first 9mm plated test

[forestswin]

You know, you 're right. I thought I could deduce the bullet length by the diagrams in the upper corner of the pages but that's only for the dimensions of the cases.

I suppose I'll have to keep assuming that a plated HP 124gr. is "close enough" to a jacketed HP 124gr. length-wise to work up my loads from about the same starting point.

Mea Culpa

Bluejax
Just measure the bullets with your caliper and use case length from the book or SAMMI diagrams

 

[Nevada Ed]

I was messing around with what I thought was enough case support for the little 115gr RN plated bullet.

Looked up the thickness of a dime: .053 .....penny .061 and nickel .076".

Figured the minimum is 3 dimes at +/- .16" and good support with 3 pennies at .18" +/-. Just for kicks the 38 special 125gr Speer Gold Dot will work with 3 nickels at .228" w/crimp.

A 115gr 9mm with 2 nickels at .152" does not look like enough support for the "Ball type" at 1.15 oal. so 1.14" oal will be my maximum length for this bullet..... 1.12" has plenty of support at .18" of bullet base inside the case.

I will be loading some maximum 9mm standard loads soon and post what the 1.14" oal length turns out. Son-in-law has five light target loads to put on paper that I gave him at Christmas in 115 and 124gr RN. Will post pictures when I get the target back.

later.

 

[fla_gun]

You know, you 're right. I thought I could deduce the bullet length by the diagrams in the upper corner of the pages but that's only for the dimensions of the cases.

I suppose I'll have to keep assuming that a plated HP 124gr. is "close enough" to a jacketed HP 124gr. length-wise to work up my loads from about the same starting point.

Mea Culpa

Or just ask someone with Quick load and they could tell you.
That's what I did for a lng time before my source told me to get my own copy.

 

[NevadaBob]

Nevada Ed...Were you shooting out off of Lemmon Valley & Chickadee on BLM property? The description of the road with snow sounds like it. I go out there on Saturdays. I just got a chrono and will be trying that out soon.

 

[blujax01]

Bluejax
Just measure the bullets with your caliper and use case length from the book or SAMMI diagrams

Sure, that'll work and has been a standard way to calculate bullet seating depth for many years. But the debate here seems to be centering around the difference the thickness of the plating makes in the overall scheme of things.

Actually, it's a non-starter as far as how things really work on my bench as opposed to theory. (And I like do Ed's "Spare Change" gauges!). But it's a fun discussion anyway.

 

[SuperMan]

To find your max LOA several things need to be considered...

1) Magazine length maximum

2) Ojive maximum

3) Amount of bullet shank needed in the case to keep the bullet from bending out of line during feeding

4) Ejection port opening

#1 is easy...most 9mm magazines are within a couple of thousandths so most any commercial 9mm ammo will work.

#2 To find this length take the barrel out of the handgun and put a bullet into a case with just enough of the shank in the case to hold it in place. Make sure that the case mouth bell has been smoothed out then drop the round down into the chamber. More than likely with most bullets the base of the case will stick up above the barrel hood. Now keep seating the bullet deeper and deeper till the base of the case is even with the barrel hood. Now your round should be properly headspaced on the case mouth. You will need to shorten the round a couple of thousands to make sure all bullets clear the rifling.

Now the question becomes if this is the max length for this bullet barrel combination, does it exceed the max length of the magazine. If it does than this length is moot and one then will have to shorten the round so this particular bullet will fit into the magazine.

#3 Now that you have #1 and #2 lengths determined will the bullet nose stay centered when worked through the action. With the slide back and loaded magazine in drop the side and then carefully pull the slide back to get the round out. This will also answer #4.... If the complete round will not eject from the ejection port then it will have to be shortened. If it will then examine the round to see if the bullet stayed centered in the case....

All 9mm 125 grain JHPs are not the same. A Sierra has a very long shank and sharp ojive. Load it to the same max LOA as a Hornady XTP and you will have a bullet stuck into the rifling....

Bob

 

[Nevada Ed]

Superman.......thanks, logged that info.

Bob;
He shoots north of Golden Valley, where they live.
Signs posted to the off road area used for lots of outdoor things.
Just have to find a place that looks and feels safe from the other shooters.

Was that a "Ricochet" ?? !!

 

[NevadaBob]

Nevada Ed...Sounds like the same spot. I love the rugged road, ruts and all. Most cars wouldn't dare go out there.

 

[mscampbell2734]

Just be aware not all plated bullets are created equal. Some WILL fly apart if driven too hard. I've scored IDPA cardboard targets and found strips of plating material embedded in the cardboard because the bullet was driven too hard and the plating came off.

 

[Nevada Ed]

OAL with spare change.

Here is a picture of a 115gr 9mm ..........
and a fired 125gr 38 spl...........

With my dimes, pennies and nickels....
as mentioned dime: .053, penny: .061, nickel: .076"
that comes to .159" ( .16 ) , .183" and , .228" on the .38 cal.

 

[vbguns072]

What was the recipe for the Bullseye?