QL .240 Weatherby

[Rigbymauser]

I have loaded up a small batch of rounds for my .240Wea.

load is: 54,5 grain Norma MRP.
. 95 grain Barnes X bullet
. COL: 78,6mm
. FED 215 primer
. 26 " barrel

Anybody here who could run a QL to See what is says..Thanks...

 

[DrMike]

Cartridge          : .240 Weath. Mag.
Bullet             : .243, 95, Barnes 'X' S 24320
Useable Case Capaci: 58.008 grain H2O = 3.766 cm³
Cartridge O.A.L. L6: 3.094 inch = 78.60 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : Norma MRP

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   78    43.60   2795    1647   34033  10580     93.4    1.437
-18.0   80    44.69   2862    1728   36195  10889     94.6    1.405
-16.0   82    45.78   2929    1810   38512  11184     95.6    1.373
-14.0   84    46.87   2997    1894   40999  11464     96.5    1.342
-12.0   86    47.96   3064    1981   43667  11726     97.4    1.311
-10.0   88    49.05   3132    2069   46533  11968     98.1    1.281
-08.0   90    50.14   3199    2159   49612  12190     98.7    1.251
-06.0   92    51.23   3267    2251   52915  12390     99.2    1.221
-04.0   94    52.32   3334    2344   56425  12565     99.6    1.192  ! Near Maximum !
-02.0   96    53.41   3400    2439   60156  12716     99.8    1.164  ! Near Maximum !
+00.0   98    54.50   3467    2535   64143  12839    100.0    1.136  !DANGEROUS LOAD-DO NOT USE!
+02.0  100    55.59   3532    2632   68420  12938    100.0    1.107  !DANGEROUS LOAD-DO NOT USE!
+04.0  102    56.68   3598    2730   73011  13029    100.0    1.074  !DANGEROUS LOAD-DO NOT USE!
+06.0  104    57.77   3662    2829   77947  13115    100.0    1.043  !DANGEROUS LOAD-DO NOT USE!
+08.0  105    58.86   3727    2929   83257  13197    100.0    1.013  !DANGEROUS LOAD-DO NOT USE!
+10.0  107    59.95   3790    3031   88976  13274    100.0    0.984  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba     98    54.50   3611    2750   77275  12351    100.0    1.054  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     98    54.50   3256    2236   51375  12882     96.5    1.225

 

[DrMike]

Here's a follow-up that may be of interest to you:

Cartridge          : .240 Weath. Mag.
Bullet             : .243, 95, Barnes 'X' S 24320
Useable Case Capaci: 58.008 grain H2O = 3.766 cm³
Cartridge O.A.L. L6: 3.094 inch = 78.60 mm
Barrel Length      : 26.0 inch = 660.4 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 63000 psi, or 434 MPa
or a maximum loading ratio or filling of 107 %
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 !

