Results obtained using 243 Winchester loads in 700 Remington rifl es. Rifl e Hers
Bullet
55-gr. Nosler Ballistic Tip 55-gr. Nosler Ballistic Tip 55-gr. Nosler Ballistic Tip 55-gr. Nosler Ballistic Tip 55-gr. Nosler Ballistic Tip 55-gr. Nosler Ballistic Tip 55-gr. Nosler Ballistic Tip 60-gr. Sierra H.P.
70-gr. Sierra MatchKing 75-gr. Sierra H.P. 87-gr. Hornady S.P.
Length In. 2.660 2.660 2.660 2.660 2.660 2.660 2.660 2.600 2.625 2.654 2.650
Average velocity is for fi ve shots.
These loads were safe and reliable in the authors’ rifl es, but neither the authors nor the publisher accepts any responsibility for their preparation and use by others. These loads should be approached with caution.
in his. On the other hand, his rifle gave a 0.50" group with the 55-grain Nosler Ballistic Tip when used with 44.5 grains of IMR 4350, but her rifle did not like that load at all and gave a 1.52" group. Third, the 70-grain Sierra Match-
King showed excellent accuracy in both of our rifles with very small groups measuring less than one-half inch. Overall, the accuracy we obtained was not as good as we had hoped for, but as mentioned above wind certainly was a factor. Because we acquired a large number of the 55-grain Nosler Ballistic Tips on a clearance sale, our hope was that this bullet would give sterling ac- curacy in our rifles with a minimum of load development. Although some of our groups measured less than one inch with that bullet, it appears that it may be necessary to do some more work with it. It may be that the 1 in 9.125" twist that
Remington uses for the 243 Winchester is a little too fast for best accuracy with a bullet weighing only 55 grains. With our best loads, accuracy is certainly ad- equate for most of our varmint hunting. Even though not all of the loads
met our expectations, we now have a basis for further work. As someone once said about research, “There is success or there is learning.” We definitely have learned from this project and in some cases success has been achieved. More- over, we have spent some enjoyable hours with the “his” and “hers” rifles.
CONTACTS
Alliant Powder (800) 276-9337
www.alliantpowder.com
Competition Electronics, Inc. (815) 874-8001
www.competitionelectronics.com
Hodgdon Powders (913) 632-9455
www.hodgdon.com Hogue, Inc.
(800) 338-4747
www.getgrip.com
Hornady Manufacturing Co. (800) 338-3220
www.hornady.com Nosler, Inc
(800) 285-3701
www.nosler.com
Remington Arms Co., Inc. (800) 243-9700
www.remington.com
Sierra Bullets (800) 223-8799
www.sierrabullets.com
Powder IMR 4320
Grains 43.0
Power Pro 2000MR 42.5 Power Pro 2000MR 43.5 IMR 4350 IMR 4350 IMR 4064 IMR 4064 IMR 4350 IMR 4350 IMR 4350 IMR 4350
44.5 45.5 40.0 41.0
0.82 1.39 1.03 1.52 1.75 1.24 1.35
0.36 0.78
3,683 3,429 3,497 3,242 3,318 3,401 3,551
2,941 2,855
Rifl e His
Vel., fps Group, In. Vel., fps Group, In. 3,659 3,447 3,487 3,252 3,294 3,407 3,478
1.04 1.23 1.11 0.50 1.74 1.33 1.29
42.0 2,852 1.24 2,894 0.95 43.0
2,920 2,924
44.0 3,211 0.77 3,105 1.04 41.8
0.43 1.08
This 0.77-inch group was produced by the 75-grain Sierra hollow-point driven by 46.0 grains of IMR 4350.
Page 48 Winter 2013
The 0.78-inch group shown was produced by the 87-grain Hornady Spire Point and 41.8 grains of IMR 4350.
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