.380 RNFP reload help

[Sandspider500]

I don't load .380, but I did look at my 180 gr .40 s&w and 225 gr .45acp projectiles. These are both truncated cone bullets.

Both are approx .618 in length, if I tried this "2/3" seating depth there would be no cylindrical bearing surface at the case mouth. Since I use the lee fact crimp die to put a very slight roll into the crimp, this won't work for me. Not even sure if
it would feed with the rim of the case mouth exposed so to speak.

I'll stick with published safe oal data and leave the 2/3 technique to quick-load practitioners.

"2/3" .298 seating depth for your 45 cal bullet and a .264 seating depth for your 40 cal sounds about right to me.

[ar15barrels]

Yeah, with these little stubby bullets, the 2/3 rule probably does not work.
Quickload defaults to the MAX cartridge length and when I saw only 0.169" of bullet being seated into the case, I just dropped the depth down another 1/10" to be more like I am used to seeing with my roundnose 125's and 147's.
I don't load such lightweight bullets in any of my 9mm or 38 super so I didn't think about how short those little 100gr flatnose bullets actually are.

[sofbak]

snip.....
so I didn't think about how short those little 100gr flatnose bullets actually are.

I'll just leave this here..

snip.....

Perhaps think a little more about the process before asking questions that highlight how little you have thought about the process next time.

[ar15barrels]

Just curious what would the numbers be on Quickload if you used suggested OAL of .955 ?

Cartridge          : .380 Auto (9mm Kurz)
Bullet             : .355, 100, LEADEx FN 18C000921C FPRS
Useable Case Capaci: 7.491 grain H2O = 0.486 cm³
Cartridge O.A.L. L6: 0.950 inch = 24.13 mm
Barrel Length      : 3.8 inch = 96.5 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 18500 psi, or 127 MPa
or a maximum loading ratio or filling of 102 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

Powder type          Filling/Loading Ratio  Charge    Charge   Vel. Prop.Burnt P max  P muzz  B_Time
                                      %     Grains    Gramm   fps     %       psi     psi    ms
---------------------------------  -----------------------------------------------------------------
Vihtavuori N330                     89.5      4.0     0.26    1036    94.8    18500    3943   0.479  ! Near Maximum !
Alliant UNIQUE                      94.7      4.2     0.27    1029    85.8    18500    4121   0.492  ! Near Maximum !
Hodgdon Universal                   86.8      3.8     0.25    1021    94.2    18500    3908   0.498  ! Near Maximum !
Alliant POWER PISTOL                93.4      5.1     0.33    1021    65.8    18500    4153   0.483  ! Near Maximum !
Vihtavuori 3N37                     96.4      5.1     0.33    1018    75.8    18500    4002   0.481  ! Near Maximum !
Vihtavuori N320                     84.4      3.4     0.22    1008    99.2    18500    3461   0.488  ! Near Maximum !
Vihtavuori N350                     99.0      5.0     0.32    1007    75.7    18500    3860   0.481  ! Near Maximum !
Alliant BULLSEYE                    77.9      3.6     0.23    1006    86.6    18500    3790   0.485  ! Near Maximum !
Ramshot Silhouette                  75.8      4.6     0.29    1003    82.1    18500    3792   0.486  ! Near Maximum !
Winchester WAP                      76.0      4.6     0.30    1002    81.6    18500    3776   0.486  ! Near Maximum !
Vihtavuori N340                     91.0      4.2     0.27    1000    85.8    18500    3697   0.488  ! Near Maximum !
Accurate No.7                       93.4      6.9     0.45     999    53.5    18500    3943   0.482  ! Near Maximum !
Hodgdon Longshot                    71.8      5.0     0.32     995    75.2    18500    3737   0.488  ! Near Maximum !
Winchester 540                      70.0      5.0     0.32     994    75.5    18500    3734   0.488  ! Near Maximum !
Ramshot True Blue                   71.1      5.0     0.32     994    75.3    18500    3729   0.488  ! Near Maximum !
Accurate Solo 1250                  90.6      3.7     0.24     993    92.9    18500    3502   0.488  ! Near Maximum !
Accurate No.5                       69.2      4.9     0.32     993    69.6    18500    3775   0.487  ! Near Maximum !
Hodgdon HS-6                        76.0      5.2     0.34     993    72.5    18500    3738   0.488  ! Near Maximum !
Alliant GREEN DOT                   85.4      3.3     0.21     989    98.5    18500    3392   0.501  ! Near Maximum !
Winchester 231                      70.8      3.7     0.24     988    94.5    18500    3450   0.492  ! Near Maximum !
Ramshot Zip                         63.6      3.7     0.24     988    94.5    18500    3450   0.492  ! Near Maximum !
Hodgdon HP38                        62.6      3.6     0.23     985    95.3    18500    3398   0.492  ! Near Maximum !
Alliant RED DOT                     86.1      3.0     0.19     982   100.0    18500    3164   0.502  ! Near Maximum !
NitroKemia REX 1/Red/28            102.0      3.8     0.24     979    92.4    18006    3389   0.490  ! Near Maximum !
Alliant HERCO                      102.0      4.4     0.29     976    78.6    16266    3868   0.525
Accurate Nitro 100                  80.2      2.9     0.19     972    98.2    18500    3192   0.493  ! Near Maximum !
Hodgdon TiteGroup                   56.6      3.2     0.21     968    99.5    18500    3065   0.498  ! Near Maximum !

[ar15barrels]

I'll just leave this here..

[sofbak]

^^^ And to you as well.

[BajaJames83]

youll be fine using the starting load for the FMJ for those bullets.

[STEWMAN]

3.2 HP38 @ .965 is what I use. Works in every .380 gun I have.