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Rich
08-16-2009, 05:25 PM
My .257 Weatherby

Cliff told me about hunting elk in three states with a couple of his buddies. They used to use heavy for caliber bullets. He used 175 Noslers in his 7RUM while his friends fired 120 Noslers. All were partitions. One fellow shoots a .25-06 and the other a .25-06 A.I. He said they always had to follow up the trail at least fifty yards, but not over a couple hundred yards.

I convinced them to try the solid copper bullets that were much lighter. Cliff went with 127 grain Groove bullets and 120 grain G.S.Customs. The other two tried 100 grain Barnes. To say they were delighted is an understatement. Since switching they have killed fourteen bulls. The longest tracking job they had since switching is twenty feet. Not yards! They have killed two spikes side by side at a ranged 410 yards. Cliff fired a 127 grainer and the other fellow fired a 100 grain Barnes. Both of bulls dropped at the shot.

One bull was shot at about 50 yards. The 100 grainer from the 25-06 A.I. entered the left ham. They found the bullet under the skin in front of the right shoulder. Its weight was more than 80 grains. The shooter claims 3,600 feet per second with his A.I.

This convinced me to trade off my 7RUM and order a .25-06 A.I. Then I read where a fellow with a .257 Weatherby achieved 3,800 feet per second with a 28 inch barrel. I changed the order and gave the ‘smith the freedom to order any barrel and trigger he wants. Since he is making the action from scratch, he is going to make it fit a Remington trigger because there are a ton of aftermarket triggers available. It will be set at about twenty ounces. The barrel will be a 28” medium weight with seven flutes. I don’t remember the brand.

He showed me the action. It has three lugs that are attached like a Savage bolt. When the action is in the open position the bottom lug acts as a control round feed. Kinda cute. It will hold one or two in teh magaziune. It does not have an ejector spring; although it has an ejector. The rear of the ejector hits something in there like the Mauser action. If you pull it back fast, the shell is sent flying. If you pull it back slowly the shell can be lifted out. Nice.

The stock will be made of Zebrawood. He told me it is light and stable. It will have a very high cheek piece like a Weatherby to accommodate the very high Burris Signature rings which hold the 4 ½-30X50 Bushnell 6500 mildot. He is going to make a cantilever scope base. The advantage of high rings is equivalent to 100 feet per second increased velocity. (I verified this with dozens of shot fired with everything the same except changing from low rings to high rings. Then I ran a ballistic program and it predicted what I discovered in the real world.)

postoak
08-16-2009, 05:55 PM
It sounds like a pedal-to-the-metal rig! I'm glad you're going with a 28 inch barrel so that the .257 will be fully exploited.

I can't understand how scope height would increase muzzle velocity (perhaps I'm misreading what you're saying.)

Rich
08-16-2009, 11:13 PM
It sounds like a pedal-to-the-metal rig! I'm glad you're going with a 28 inch barrel so that the .257 will be fully exploited.

I can't understand how scope height would increase muzzle velocity (perhaps I'm misreading what you're saying.)


Scope height does not increase muzzle velocity.

The result of an apparently barely better trajectory is caused by the bullet having to travel further before it crosses the line of sight. Picture an arc. Put a point on the right side of that arc a little down a little from the highest point of the arc. Now put two points to the left side of the arc; one higher than the other. These are representing the mounted scopes. A point below these two would be the line of the bore. If you draw a line from the three points on the left through the point on the right, you will see what is happening.

If you don't understand go to a ballistics program and put in some numbers and you will see it. It takes about 100 feet per second more for 1.68" scope to match 2.2" scope. Those are the two heights I had to work with.

I forgot to mention the 'smith said it would weigh less than seven and a half pounds.

Hi Ball
09-18-2009, 09:24 AM
Rich congrats on your selecting a .257-Wby! I have shot a couple in my day and they are a top self caliber for almost anything you wish to hunt, if using the proper bullet etc. It was Roy Weatherby's favorite and the one that got him a half moon scare above his eyebrow while hunting elk years ago.

The only thing I really dread about those Weatherby caliber's, is the price your going to have to pay for factory ammo or those big arse cases! They do use a whole lot of powder too! It will reach out and touch a song-dog far far away and can bring down a bull elk to boot.:D