30 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type          Filling/Loading Ratio  Charge    Charge   Vel. Prop.Burnt P max  P muzz  B_Time
                                      %     Grains    Gramm   fps     %       psi     psi    ms
---------------------------------  -----------------------------------------------------------------
Vihtavuori N570                    107.0     60.3     3.91    3467    95.2    60771   14278   1.150  ! Near Maximum !
Alliant Reloder-33                 107.0     62.9     4.07    3465    96.2    61710   14096   1.145  ! Near Maximum !
Alliant Reloder-25                 105.0     55.9     3.62    3456   100.0    63000   12299   1.133  ! Near Maximum !
Norma MRP                           97.1     54.2     3.51    3448   100.0    63000   12808   1.144  ! Near Maximum !
PB Clermont PCL 517                101.9     58.1     3.77    3447    99.2    63000   12933   1.133  ! Near Maximum !
Norma MRP 2                        107.0     57.2     3.71    3447    99.2    62964   13154   1.149  ! Near Maximum !
Bofors RP30                        107.0     57.2     3.71    3447    99.2    62964   13154   1.149  ! Near Maximum !
SNPE Vectan SP 12                  101.7     58.1     3.76    3446    99.3    63000   12910   1.133  ! Near Maximum !
Vihtavuori N560                     99.0     54.1     3.51    3445    98.4    63000   13185   1.138  ! Near Maximum !
IMR 7828 SSC                        98.0     53.8     3.49    3440    98.8    63000   12803   1.126  ! Near Maximum !
IMR 7828                           103.6     53.8     3.49    3440    98.8    63000   12803   1.126  ! Near Maximum !
Accurate MAGPRO                     99.2     56.4     3.65    3429    97.3    63000   13237   1.148  ! Near Maximum !
ADI AR 2213                         99.1     53.6     3.47    3426    98.8    63000   12698   1.125  ! Near Maximum !
ADI AP 2214                        102.9     57.1     3.70    3419    99.1    63000   12507   1.123  ! Near Maximum !
Bofors RP5/NP ~approximation        99.3     53.7     3.48    3419    99.5    63000   12668   1.144  ! Near Maximum !
Raufoss RA15                        99.3     53.7     3.48    3419    99.5    63000   12668   1.144  ! Near Maximum !
Alliant Reloder-22                  99.3     53.7     3.48    3419    99.5    63000   12668   1.144  ! Near Maximum !
Bofors RP15                        101.9     53.9     3.49    3417    99.5    63000   12681   1.144  ! Near Maximum !
Winchester WXR                     101.9     53.9     3.49    3417    99.5    63000   12681   1.144  ! Near Maximum !
Ramshot Magnum                      99.1     57.7     3.74    3396    99.8    63000   12078   1.139  ! Near Maximum !
Bofors RP5 NT ~approximation       102.7     56.0     3.63    3385    97.1    63000   12521   1.128  ! Near Maximum !
Rottweil R905                      100.6     53.4     3.46    3384    98.4    63000   12405   1.143  ! Near Maximum !
ADI AR 2209                         96.0     51.1     3.31    3382    99.4    63000   12079   1.130  ! Near Maximum !
Alliant Reloder-19                  96.5     51.6     3.34    3377    99.4    63000   12129   1.138  ! Near Maximum !
Hodgdon H1000                      107.0     56.6     3.67    3375    98.7    60581   12381   1.140  ! Near Maximum !
ADI AR 2217                        107.0     56.6     3.67    3375    98.7    60581   12381   1.140  ! Near Maximum !
Bofors RP14 ~approximation          97.2     52.0     3.37    3369    99.4    63000   12041   1.139  ! Near Maximum !
Ramshot Hunter                      92.1     50.8     3.29    3369   100.0    63000   11687   1.145  ! Near Maximum !
Raufoss RA4                         94.7     50.6     3.28    3354    99.3    63000   11853   1.137  ! Near Maximum !
