underwood penetrator voluntary recall

[Texashogman]

so has anyone posted this yet??? I searched and could not find it here if it has been
G20, LW barrel, underwood extreme penetrator factory ammo

this is NOT a dig on glocks, or Lone wolf, or underwood--- this is to let people know that there may have been a QC error on the penetrator bullet where it was undersized -thus allowing bullet setback and over pressure of ammo

the article states that underwood has a voluntary recall if anyone has this older ammo you might check with underwood for LOT# issues
here is the article: http://www.thetruthaboutguns.com/2017/01/jeremy-s/rip-glock-20-kaboom/

this has always been in the back of my mind with solid copper projectiles --- lehigh, barnes, COP, and CE --- since they are all sized at .400, not .401" --- if there were ever any under-sized  at .399or .398" you could have the same issue with your own personal reloads --- make sure you check the diameter is you have any bullets for reloading--- I bought 250 of the black barnes tac-xp pulls about 6 months ago and now am going to go check the diameter on all of them to make sure as there was obviously an issue as to why they were pulls

[The_Shadow]

Yes the very UW round I did the pull down on showed small with my crude instruments @ 0.3995" at the upper most part od the bullet which may have been bumped larger from the crimp action.  The 4 power bands / 3 grooves 0.3645" as part of the bullet design to reduce frictional surface area.  I didn't write it down in the documentations but I think the lower bands were 0.3990".

http://10mm-firearms.com/factory-10mm-ammo-pull-downs/underwood-115gr-lehigh-defense-xtreme-penetrator-12092015/msg51673/#msg51673

[Texashogman]

well, bad news for me--- be warned !!!!! if you bought any "barnes black all copper plated bullets" from americanreloading.com you may have undersized bullets

I recently purchased 250 of the "barnes black" pulls in 40 caliber that are the 140grain barnes tac-xp bullets from American reloading

I measured them after I read the above article and guess what---!!!!! see my picture below

how small is too small?

for reference, I have  2 boxes of factory loaded Barnes 140grain tac-xp in 40S&W-- so I pulled one and measured it too, the factory bullet measures .399-.3995" just below the ogive, and .398" at the base --

[The_Shadow]

Yep, mine measure 0.3990" / 0.3995" / 0.4000" in the sample I weighed.  The good thing is they are long bodied and if your cases are sized well, then they may not pose a problem with the surface area of the Barnes bullets.

Another thing is you can add sealant to help them stay in place.

[Texashogman]

They drop freely into a sized, belled case about 1/2 way, then start to have some slight resistance near the ogive. I'm thinking the Lee fcd might be the ticket for these bullets as it applies a true taper crimp...as long as it doesn't undersize the mouth so it still properly headspaces --- just gotta pay special attention to them when loading

[The_Shadow]

My RCBS die does a good job of sizing the casing near the case mouth area and the expander plug still leaves the casings with great neck tension.  I am constantly checking my rounds to see if the bullets will spin inside or push or pull...

Be careful with the LEE FCD, I found it to leave some bullets loose when they were resized by the carbide ring as they were fitted in the casing. 

[Texashogman]

K, I'll watch for the fcd...my other crimp dies have a "ridge" And if you try to crimp too hard it will buckle the case so I thought the fcd might be a better option for undersized bullets.

I could not get the pulled tac-xp bullets to group worth a darn in my 40, maybe the undersize bullets are the culprit --- they grouped ok but not great from my 10mm