Barnard P and a Dolphin Gunworks Stock

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roberti11

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These pics are from my first range trip with my new Dolphin Gunworks stock (from Peter Dobson at Hirsch Precision). The action is a Barnard P, with a 32 inch .270 1:9 twist bbl from Border Barrels in the UK.

I was shooting Matrix ballistics 175 gn .277 bullets. I must say that this is the best tracking and easiest shooting stock I have ever used. Smithing was done by Omega Custom Guns in Markham.

*Updated to answer questions**

The stock wt is 5lbs 8 oz, including the action screws, this wt is for mine which includes the wide F-class forend. The FTR forend is narrower and may be a bit lighter.

As shown in the pics at the bottom, there is no need to use a bedding block, the stock is CNC machined specifically for each action, in this case the Barnard P. A spiggot, is placed in the centre action screw location and this interacts with the stock as the 'recoil spiggot'


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5 shot groups at 300 meters, load tuning.

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Action removed, recoil spiggot is shown, in the centre of the action, a spare spiggot is shown below.



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Bedding surface of the stock

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Rear of stock

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Forend attachment point

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I would think his simple answer would be speed. The difference between the guys that run 20 inch barrels and 30 inch barrels is that 20 inch barrel guys want to make hits, the f-classers want tiny groups preferably inside the 10 ring. Nice rig, I assume you're only measuring vertical for load development purposes?
 
dirteemax said:
From what I've herd some people say, if all the powder is burnt by the time the bullet 3/4 of the way down the barrel all your doing is losing velocity do to friction in the rest of the barrel.

I've also been told that if the barrel is to long then it's to much weight for the action to hold it securely into the stock.

Some people called my crazy for having a 36" barrel on my 50cal and said anything over 28 is pointless. I was told by some that 28" was stupid on my 308.

Who determines what is the optimal barrel length for long range accuracy shooting?

If 32" is okay on a 270 then 28 can't be that ridiculous on my 308 can it? Seems like its working for this guy
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Shooting long range vs short range are two very different cats. short range accuracy is better achieved with a shorter barrel (as short as 20"). But to maintain acuracy out to a 1000plus yds, you also need volocity. This is acheived by the longer pipe.
 
clatartar said:
I would think his simple answer would be speed. The difference between the guys that run 20 inch barrels and 30 inch barrels is that 20 inch barrel guys want to make hits, the f-classers want tiny groups preferably inside the 10 ring. Nice rig, I assume you're only measuring vertical for load development purposes?
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Yes, this is load tuning, my only concern is vertical.
 
dirteemax said:
how come you went with such a long barrel?? 32" Not saying i think its to long just asking. I went with a 28" barrel on my 308 and everyone tells me that's way to long, longer barrels are no better, anything over 22" is pointless, Longer barrels are no more accurate and blah blah blah

What kind of inlet is used in there aluminium chassis? It is it a round contour or is it a modified V-grove??[/QUOTE]

See updated pictures at bottom of first post
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dirteemax said:
32" is a really long barrel. What is a good barrel length though?
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There are likely to be many opinions. I agree with what was mentioned above, longest practical bbl, very slow powder and a heavy bullet. For me this has been a successful combination. I have shot this same case using N570 and 175gn .277 bullets, 190gn 7mm bullets and 210gn 308 bullets (all Matrix ballistics). I have been happy with the performance of all three.

When you go with a long bbl you need to keep in mind that you will need, a special case, cleaning rod, and should check that it will fit in your safe!
 
The gun looks great, but that hideous looking monstrosity of a rest it is sitting on really detracts from it's true beauty. I know a guy who would take it off your hands for a couple hundred bucks. ;)
 
to the dirteemax fellow. you say everyone tells you, well they missed me and the entire match rifle teams from the uk. we'll tell you that short barrels may be stiffer, but they are not easier to shoot with precision, long barrels can provide a longer sight radius (good thing if shooting open sight) and they add velocity. it varies from cartidge to cartridge, but a 32 inch barrel is excellent for almost all fullbore calibers if the rest of the gun can handle it.
 
paperslayer said:
That is a very nice piece of kit. it looks light on the back end...is it balanced for you?
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Suprisingly, it balances very well, I used this cartridge with a Roberston Composite GBS stock, with a heavy bbl block last year (different bbl), So far I like the way this stock tracks better, if I had used that setup this year, I would likely had to loose an inch or two of bbl to make wt.
 
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