Bofors RP4 ~approximation           94.7     50.6     3.28    3354    99.3    63000   11853   1.137  ! Near Maximum !
Norma 204                           91.7     50.6     3.28    3354    99.3    63000   11853   1.137  ! Near Maximum !
Hodgdon H4831 SC                    97.8     52.9     3.42    3350    98.1    63000   11992   1.135  ! Near Maximum !
Hodgdon H4831                      101.7     52.9     3.42    3350    98.1    63000   11992   1.135  ! Near Maximum !
Somchem S365                        93.1     49.5     3.21    3347   100.0    63000   10820   1.156  ! Near Maximum !
Norma URP                           91.6     48.5     3.14    3347   100.0    63000   11208   1.150  ! Near Maximum !
Bofors RP19 ~approximation          91.6     48.5     3.14    3346   100.0    63000   11205   1.150  ! Near Maximum !
Accurate 4350                       90.5     48.4     3.14    3336   100.0    63000   11143   1.170  ! Near Maximum !
ADI AR 2225                        107.0     57.5     3.73    3333    99.8    54061   12758   1.194
Hodgdon Retumbo                    107.0     57.5     3.73    3333    99.8    54061   12758   1.194
Somchem S385                        96.5     52.2     3.38    3331    99.8    63000   11564   1.160  ! Near Maximum !
Bofors RP4 NT ~approximation        92.3     50.1     3.25    3326    99.9    63000   11397   1.150  ! Near Maximum !
Rottweil R904                       95.7     50.4     3.27    3325    98.7    63000   11606   1.138  ! Near Maximum !
IMR 4831                            96.0     49.2     3.19    3324   100.0    63000   10954   1.159  ! Near Maximum !
Winchester Supreme 780              95.2     53.7     3.48    3322    99.4    63000   11518   1.146  ! Near Maximum !
Hodgdon H4350                       94.4     49.4     3.20    3315    99.8    63000   11230   1.140  ! Near Maximum !
IMR 4350                            92.7     49.3     3.19    3315    99.8    63000   11207   1.140  ! Near Maximum !
Vihtavuori N165                    101.7     53.8     3.49    3315    99.7    63000   11302   1.151  ! Near Maximum !
ADI AR 2218                        107.0     60.9     3.95    3314    92.6    53785   13921   1.189
Lovex S070                          91.7     48.5     3.14    3312   100.0    63000   11230   1.157  ! Near Maximum !
Lovex S071                         104.8     53.0     3.44    3310   100.0    63000   11163   1.176  ! Near Maximum !
Accurate 3100                       99.1     53.0     3.44    3310   100.0    63000   11163   1.176  ! Near Maximum !
Vihtavuori N160                    102.0     52.3     3.39    3303    98.6    63000   11374   1.142  ! Near Maximum !
Rottweil R907                       90.1     47.3     3.06    3299    99.8    63000   11137   1.149  ! Near Maximum !
Bofors RP7                          90.1     47.3     3.06    3299    99.8    63000   11137   1.149  ! Near Maximum !
Hodgdon Hybrid 100V                 94.0     48.6     3.15    3298   100.0    63000   10346   1.150  ! Near Maximum !
Lovex S065                          90.9     47.5     3.08    3289   100.0    63000   10814   1.156  ! Near Maximum !
Somchem S361                        94.6     53.9     3.49    3284    98.2    63000   11355   1.151  ! Near Maximum !
Lovex D100                         107.0     61.6     3.99    3259    89.9    61727   11832   1.160  ! Near Maximum !
Vihtavuori 24N41                   107.0     60.9     3.95    3240    87.4    56442   12369   1.182  ! Near Maximum !
Hodgdon H870                       107.0     59.1     3.83    3211    93.9    49176   13061   1.248
Vihtavuori N170                    107.0     56.6     3.67    3189    92.2    55932   11814   1.216  ! Near Maximum !

