300 rum

MacWonderful

MacWonderful

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SW Ontario
Just bought a Remington 700 in 300RUM
Previous owner used Retumbo powder, but I can’t find any in Ontario. So his reloading data does me no good.
Anyone own a 300RUM Remington 700 and have a recipe? Or know where I can buy Retumbo?
 
How much difference have you guys noticed with same grain projectiles from different manufacturers? Example 180gr Nosler Accubond vs 180gr Hornady SST.
Reason I ask is My local shops are all picked clean for certain components. With no timeline for restock
 
H1000 with 210 Berger HVLD is a solid combo with the 300 RUM. Also H1000 with Berger 215 Hybrid. CCI 250 primers have also been the go to.

Ive loaded for 4 different 300 RUMs - Remingon Senderos all of them. One of those 2 combinations has been solid in all of them. Each combination has proven to be excellent for hunting. Proven on elk, moose, deer.

Seems like H1000 is real scarce these days. IMR 7977 or Vihtavouri N570 would be the next 2 powders I would look into.
 
kLtEsGW.jpg


89gr Retumbo
200gr Nosler Accubond
Remington brass
I just bought the rifle used, put a TriggerTech trigger on and took it to the range. I was very impressed.
 
I am looking to cut my barrel to 22’’. I know a lot of people would disagree, but I want to try it out since I am tired of walking around with a 28’’ London boom stick. So I will try out some h4350 with some ELD-X 212 and 178. I also have some H1000, but thought that with a shorter barrel, using a faster powder would be better, what do you guys think?
 
fern2400.if you cut that barrel down that rifle will be a flamethrower. when I had mine even with the 26 barrel I could see lots of muzzle flash.
 
rar said:
fern2400.if you cut that barrel down that rifle will be a flamethrower. when I had mine even with the 26 barrel I could see lots of muzzle flash.
Click to expand...

I did some research a little and a few people are running them as short as 20. But like I said using faster powder to burn it before the end of the barrel. So you avoid the flame thrower problem.
 
fern2400 said:
I am looking to cut my barrel to 22’’. I know a lot of people would disagree, but I want to try it out since I am tired of walking around with a 28’’ London boom stick. So I will try out some h4350 with some ELD-X 212 and 178. I also have some H1000, but thought that with a shorter barrel, using a faster powder would be better, what do you guys think?
Click to expand...

Mosewell just buy a 300 win mag then lol
 
fern2400 said:
I am looking to cut my barrel to 22’’. I know a lot of people would disagree, but I want to try it out since I am tired of walking around with a 28’’ London boom stick. So I will try out some h4350 with some ELD-X 212 and 178. I also have some H1000, but thought that with a shorter barrel, using a faster powder would be better, what do you guys think?
Click to expand...

Code: 
Cartridge          : .[B]300 Rem Ultra Mag[/B]
Bullet             : .308, [B]212, Hornady ELD-X[/B] 3077
Useable Case Capaci: 97.404 grain H2O = 6.324 cm³
Cartridge O.A.L. L6: 3.598 inch = 91.39 mm
Barrel Length      :[B] 22.0 inch[/B] = 558.8 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 62000 psi, or 427 MPa
or a maximum loading ratio or filling of 104 %
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 !

188 loads produced a Loading Ratio below user-defined minimum of 80%. 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                     96.4     91.3     5.92    2960    97.2    62000   18867   1.167  ! Near Maximum !
Alliant Reloder-33                  98.3     95.8     6.20    2953    97.5    62000   18722   1.166  ! Near Maximum !
Hodgdon Retumbo                    100.2     90.4     5.86    2949   100.0    62000   16642   1.141  ! Near Maximum !
Hodgdon H870                       102.4     95.0     6.15    2945    98.6    62000   18304   1.170  ! Near Maximum !
Alliant Reloder-50                 102.2     99.2     6.43    2941    96.9    62000   19049   1.181  ! Near Maximum !
Vihtavuori N560                     88.5     81.2     5.26    2897    99.4    62000   16911   1.154  ! Near Maximum !
Hodgdon H1000                       97.6     86.7     5.62    2897    99.8    62000   16209   1.137  ! Near Maximum !
Alliant Reloder-26                  84.8     81.8     5.30    2893   100.0    62000   15853   1.170  ! Near Maximum !
Accurate MAGPRO                     88.8     84.8     5.49    2892    98.6    62000   17164   1.159  ! Near Maximum !
IMR 7828                            92.6     80.8     5.24    2892    99.7    62000   16421   1.146  ! Near Maximum !
Alliant Reloder-25                  93.4     83.4     5.40    2891   100.0    62000   15593   1.156  ! Near Maximum !
Alliant Reloder-22                  88.8     80.6     5.22    2872   100.0    62000   16122   1.160  ! Near Maximum !
Ramshot Magnum                      88.7     86.8     5.62    2859   100.0    62000   15517   1.158  ! Near Maximum !
Alliant Reloder-19                  86.8     77.9     5.05    2843   100.0    62000   15466   1.154  ! Near Maximum !
Hodgdon US 869                     104.0     99.5     6.45    2836    91.4    59939   17287   1.180  ! Near Maximum !
Hodgdon H4831                       91.9     80.2     5.19    2832    99.3    62000   15539   1.150  ! Near Maximum !
Ramshot Hunter                      82.5     76.5     4.96    2824   100.0    62000   14748   1.163  ! Near Maximum !
Alliant Reloder-23                  90.2     79.2     5.13    2822   100.0    62000   14362   1.171  ! Near Maximum !
IMR 4955 Enduron                    90.1     78.7     5.10    2808    99.5    62000   15110   1.152  ! Near Maximum !
Alliant Reloder-16                  83.0     72.6     4.71    2806   100.0    62000   14045   1.172  ! Near Maximum !
Hodgdon H4350                       85.3     75.0     4.86    2792   100.0    62000   14291   1.159  ! Near Maximum !


  • Retumbo 100% powder consumed by the time the bullet is 16% down the bore
  • H1000, 99.8% burn @ 22"
  • RL26 100% @ 14"
  • IMR 7828, 99.7% @ 22"
  • H4350 100% @ 19"
 
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