Feeding issues

[Ibgreen]

Howdy all.  I have installed an s&s block and replacement follower in my 1868NM rifle.  Got hold of some ten-x 56-50 rounds to check cycling and firing (not expecting much accuracy due to my need of a .517 diameter).  If I put a single round in the magazine, it feeds smooth as butter.  With additional rounds following it locks up.  I have not altered the S&S block in any manner.  (they do claim that it will work in ninty something percent of originals 

[Eggman]

On first blush I would focus on overall cartridge length. It should be 1.65" or slightly less. Check out Tony Beck's article in the frequently asked questions section.

[Herbert]

Also check to see if the block is cutting into the lead of the following bullet,if it is ,take the block out and polish a small radeious on the top leading edge of the block,this will oftern fix the problem if the OAL is OK

[Ibgreen]

Well, the ammo mic's out to 1.51".  I guess that is my issue.  Just for giggles, I will re-install my original rim fire block and see if it feeds.  If so, I will compare the two and adjust as needed.

[Herbert]

Well, the ammo mic's out to 1.51".  I guess that is my issue.  Just for giggles, I will re-install my original rim fire block and see if it feeds.  If so, I will compare the two and adjust as needed.

That is allways the best method

[Ibgreen]

Well just finished up final cleaning  after shooting the rifle.  Used it as a 2 shot due to the unresolved feeding issues.  Tonight I reinstalled my original block and checked for cycling.  The old block handled a seven round magazine of the 1.5" ten-x ammo like butter.  I could not believe how easily it threw rounds into the chamber.  I unfortunately have a extended date with a rotary tool.   .