9mm bullet setback

[LiveLife]

I have loaded XTP and HAP bullets and based on my limited experience with them so far using mixed range brass reloaded 5-10 times, I am not experiencing significant bullet setback (FYI, I am using Lee dies).

Of course, RN profile bullets will feed better than HP/FP bullets and likely experience less bullet setback but I am experiencing minimal to no measurable bullet setback with Berry's, RMR etc. plated bullets whether the bullet profile is RN/FP/HP.

Thanks to Duvel and other THR members (and a generous/understanding wife who allowed me to order several hundred dollars worth of bullets), I have a comprehensive collection of FMJ/JHP and plated bullets in 115-147 gr for the plated mythbusting thread and I can test bullet setback as part of the thread testing along with chrono data and accuracy from machine rest - https://www.thehighroad.org/index.p...ng-at-25-50-yards.808446/page-2#post-10346110

 

[Blue68f100]

If your running into setback problems you need to separate the brass out by mfg. RP is know to be thinner and softer which will give you less neck tension. RP brass is good for shooting lead since it's normally 0.001"-0.002" oversized.

 

[Reefinmike]

I wish this site would inform that someone has posted before hitting the send button.

It tells me! a little window pops up above the text box stating that there have been posters since I started to reply. maybe it doesnt pop up in the quick reply at the bottom of the page?

I dont measure my semi auto pistol cases but I have handled enough brass to know that consistent gives you consistent results. You get a much better feel with all one headstamp of brass. for 9mm, I like rp brass because it is thin. With my lee sizer it gives plenty of neck tension for .355" plated bullets but it also has enough room to accommodate .358" lead boolits without swaging down the bullet or giving a bad bulge in the case. rifle brass is all LC and magnum revolver brass is all starline.

 

[Reeferman]

Before I forget I hope everyone has a very Merry Christmas and Happy New Year.

 

[Reeferman]

If your running into setback problems you need to separate the brass out by mfg. RP is know to be thinner and softer which will give you less neck tension. RP brass is good for shooting lead since it's normally 0.001"-0.002" oversized.

Majority of brass is Federal, Blazer and Winchester.

 

[Dudedog]

Reefer = refrig trailer

With a 124/147 gr more of the bullet is in the case so that tends to help.
For 9mm, I don't trim cases, heck I don't even measure them, just load, shoot, repeat until
the case neck splits
the primer pocket gets loose
or they get lost.
I work up a good load and then I need to do my part.
Would new same head stamp trimmed brass help, most likely but not a big difference for my use, I was shooting Bullseye then it would be a different story.
(of course this way I can way I can always blame the pulled shots on the mixed range brass)

 

[LiveLife]

That's right, blame the "pulled shots" on the mixed brass ...

Which means I HAVE to keep using mixed brass to explain flyers on my targets ...

 

[Dudedog]

Ooppss did I say pulled shots, I meant flyers

Happy New Year to everybody!

 

[Reeferman]

Update on this issue. I finally got the Lee Undersize die today along with a factory crimp die. I loaded 6 dummy rounds using the Federal brass that gave so much trouble. Cycled them through my 1911 six times and had NO setback on two and four that setback .003"
Needless to say I'm pretty happy with the results.

 

[LiveLife]

Great! I love happy endings.

BTW, I have found Lee sizing dies for 9mm and 40S&W to size brass with smaller OD further down the case.

 

[Reeferman]

Great! I love happy endings.

BTW, I have found Lee sizing dies for 9mm and 40S&W to size brass with smaller OD further down the case.

Did you find this an issue? I checked them with Lyman gauge and got the kerplunk when dropping in my barrel.

 

[LiveLife]

Not at all.

The smaller radius of the carbide ring opening sizing further down on the case helps with resizing, particularly brass fired in more generous chambers with less case base support that overly expands case base portion of brass.

Maybe that explains why I do not have to bulge bust my 40S&W brass as regular resizing die allows resized brass to fully chamber in all my barrels, including Lone Wolf barrels with tighter chamber.

 

[Reeferman]

I noticed not one of the cases touched the FCD bottom ring. Like I said I'm very happy that the Lee Undersize die worked. I have found several places up here that carry Lee stuff and will try out more. We just get bent over big time with our 70 cent dollar. Spent half my life working and visiting the US and it sure sucks looking at all the things that we can't bring into Canada because of ITAR.

 

[Reeferman]

Loaded and shot 200 rounds of mixed head stamp brass of Federal, Winchester, Blazer and RP with 4.5 grains of Win 231. Checked for any setback through out various times and had none and were as or more accurate than any of the commercial reloads or OEM. One thing that surprised me was this 1911 has always put the brass into my face most of the times with factory or commercial reloads but these loads put the brass at about the 2 or 3 o'clock straight out to the side. Not sure why that is but happy about it.
Again thanks to all that replied as I learned a lot about loading 9mm.