(FN=Flat Nose, SP= Spire Point, HP= Hollow Point, RN= Round Nose), JHP= Jacketed Hollow Point, FMJ=Full Metal Jacket)
Loads for .300 Weatherby Magnum Rifle (The most powerful .30 caliber cartridge in the world):
(Note: These are MAXIMUM loads (unless otherwise noted), you should use 10% less to start.)
(See note on Powders below or read all about various
Powders.)
Bullet is .308″ diameter. Due to different barrel lengths, type of bullet, seating depth, primer type and other factors, you may not get near the FPS charted. It is just a guide and the reason you should start under these
charges and work up.
110 grain JSP (Jacketed Spire Point)
| H4895 | 76.0 gr. | 3,839 FPS |
| H380 | 78.0 gr. | 3,752 |
| IMR4895 | 73.0 gr. | 3,660 |
| IMR4064 | 75.0 gr. | 3,674 |
| IMR7828 | 92.0 gr. | 3,640 |
| IMR4831 | 84.0 gr. | 3,676 |
| Reloader19 | 90.0 gr. | 3,611 |
125 grain JSP (Sierra Spitzer Point)
| H4895 | 71.0 gr. | 3,478 FPS |
| H380 | 75.0 gr. | 3,501 |
| H4831 | 89.0 gr. | 3,590 |
| H1000 | 94.0 gr. | 3,277 (lower pressures) |
| IMR7828 | 90.0 gr. | 3,588 |
| IMR4831 | 82.0 gr. | 3,494 |
| IMR4350 | 80.0 gr. | 3,529 |
| IMR4320 | 72.0 gr. | 3,419 |
| A8700 | 93.0 gr. | 2,954 |
| A3100 | 85.0 gr. | 3,392 |
| A4350 | 83.0 gr. | 3,642 |
| VV N160 | 88.8 gr. | 3,612 |
150 grain JSP (Hornady Spire Point)
| H4895 | 69.0 gr. | 3,325 FPS |
| H380 | 72.0 gr. | 3,323 |
| H4831 | 86.0 gr. | 3,369 |
| H1000 | 94.0 gr. | 3,279 (lower pressures) |
| IMR7828 | 89.0 gr. | 3,377 |
| IMR4831 | 81.0 gr. | 3,324 |
| IMR4350 | 78.0 gr. | 3,304 |
| A8700 | 93.0 gr. | 2,950 |
| A3100 | 85.0 gr. | 3,313 |
| A4350 | 79.0 gr. | 3,333 |
| VV N160 | 83.6 gr. | 3,282 |
| VV N165 | 90.8 gr. | 3,300 |
| Reloader19 | 82.5 gr. | 3,375 |
| Reloader22 | 88.0 gr. | 3,460 |
165 grain JSP (Spitzer Point)
| H4895 | 66.0 gr. | 3,110 FPS |
| H380 | 68.0 gr. | 3,066 |
| H4831 | 84.0 gr. | 3,339 |
| H1000 | 93.0 gr. | 3,224 |
| IMR7828 | 87.0 gr. | 3,272 |
| IMR4831 | 80.0 gr. | 3,184 |
| IMR4350 | 75.0 gr. | 3,151 |
| A8700 | 93.0 gr. | 2,860 |
| A3100 | 85.0 gr. | 3,233 |
| A4350 | 76.5 gr. | 3,171 |
| VV N160 | 82.9 gr. | 3,193 |
| VV N165 | 89.6 gr. | 3,216 |
| Reloader19 | 80.5 gr. | 3,250 |
| Reloader22 | 85.0 gr. | 3,305 |
180 grain JSP (Spitzer Point)
| H4350 | 74.0 gr. | 2,990 FPS |
| H380 | 64.0 gr. | 2,900 |
| H4831 | 81.0 gr. | 3,127 |
| H1000 | 91.0 gr. | 3,152 |
| IMR7828 | 85.0 gr. | 3,200 |
| IMR4831 | 78.0 gr. | 3,014 |
| IMR4350 | 74.0 gr. | 3,040 |
| A8700 | 93.0 gr. | 2,835 |
| A3100 | 82.0 gr. | 3,137 |
| A4350 | 74.5 gr. | 3,059 |
| VV N160 | 80.0 gr. | 3,038 |
| VV N165 | 86.7 gr. | 3,079 |
| Reloader19 | 78.0 gr. | 3,120 |
| Reloader22 | 80.0 gr. | 3,115 (Nosler Partition bullet) |
200 grain JSP (Sierra Spitzer Point)
| H4350 | 71.0 gr. | 2,770 FPS |
| H450 | 70.0 gr. | 2,744 |
| H4831 | 75.0 gr. | 2,880 |
| H1000 | 81.0 gr. | 2,897 |
| IMR7828 | 78.0 gr. | 2,916 |
| IMR4831 | 74.0 gr. | 2,766 |
