question on 300 whisper barrel length

[crowminator]

Hello, I ordered a barrel from Pacnor 30 cal, heavy varmint, 1-6.5 twist. Itshould be ready to ship in about 4-5 weeks. Has anyone had any experience with a twist rate faster than the usual 1-8 twist. The blank I ordered will finish up to 26" length. Has anyone had any experiencce with the barrel longer than 16" I was thinking the longer barrel would be quieter with a suppresor because it would take less powder to get up to the speed of sound.

[Cornholio]

My 300W bolt gun has a 23" barrel. My can isn't terribly efficient, so I wanted to make up for it with barrel length. If I could do it over again though, I would have cut it to 18". I'd also have gone with the 6.5" twist over the 8", if I would have had the choice. Douglas didn't have anything other than 8 or 10".

[WhisperFan]

I just got a call from PacNor today about my barrel. They had a question about one of the dimensions that I specified. By the time they trued up the blank, they were 10 thou under what I asked for - I told them "not critical". They said it was going off to fitting soon - should be about a week or ten days.

I have nothing to contribute as to performance, but I went with the 5-groove 1 in 7 twist at 18"

I'll certainly post some results when I know them.

[Quarterbore]

I tried to figure out where I read this but I could swear I read somewhere that the 300 Whisper only requires a barrel of about 13-inches to use up all of it's powder. This is why the 300 Whisper is such an excellent choice for the hand rifles like the T/C Contender.

I looked through the info I got from JD Jones as well as a couple books I have and I could not find it...

I would not build a 300 Whisper in anything over 20 or 22-inches and as I said in another thread I wish I had my Remington 700 LTR built with an 18-inch barrel instead of the 21-inches it is as with the Gem-Tech Bi-Lock on the barrel the barrel is just too long.

I will be curious how well you make out if you go with a long tube but that tube sounds like it was made for something like a 308 and some monster heavy bullets shooting at 1000-yards. The 300 Whisper just doesn't need that much runway to get the job done.

[crowminator]

The barrel I have on order from Pacnor is unchambered at 28" it can be a finishened length up to 26". I was just wondering if there was an advantage of a longer barrel or an optimum length of barrel for the 300 whisper. Mickey at Coleman rifles will be doing the chamber job and can shorten the barrel then. After I figure out how long it needs to be. I read that some folks were having trouble with the 240mk's in the 1-8 twist barrels so I chose the 1-6.5

[lemmethink]

Over on the savageshooter.com forum I remember reading that 16" is ideal for a 300/221.

I haven't got a chance to shoot it yet but I got a PacNor 17", 3 groove, 1 in 6.5" twist, stainless super match, 1.055" straight cylinder, and pre-fit for a stevens 200 action. I finally got the barrel swapped out today and mounted a super sniper scope on it. I loaded up a few rounds tonight so hopefully if it isn's snowing or too cold I might get to sneak out and shoot it tomorrow.