 

[Rigbymauser]

Went to the shootingrange here today to test my load. Velocity was 1038 m/sec or little over 3400 ft/sec. Accuracy was absolutely minut-of-barn-gable. No sign of overpressure except the natural flat primer which is always seen on a full loaded Weatherby round.
To ride straight and speak the truth, of the shots I have fired in this rifle, accuracy isn't its strongest side. I do much better with ironsights and my ol' 1913 Mauser in 8x57.
The testing here today was done at 200meters. Average group was 6x6" inches. I can easily do 4x4" with the 8x57 with ironsights at this range from a bench.

 

[FOTIS]

Time for a new tube????

Tried any other bullets?

 

[DrMike]

I would certainly anticipate a greater degree of accuracy from the cartridge. I believe Fotis is correct in suggesting the need of a new tube.

 

[Rigbymauser]

Time for a new tube????

Tried any other bullets?

Tried Hornady 105Amax, Sierra fmj, Barnes tsx also with some dissatisfied results.
New barrel might be the answer, although looking down the barrel the rifling looks sharp.
If a new barrel is the answer I want a 27" tube with 1:9 twist and a slight heavier..
we'll see..

 

[truck driver]

Just curious when was the last time you scrubbed the cooper out of the barrel? and checked the action screws. Weatherbys have been known to loosen screws.

 

[Rigbymauser]

Just curious when was the last time you scrubbed the cooper out of the barrel? and checked the action screws. Weatherbys have been known to loosen screws.

...that's a very good question you are asking here..haha...

The bore has not been scrubbed by me yet, but the actionscrews are tight and the barrel is free floating is checked. I will here tonight let the barrel cook in solvent to dissolve any residues of jacket material. That might squeeze the groups down to 4x4"..

 

[257 Ackley]

Hi Jens -
I had a "made in Germany" 240 back in the 80's that would not shoot either. I tried everything possible from bullet seating depths to as many different powders as I could afford to buy. Nothing seemed to work. Best groups at 100 yards were in the 2" range.
Have you put a bore scope in the chamber/throat area to see what it really looks like? I have seen some bores that looked clean and shiny to the naked eye that were really alligator skinned once a bore scope was used. You may want to see if a carbon ring has developed as well that is causing some of the problem.

 

[Rigbymauser]

Problem solved!!. Problem fixed!!(what seems to)

Loose scopebases was the problem. Scope bases cleaned(degreased), surfice where the scopebases will surmount cleaned(degreased)..thread on screws and screwholes cleaned(degreased). All again assembled, but this time with Lock-Tight.

I have also scrubbed the barrel, and the rifling looks absolutly new cut, so now I will load up a batch of rounds to again take to the range here this weekend. I have sat my hopes high again...
I wanna see thing thing make bullets scream out of the barrel. I will try too the 80grain Barnes TSX. Maybe they can reach the 3550 ft/sec with a care approach?.

..Oh I forgot..actionscrews have likewise recieved same treatment.

 

[SJB358]

Very nice buddy. Hope that settles it in for ya. Looking forward to some groups with that rifle!

 

[BK]

Loose scopebases was the problem.

Yeah, that would probably do it!

 

[Rigbymauser]

Here is from today rangesession.

First 4 shots including 1 sighter.

As viewed the 1st sighter printed in the left corner bottom 7 O`clock. From here I dialed in.
The "handpainted" dot is about 3" in diameter. Shot # 1,2,3 printed "okay", and here I actually got a little excited..

I paited a new dot with less diameter in the naiv believe it would help to make a smaller group.
I realized on my 2nd aiming dot the cross on this German scope was too big, and I had through this session a great difficulty to focus and my follow-through afterwards which became obvious.


Shot# 4,5,6,7 printed all over, which proved my teory as I had before shooting. I couldn´t find focus on the smaller dot. From here I used the first larger dot I painted.
I dialed too much to the right which is viewed.


Shot# 8,9,10 printed to the right. I dial a few clicks to the left. Shot# 11,12..out of ammo!!.
Between shot# 8,9,10 and # 11,12 I had the scope of for chronograph test. I had unfortunatly had to use 4 shots before the chrono "caught" the bullet.(waist of ammo it became).
The load was. 55,5grain Norma MRP. BUllet 87grain Barnes TSX.V0= 1019 m/sec(3343 ft/sec).

Conclusion so far:
I had hoped for more velocity from that load, but okay one had to start somewhere.
Accuracy: The S&B scope isn´t made for shooting at very small targets/objects at all. It´s a good scope for the average deer rifle at average range in the average caliber, but not for over 200meters shooting at quartersize targets at longrange. This can be improved. I have had scoped where the crosshair could stay within a quarter at 200m..no sweat. As far as this load it is difficult to say if it is accurate enough for anything really. I had hoped for more to ride straight and speak the truth..but again one has to start some place.

 

[SJB358]

Looks pretty decent. Targets make a big difference to me. When I start shooting with thicker crosshairs which I like more for hunting, I have to get clear aiming points and also use a 6 O'Clock hold on the dots. Seems to work much better for me.

Looks like it is coming together well though RM. That's a cool cartridge for sure.