| IMR4350 | 70.0 gr. | 2,774 |
| A8700 | 93.0 gr. | 2,787 |
| A3100 | 80.0 gr. | 2,987 |
| A4350 | 73.0 gr. | 2,942 |
| VV N165 | 83.1 gr. | 2,949 |
| Reloader19 | 74.0 gr. | 2,995 |
| Reloader22 | 78.0 gr. | 2,970 |
220 grain Jacketed RN
| H4831 | 74.0 gr. | 2,707 |
| H1000 | 80.0 gr. | 2,717 |
| H870 | 92.0 gr. | 3,008 |
| IMR7828 | 75.0 gr. | 2,647 |
| IMR4831 | 71.0 gr. | 2,688 |
| IMR4350 | 67.0 gr. | 2,656 |
| A8700 | 93.0 gr. | 2,761 |
| A3100 | 77.0 gr. | 2,810 |
| A4350 | 69.0 gr. | 2,703 |
| Reloader19 | 71.0 gr. | 2,709 |
| Reloader22 | 75.0 gr. | 2,785 |
250 grain Jacketed RN
| H4831 | 71.0 gr. | 2,507 fps |
| H1000 | 77.0 gr. | 2,571 |
| H870 | 88.0 gr. | 2,704 |
| IMR7828 | 73.0 gr. | 2,556 |
| IMR4831 | 66.0 gr. | 2,469 |
| Reloader19 | 67.0 gr. | 2,516 |
| Reloader22 | 72.0 gr. | 2,633 |
Discussion: This is the most powerful .30 caliber cartridge in the world (commercially made). It can take any game in North America and any thin skinned game in the world. Depends on the type and weight of bullet. You have many choices from the 110 grain light varmint bullet to the 250 grain heavy-weights.
I have listed powders of IMR, Hodgdon, Alliant, VihtaVuori and Accurate. Use which ever you have handy. Slow burning powders generally work better in longer barrels and heavier bullets. 300 Mag. Cases will stretch, especially with hot loads, and you definitely need to check each in a case length guage and trim off excess brass. Of course, discard any cases that show a split anywhere on the case. For hunting at long distances with an unobstructed view, you should choose the spire point with a soft lead tip or a hollowpoint ( depending on the game).
There are a number of other high performance bullets on the market. The “boattail” is a very good long range target match bullet. It has very good wind performance. If you are shooting for precision, you should weight each powder charge and put exactly the same amount in each case.
Actually ALL 30 cal. bullets are .308 in diameter.
Reloader 7, 11, 12, 15, 19 and 22 are products of Alliant (formerly Hercules)
Powders. H380, H4350 and H4895 are products of Hodgdon Powders. IMR 3031, IMR
7828, IMR 4831, IMR 4064 and IMR 4895 are products of IMR (formerly DuPont)
Powder Company. #2700, #4350, #8700 and #3100 are products of Accurate Arms
Company WMR, WSF, WSL, 760, 748, 680 and 540 are products of Winchester,
Components Div. N160, N165 and N140 are products of VihtaVuori Oy Ammunition
Unit.
References: Accurate Arms Co. 1996 Reloading booklet – – Alliant Powder Co.Reloaders’ Guide (1995) – – Hodgdon’s Basic Reloaders Manual (1996) – – Speer Reloading Manual, #12 – – Winchester Reloading Components Manual, 14th edition – – Lyman Piston & Revolver Reloading Handbook, 2nd edition. – – VihtaVuori Oy Company, reloading booklet (1995) – – Numerous magazine articles on reloading special calibers and personal loads where noted.
