I just checked the magazine lips.  The first was .340 at the rear and .336 at the front.  The second was .337 rear and .332 front.  They are very nearly parallel so I'm hoping to have good results.  I haven't shot it yet but hope to tomorrow and will post my results.  The tab on the front would scratch the bullet nose and cause the second round to hang up.  I polished them without changing the shape and now they never hang up.  I will be using Remington 115gr and 124gr ball ammo.

After accumulating a number of early 20th century Remington long guns and a Model 51 I just had to have a R51.