Plunk test question

[jimlj]

I loaded a few Lee 358-125-RF powder coated boolits that plunk great in a Ruger SR9 and a Taurus 709 barrel, but lack just a bit of plunking in a AR-9 barrel. If I let the bolt spring forward they chamber fine, but you have to pull harder on the handle than a factory round to get them out. Would I be ok to shoot them, or do I need to have the barrel throat reamed?

I suppose I could seat the boolit about .001 deeper and I'll bet they would plunk fine. I plunked them in the Ruger barrel thinking they would be fine in the AR barrel. Lesson learned.

I have them loaded light based on information on cast boolits in my Lyman manual.

[Der Gebirgsjager]

I suppose I could seat the boolit about .001 deeper and I'll bet they would plunk fine.

Seems like the correct, and practical answer to me.

DG

[Bazoo]

Might try a bit more crimp. I've run tight rounds like that through a couple guns with no issues, only cause I had a few from my die backing off a bit or from when I was adjusting it. Though, it wasn't in a 9mm.

[jimlj]

Looks like I need to learn how to spell "Test".
Any way to edit the title of the thread?

[Bazoo]

Only a mod can edit the title.

[Walks]

Maybe a bit of Taper Crimp ?

[Winger Ed.]

Draw all over a problem child with a sharpie, see where they drag at, then go from there.

[onelight]

You can seat deeper and back up on your powder charge and work up again.
Rework your barrel so it will accept that bullet at that OAL
Or go to this style mold or a TC mold . http://www.accuratemolds.com/bullet_...bullet=35-128N

[DougGuy]

I would not shoot them because if they are hard to chamber, what are the chances you may get some boolit setback? Pretty good I would say, so any amount of setback = pressures can skyrocket unpredictably.

[mehavey]

Before you do anything, what is the case mouth diameter as currently loaded ?

[onelight]

Yup what walks , winger Ed and mehavey said . Check the easy free stuff first

[Rcmaveric]

I would definitely just seat deeper and run them through a factory crimp die. I have noticed newer more extensive fire arms tend to have a tighter chamber spec.

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[mehavey]

I would definitely just seat deeper and run them through a factory crimp die.

Again, before the OP does anything to the rounds
What is the current/as-loaded mouth diameter ?

[Der Gebirgsjager]

I changed it for you.

DG

[mdi]

I don't mind reloading to fit a particular gun, but I would never alter a gun to fit a particular load. You have two guns that accept the load, and one that doesn't so why not just make up loads that fit them all? I would (and have done) seat the bullets a bit deeper (unless you have to go .015" deeper). I have 4, 9mm pistols and recently bought a Masada that has a slightly "shorter" chamber. The "standard" loads for my 9mms don't plunk in the Masada as well as I like, so I shortened my standard OAL to fit the Masada ands it has changed nothing for the other 3 pistols; accuracy, velocity, and functioning.

(just my opinion; I don't crimp, add any crimp, or measure any crimp for any semi-auto handloads and have produced many thousand semi-auto rounds that function 100% in 9 semi-auto pistol caliber guns. 32ACP to 45 ACP)...

[dverna]

I loaded a few Lee 358-125-RF powder coated boolits that plunk great in a Ruger SR9 and a Taurus 709 barrel, but lack just a bit of plunking in a AR-9 barrel. If I let the bolt spring forward they chamber fine, but you have to pull harder on the handle than a factory round to get them out. Would I be ok to shoot them, or do I need to have the barrel throat reamed?

I suppose I could seat the boolit about .001 deeper and I'll bet they would plunk fine. I plunked them in the Ruger barrel thinking they would be fine in the AR barrel. Lesson learned.

I have them loaded light based on information on cast boolits in my Lyman manual.

I doubt .001” deeper is even measurable. Unless you are near max, seat .010 deeper and KISS.

[mehavey]

Again....

There are two ammunition things that affect semi-auto "plunk"

#1 One is case dimension at/near the mouth.
#2 The other is bullet seating depth/shoulder/ogive protrusion beyond that case mouth.

Until you've checked #1, don't bother playing with #2.

[gwpercle]

It's OK to shoot them in the AR ... the only problem would be an unfired round ... if you try to extract it and the boolit sticks in the barrel/throat ... then you have a case full of powder dumped in the action and a boolit lodged in the bore .
Be careful and bring a range rod !
Gary

[mehavey]

I'm very leery of gas-gun setups where the bolt cannot fall freely into battery,
and no less freely extract that same loaded round.

Has the OP yet replied to the question of case mouth dimension ?

[Greg S]

Are you post sizing after powder coat and are you over crimping expanding the front of the bullet? As Winger said. Measure pre/post powder coat and loaded?