cart SHOPPING CART You have 0 items

Discussion Forums

Search forums
Forum Index > Rifles general discussion > New build - barrel length?

New build - barrel length?

27 May 2016
@ 12:29 pm (GMT)

Arve Ringsbye

I`m starting up a new build on a ruger no 1.

I`ve decided to go for the 300 holland and holland magnum.

The barrel will probably be a Lothar Walter, but I`m not sure to which length to choose.

Since going for the short No1 action I was thinking of a 28`barrel?

On the other hand - is there any gain in this length - regarding the amount ogf powder in the 300 hhm?


27 May 2016
@ 02:01 pm (GMT)

Bryan Webster

Re: New build - barrel length?
I doubt 28 inches gives a significant advantage for the 300 H&H but I used Google to find more information on this.

Optimum barrel length for 300 H&H Magnum rifles is discussed here:

Other factors enter into this such as weight of the barrel versus strength of the action to adequately support that length on your particular action and its effect on accuracy, overall balance of the firearm, carry weight. There could be other matters.

Years ago I bought the single shot Browning with a heavy barrel in 30/06. If off the bench it was a shooter, and a beutiful firearm, however forget offhand or prone or using a sling with it at all, as the tang that held the foreshock did not provide enough strength to prevent inaccuracies. I tried bedding the barrel and a lot of things but nothing really worked so it got sold. All this being said, I never did own a Ruger Number 1 rifle, so I could be wrong on this latter point as it may not apply so much to your action.
27 May 2016
@ 07:46 pm (GMT)

Thomas Kitchen

Re: New build - barrel length?
hi Arve.
i think if you aim for a 28" you should be fine and can always chop it to 26" later.

Bryan brings up a valid point about how much weight you hang of the action specially with a 2 piece stock.

little bit more info what weight projectiles are you planning on running?

what terrain/area are you hunting?
30 May 2016
@ 09:34 am (GMT)

Arve Ringsbye

Re: New build - barrel length?
Thanks for advicing.

The rifle will be used for long range hunting, mostly in mountain terrain, hunting mainly red deer and elk. I will tolerate a good 10ib for the gun with scope.

Bullet weights will be 180 - 210gr.
31 May 2016
@ 02:15 pm (GMT)

Bryan Webster

Re: New build - barrel length?
Here is some food for thought. When barrels are gauged it's general practice to make the chamber on the end with the largest bore diameter. Won't be much larger but when a barrel has some "choke" in it speed is affected in a positive manner. Cutting off the muzzle end could alter that and if the rifle is nice and accurate, you could alter that. Not sure I see how much better the extra 2-4" will make the barrel.

One thing certain, if you cut the barrel down and it doesn't shoot as well as it does now, you can't go back. If it shoots well, why mess with a good thing.
31 May 2016
@ 09:29 pm (GMT)

Nathan Foster

Re: New build - barrel length?
Bryan, your first comments are of great relevance. I know quite a few people opt for a long barrel on the No.1. There is no action per say, so a 28" barrel on this rifle is akin to a 24-25" barrel on a repeater. But, the longer and heavier you go, the more the barrel will want to whip under harmonic forces. And being that this rifle has a finicky forend assembly- harmonics are everything.

This is tough because a light and long barrel really whips, but a long and heavy barrel sags and has some momentum when it whips. Some measure of barrel bedding can help with this. Chamberings such as the .45/70 or even a 45/120 are a boon because we tend to place lower expectations on effective range, though some rifles are deliberately set up for long range silhouette.

As for modern chamberings and long range affairs. Some work, some don't. It is annoying when one person achieves accuracy- then declares this as an absolute for all No.1 rifles. Again, individual barrel harmonics are key. I cannot suggest a set method for forend bedding as it differs from rifle to rifle.

If you go 28", you may gain 50fps over a 26" barrel, when using N170 and the 208gr. Its not a great deal.

Recoil of the N0.1 will be hefty with mid contour barrel but there is a risk of sagging with a long bull barrel and magnum forces. You may want to adopt a long parallel knox, then taper to .675" at 26".

A tightly fitted over barrel suppressor may help tame down harmonics but will ruin the classic look somewhat. Still, this is an option and a good way to keep recoil down in this particular rifle. If you go 5 " back and 3" forwards on a 26" barrel, you will get your 28" speeds, plus you will still have a rifle that is not too long and the diameter I suggest should prove good regarding heat.


We are a small, family run business, based out of Taranaki, New Zealand, who specialize in cartridge research and testing, and rifle accurizing.