10mm brass check for pressure signs

[243winxb]

2018 i copied this- Kahr>"Primer wipe" is a teardrop-shaped firing pin impression, accompanied by a drag mark (scratch or gouge) following the "point" of the teardrop and leading away from the primer, sometimes into the brass. This is because the firing pin does not fully retract after the round has fired and the slide is traveling back during ejection, causing the case to drag across the firing pin as it is thrown clear. It is not in any way harmful, except sometimes to the case if the primer pocket edge is gouged. Kahr will tell you it is a normal condition for their pistols, even saying so in the owner's manual.

 

[KYregular]

2018 i copied this- Kahr>"Primer wipe" is a teardrop-shaped firing pin impression, accompanied by a drag mark (scratch or gouge) following the "point" of the teardrop and leading away from the primer, sometimes into the brass. This is because the firing pin does not fully retract after the round has fired and the slide is traveling back during ejection, causing the case to drag across the firing pin as it is thrown clear. It is not in any way harmful, except sometimes to the case if the primer pocket edge is gouged. Kahr will tell you it is a normal condition for their pistols, even saying so in the owner's manual.

that's kinda my impression, what you said coupled with the fact that the barrel is at an angle slightly during the cycle.

 

[Blue68f100]

Normally caused by the slide unlocking too early. On 1911's there are several things that can be done to slow it down. The most effective is a square bottom FP retainer.

 

[e3mrk1]

Those aren’t bad.

Speaking of Glocksmiles, here’s a signs of unsupported Chamber. They shoot fine in my G40, XDM Elite, S&W M&P 2.0 but not in my FN 510.

I bought the Lee Bulge Buster to fix that problem.

 

[Lennyjoe]

I bought the Lee Bulge Buster to fix that problem.

Yep I have one as well. But, the FN barrel doesn’t have enough support for the 800X loads so they’ll stay away from it.

 

[sparkyv]

These are typical flattened primers in some medium-spicy 10mm Longshot loads, but you won't find any primer swipes on these!

 

[KYregular]

These are typical flattened primers in some medium-spicy 10mm Longshot loads, but you won't find any primer swipes on these!
View attachment 1174414

primer swipe an overrated indicator, the weakest factory loads from my gun even have a little swipe

 

[GooseGestapo]

Try switching primers.
A harder primer may reduce primer flow.