Seater plug for RMR's 9mm 124 Gr. Truncated Cone Flat Point

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Would you all please tell me what the minimum length of the 9mm Luger brass you all allow for reloading is. For example in one of the reloading manuals they show 0.754 as maximum and 0.744 as minimum. So, I'm assuming, if the case is less than 0.744, these should be in the trash although in another manual they specified 0.749 as the minimum. Anyway, would sure like to hear your thoughts or suggestions on this.

Thanks very much.
 
Just my opinion as a reloader who is still fairly new in number of years compared to many but I've reloaded well over 100k since I started...woohoo... big deal... lol... yeah, I know... :)

For general range blasting and action pistol shooting nobody I know who reloads 9mm is concerned with the OAL of the brass.
If you have some ultimate accuracy goals then maybe this post doesn't apply but that isn't my game.

I've never measured it and don't know anybody who does. Pick it up off the ground, clean it, check it, load it.

The cartridge OAL and the case mouth dimensions (belling, crimp) are where you put your time and energy.

Can brass OAL affect those? Yes but not so much that it is worth worrying about unless you have some special situation or are total OCD.
 
Installed my new Lee 9mm Deluxe Carbide 4-Die set in my Lyman T-Mag II turret press yesterday and did my first load of ten rounds of RMR 124 gr JHP MPR bullets (used OAL of 1.050"). As I resized a case that had been previously sized with my replaced manufacture's TC die, which had been installed as per their instructions, I got a different result. The following photos will explain. The first photo shows the case that had been sized before resizing with the Lee TC sizing die and then the second photo after resizing with the Lee die, which brought the case into spec. Interesting. I'm beginning to wonder if the elastic lock ring is what allows such a close fit of the die to shell holder. I like how all the dies setup. Anyway, finished up the set and will now wait to get to the range, rain, rain, and test before proceeding.


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I am happy with my Lee 9mm dies. (and all my Lee dies for that matter) I use the Lee FCD for 9mm, (some people hate it but it works well for me. the Lee FCD tends to be a like/hate thing not much middle ground on it.)
I usually use the Lee sizer, Hornady seater taper crimp die followed up by the Lee FCD.
If I am using a different bullet than the MPR I will use my Lee seater which works fine so I don't change my MPR adjustment.


Hope the MPRs work out well for you.
 
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ddc said:
OAL of the brass ... I've never measured it and don't know anybody who does.
Click to expand...
If you are loading to your barrel's max OAL/COL, length of brass can have an impact.

Since semi-auto cases headspace on case mouth, if you determined the max OAL (The plunk test) using a longer resized case, reloading with shorter resized cases could allow more bullet nose/bearing surface to stick above the case mouth and possibly contact the start of rifling if extractor can't hold back the case rim enough.

Due to this, for barrels with shorter leade and/or bullets that produce working OAL same or very close to max OAL, I will measure a sample of resized brass and use shorter length cases to determine max/working OAL or subtract a few thousandths to compensate for resized case length variance. But if the working OAL (length that will reliably feed and chamber from the magazine) is shorter than max OAL and if this difference is more than the variance of resized case lengths, then this is not an issue.

For 9mm FMJ/RN, most reloaders use working OAL significantly shorter than SAAMI max of 1.169" (like around 1.100" to 1.150") and resized case length variance is not an issue.
 
Has me thinking about adding a full size 9 x 19 to the inventory.
Click to expand...

A 1911 in 9mm is just a lot of fun, Really happy with my Springfield "Loaded" 1911.
I can only have max 10 rnd mags in CA for anything so no difference in the rounds I can have between my 1911, my XD or my P226.
Not sure but I think Walkalong would agree with me that a 1911 in 9mm is just loads of fun, of course some of the 1911 guys may cry Blasphemy if it's not a .45:) (yes I have a ,45 as well)

HP38/W231 worked ok for me in 9mm but my 9mms seem to prefer other powders. (WSF is a current favorite, initial tests with Sport pistol look promising, but I don't know that I will switch, I prefer the feel of the slower powder a bit better)

Please let us know how the MPRs and the Lee dies work out for you.
Well I hope:)
 
PS-Between my Lee sizer and the Hornady the Lee sizes cases tighter so I use it.

(oppss fixed typo):oops:
 
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Dudedog said:
A 1911 in 9mm is just a lot of fun, Really happy with my Springfield "Loaded" 1911.
I can only have max 10 rnd mags in CA for anything so no difference in the rounds I can have between my 1911, my XD or my P226.
Not sure but I think Walkalong would agree with me that a 1911 in 9mm is just loads of fun, of course some of the 1911 guys may cry Blasphemy if it's not a .45:) (yes I have a ,45 as well)

HP38/W231 worked ok for me in 9mm but my 9mms seem to prefer other powders. (WSF is a current favorite, initial tests with Sport pistol look promising, but I don't know that I will switch, I prefer the feel of the slower powder a bit better)

Please let us know how the MPRs and the Lee dies work out for you.
Well I hope:)
Click to expand...

