Home Forums Hunting & Shooting Ask The Gunwriters OCTOBER: Ask Wayne van Zwoll Questions About "LOADS FOR THE LONG SHOT"

Hello Wayne - a question:

I'm reloading for my .257 Roberts, Mauser action, 24" barrel. 117-gr Hornady SP bullet, IMR 4350 powder, CCI large rifle primers, R-P brass, bullets loaded just short of the lands.

My Hornady manual says with 41 grains I should get 2800 fps, and with 42 grains 2860 or so.

My chronometer readings at the range say (average of 5 rounds per load): 41.0 gr - 2569 fps;

41.3 gr - 2604 fps;

41.6 gr - 2633 fps;

42.0 gr - 2670 fps.

Why are my readings so much lower than the books (both new and and an older Hornady manual) say I should be getting? I am not getting any signs of excessive pressure and I am .8 grain below the max load listed for +P loads in the newer manual.

Thanks! Tom

What load would you recommend for my Remington ,700 Long Range Rifle chambered for 300 RUM

Wayne,
Love your book "Deer Rifles and Cartridges".....

I was reading in a old issue of the American Rifleman, Nov. 1965, an article written by Les Bowman, titled... "Game shooting at Long Range"

Under the subheading "Selecting the proper Bullet".....listing certain calibers, he mentioned about the 270 in particular...... the 150 grain bullet, "while they leave the gun at lower velocities then lighter weight bullets do, in most cases they exceed them in velocity after the first 200 yards, and at long ranges are far ahead both in velocity and energy"

What say you?

Ralph

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Joined 09/08/16
Last Seen 12/09/17