6.5 x300 Weatherby

[Newysan]

Greetings freedom lovers. A buddy wants to build one of these rifles and for the life of me I cannot understand why. The way I see it there is no available ammo, brass, it seems like a "barrel burner" huge amounts of powder a very expensive chamber reamer and that Wby. brass might only be re-loadable a couple of times. Every aspect seems expensive and the way I see it the deer, moose or whatever will never know what it was anyway. With all the available cartridges readily sold there has to be one or more that do just about the same as far as FPS and energy delivered. The only one on the block makes no sense either. Am I missing something ? Thanks Newysan

 

[jmad_81]

Some just have the bug worse (or maybe a different bug) than others. To each their own I guess.

 

[meatmachineman]

I'm actually one of those guys with the bug... except I want to do a 6.5-257Wby. It mainly stems for my affinity for the 6.5 and more recently RoyToys. To me a 6.5Roy is the cartridge they should've made but I simply don't see one on the horizon. I doubt I'll get that project anytime soon... don't even really know where to start....

 

[usmc 89]

well you can go with a 264 baer which is similar only improved built off 340 wby cases. my smith has built quite a few of these velocity is in the 3450-3500 fps range with a 140g berger vld. barrel life is around 500-600. i guess its all up to what you want. for a long range deer elk and antelope rifle i think it would be great. expensive to operate absolutely but few things that are high performance and exotic are cheap.

 

[Wincheringen]

Thats the great thing about freedom.

I like oddball cartridges, but I don't care for wildcats yet.

 

[JD338]

usmc 89 nailed it.

JD338

 

[FOTIS]

To quote the Late Great Elmer Keith, "To hell with efficiency, its performance we want !"

So 3350 fps with a .500 BC is kick azz! I will take 800-1000 rounds out of a barrel and then throw it out and replace it!

Cartridge          : 6.5-300 Weath. Mag.
Bullet             : .264, 140, Nosler HPBT 26725
Useable Case Capaci: 92.161 grain H2O = 5.984 cm³
Cartridge O.A.L. L6: 3.560 inch = 90.42 mm
Barrel Length      : 26.0 inch = 660.4 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 64500 psi, or 444 MPa
or a maximum loading ratio or filling of 105 %
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 !

209 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
---------------------------------  -----------------------------------------------------------------
ADI AR 2218                         97.6     88.3     5.72    3372   100.0    64500   18513   1.257  ! Near Maximum !
Vihtavuori N570                     93.3     83.5     5.41    3319    99.8    64500   18094   1.284  ! Near Maximum !
Alliant Reloder-50                  98.8     90.8     5.88    3290    99.7    64500   18176   1.319  ! Near Maximum !
Hodgdon H870                        99.0     86.8     5.63    3284   100.0    64500   17225   1.292  ! Near Maximum !
Hodgdon 50BMG                      102.2     88.2     5.71    3259    94.2    64500   17765   1.270  ! Near Maximum !
Vihtavuori 24N41                    97.1     87.8     5.69    3253    97.1    64500   17206   1.263  ! Near Maximum !
Hodgdon Retumbo                     96.5     82.4     5.34    3247   100.0    64500   15563   1.281  ! Near Maximum !
IMR 7828                            90.2     74.5     4.83    3246   100.0    64500   15606   1.259  ! Near Maximum !
Norma MRP 2                         92.8     78.9     5.11    3242   100.0    64500   15922   1.288  ! Near Maximum !
Vihtavuori 20N29                   103.7     94.8     6.14    3241    98.7    64500   17223   1.298  ! Near Maximum !
Hodgdon US 869                     101.7     92.0     5.96    3237    97.1    64500   17201   1.280  ! Near Maximum !
Hodgdon H1000                       94.5     79.4     5.15    3228   100.0    64500   15228   1.261  ! Near Maximum !
Bofors RP5 NT ~approximation        90.3     78.2     5.07    3225   100.0    64500   15672   1.252  ! Near Maximum !
SNPE Vectan SP 13                  103.5     89.8     5.82    3222    99.6    64500   16490   1.291  ! Near Maximum !
PB Clermont PCL 513/520/9520       105.0     91.1     5.91    3221    99.1    64078   16708   1.294  ! Near Maximum !
Accurate 8700                      105.0     91.3     5.92    3217    99.6    62832   16529   1.297  ! Near Maximum !
Alliant Reloder-25                  90.7     76.7     4.97    3205   100.0    64500   14804   1.280  ! Near Maximum !
Vihtavuori N170                     97.9     82.2     5.33    3195    99.3    64500   15882   1.280  ! Near Maximum !
Lovex D100                          95.3     87.2     5.65    3184    97.5    64500   15943   1.272  ! Near Maximum !
Vihtavuori N160                     90.4     73.6     4.77    3149   100.0    64500   14064   1.254  ! Near Maximum !
Accurate 3100                       92.1     74.0     4.80    3115   100.0    64500   13575   1.299  ! Near Maximum !
NC A3502 ,test only                105.0     87.3     5.65    3051    86.7    51383   17326   1.374
TLP A 502(RH) ,test only           105.0     87.3     5.65    2990    85.2    50386   16021   1.408
Vihtavuori N32C Tin Star            98.1     41.6     2.70    2404   100.0    64500    6451   1.258  ! Near Maximum !
V1734 7-multiperf ,test only       105.0     87.3     5.65    2164    43.5    25888    8710   1.890
IMR TrailBoss                      105.0     30.1     1.95    2033   100.0    40467    4875   1.549
ADI AS 25 BP                       105.0     30.1     1.95    2033   100.0    40467    4875   1.549

 

[HTDUCK]

I looked at this cartridge and the 6.5STW when I was trying to figure out what I wanted to build.
Kept it simple and went with a 264 Win Mag.


Howard

 

[filmjunkie4ever]

I too would rather go with a 264 Win Mag or even the 6.5-257 Weatherby Mag in place of a 6.5-300 Weatherby. If your friend has money for barrels, custom dies, brass, etc. then why not I guess but being the boring, broke Country boy that I am, I think I just found a new bottom of the list cartridge. No offense meant but there are so many other great guns out there to try, I can't see ever giving this one center stage. But then again I still get excited stuffing 30-06 hulls.
:mrgreen:

 

[FOTIS]

or a 264 rum!

 

[Ridge_Runner]

I run a 6.5 Gibbs (270 case) with a 29.5" barrel I can easily run a 140 to 3300 fps, the additional 150 fps amounts to 1.75 moa at 1k, plus I'll get 2500 rounds of barrel life before accuracy goes south. I'm going to be a bit more conservative and say if properly taken care of the 6.5/300 will get approx. 900 rounds before setback.
I also shoot a 7mm/338lapua IMP. and now have approx. 500 rounds downrange with about 4 thou throat erosion, so the 6.5/300 should do more than 500-600 rounds. but is the difference worth it?
RR

 

[usmc 89]

your going to need to run at least a 30" tube to notice in velocity where that 85 plus grains is going. the longer barrel is going to reduce your choices in recievers as well due to over flexing the barrel will provide. the further you put the muzzle from the action the more problems you will have with a repeater style action.

 

[FOTIS]

Tell you what. My next 30-378 is getting a 30" tube with no brake. :|