Well, I've started trying to put together a short list of 9 x 19s that I think I could swing and enjoy. Interesting that you mention a 1911 as recently the Colt Competition Government 9mm 9+1 5in SS started getting my attention. For many years and still to this day I think the 1911 is the best looking semi-auto ever designed. I once owned a Gold Cup in 45 ACP. Miss it!

A buddy and I make a trip to a target shop a couple of hours away along about this time of year to pickup supplies. One of the things I put on the list is Sport Pistol which they stock. :) May have to add WSF to the list also.
Thanks for the data.

Dudedog said:
PS-Between my Lee sizer and the Hornady the Lee sizers the Lee sizes cases tighter so I use it.
Click to expand...

Interesting as the Lee Sizer sizes the cases tighter than my Lyman sizer in my other 9mm die setup.
 
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Interesting that the Lee is tighter than the Lyman as well,
so tighter than Lyman and Hornady. (at least in our small sample)

I do like my XD and P226 but I like the 1911 better!
 
Dudedog said:
Interesting that the Lee is tighter than the Lyman as well,
so tighter than Lyman and Hornady. (at least in our small sample)

I do like my XD and P226 but I like the 1911 better!
Click to expand...

I've heard that Lee sizes farther down the case than some others.

Has anybody done any testing in that area?
 
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Haven't decided if I like the Small mag well or not yet, factory grips are a bit nicer but the mag well hangs on the bottom grip screw so requires taking some material off the inside of grip so I used some inexpensive Mag Pulls for testing.
(Which are good for inexpensive grips IMO)
Camera flash messed up the pic a bit

Could get a better one in the daylight.
Only changes are the grip and magwell otherwise as it came from Springfield.
 
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Has anybody done any testing in that area?
Click to expand...

I can say that both the ones I own are tighter than my Hornady which went back to Hornady because it was not tight enough when new.
Hornady "fixed"/replaced it and it is tighter than before but still not as tight as either of the sizers in the two Lee 9mm sets I have.
(one for the LNL and one for my old 3 hole Lee turret, I do really like my Hornady LNL)

I suppose I should really measure some cases and get numbers but I never really cared about the #s, the Lees are tighter and I prefer them.
 
Dudedog said:
Haven't decided if I like the Small mag well or not yet, factory grips are a bit nicer but the mag well hangs on the bottom grip screw so requires taking some material off the inside of grip so I used some inexpensive Mag Pulls for testing.
(Which are good for inexpensive grips IMO)
Camera flash messed up the pic a bit

Could get a better one in the daylight.
Only changes are the grip and magwell otherwise as it came from Springfield.
Click to expand...

Is that a Bomar adjustable rear sight?

Well, surfed around and started checking on the
Springfield Range Officer M1911s
Line. Think my head has been turned.
 
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Sight says Springfield Armory, but yes it is adjustable.
Front and rear are standard Dovetail cuts, asked Springfield what flavor but I forget what flavor, but I have it someplace.
Mine has the two piece guide rod, don't know if it makes a difference or not, but haven't changed it, slight pain since you need the wrench to field strip it.
I believe the new ones come with a fiber optic front. Some have the two piece rod some just a normal one.
Mine just came with a black front (which has a dab of orange paint on it), been meaning to change it to a FO front but just haven't got around to it yet.
Factory Mags are 9 rnds. (it came with two mags, mag holder, case, holster which isn't bad, still using it for USPSA and the case, oh and a cleaning brush/manual)
I would say the trigger out of the box on mine is excellent. Good even enough that I haven't changed it.

Line up has changed since I bought mine but PI9122L Range Officer looks really close to what I have.
Not a bargin 1911 but not an expensive one either.
Of course Springfield's custom shop will help you spend more money if you have the urge to.
I think the # on mine was PI9124L but would need to double check.

PS Currently using Brownells 10 rnd mags, they work great and have base plates.
No exact # but probably 20K+ rounds on mine.
 
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Decided that Monday morning I'll start my local search. I think now's the time not to dally on such an important matter. My first stop will be to a dealer that I have done business with before and will order one for me if his distributor has the item in stock. A good chap and reasonable. The last item was a 28 gauge O/U that he had for me in a week. That's my primary Sporting Clays piece. Love it. :)

Hang on I'm in error. Working on an update.
 

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OK, here's the correction. It is the PI9122L model. Man, that wee brain of mine tried to step on me. When you mentioned the FO front sight the little man in there said you're missing something OM. o_O So yes, it looks like yours. Fingers still crossed for success. :)

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