Reloading The .270 Winchester Rifle

Posted on: Wednesday January 6, 2021
Reloading The .300 Winchester Magnum Rifle
MD Smith

MD Smith


(FN=Flat Nose, SP= Spire Point, HP= Hollow Point, RN= Round Nose) JHP= Jacketed Hollow Point, FMJ=Full Metal Jacket)

Loads for .270 Winchester Rifle:

(Note: These are near maximum loads, you should use 10% less to start.)
(See note on Powders below or read all about various Powders.)
Bullet is .277″ 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.

100 grain JSP (Speer Jacketed Spitzer)
IMR 4895 49.5 gr. 3,260 FPS
IMR 3031 49.0 gr. 3,300
Reloader 12 52.5 gr. 3,355
Reloader 15 53.8 gr. 3,465
A2700 41.0 gr. 2,854
A3100 49.0 gr. 2,864
WMR 59.5 gr. 3,120
760 56.0 gr. 3,335
130 grain JSP ( Sierra Spitzer Point )
IMR 4895 44.0 gr. 2,825 FPS
IMR 3031 46.0 gr. 2,915
H4895 46.0 gr. 2,970
Reloader 12 47.5 gr. 2,865
Reloader 15 47.3 gr. 2,840
Reloader 19 57.5 gr. 3,110
H380 52.0 gr. 3,054
A2700 52.0 gr. 2,954
A3100 61.0 gr. 3,065
WMR 58.9 gr. 3,000
760 52.0 gr. 2,990
150 grain JSP (Speer Spitzer Point)
IMR 4895 42.5 gr. 2,675 FPS
IMR 3031 43.0 gr. 2,690
H4895 43.0 gr. 2,704
Reloader 19 55.5 gr. 2,945
Reloader 22 58.5 gr. 3,010
H380 50.0 gr. 2,878
A2700 50.0 gr. 2,738
A3100 58.0 gr. 2,894
WMR 57.5 gr. 2,850
760 49.0 gr. 2,725
170 grain JRN (Speer Round Nose)
IMR 4895 42.0 gr. 2,410 FPS
H450* 50.0 gr. 2,510

* use magnum primers

Discussion: The .270 and 7 MM are fast, flat trajectory bullets and loads. IMR 3031 is a faster burning powder than IMR 4895, so you use less of it for similar volocities. I have listed powders of Hodgdon, Alliant and Accurate also. Use which ever you have handy. Slow burning powders generally work better in longer barrels and heavier bullets. .270 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. For hunting at shorter ranges in brush, as is common in the woods of Alabama, you should choose a round nose bullet. They are less easily deflected and/or deformed by brush that you may be shooting through. The .270 is really better for long-range, open country and not so much for the brush and woods. But any clear shot with it is deadly.

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. Each case should be exactly on specs and the bullet should not be crimped into the case. (These bullets don’t normally have a crimp ring anyhow)

*
#2400, Reloader 7, 11, 12, 15, 19, and 22 are products of Alliant (formerly Hercules) Powders.
H380, H450 and H4895 are products of Hodgdon Powders.
IMR 3031 and IMR 4895 are products of IMR (formerly DuPont) Powder Company.
No. 2, No. 5, #2230, #2700, #3100 and #2460 are products of Accurate Arms Company
WMR, WSF, WSL, 760, 748, 231 and 540 are products of Winchester, Components Div.

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.