S400 Potential Barrel Upgrade

no avatar
Knightr2
Posts: 3
Joined: Wed Apr 01, 2020 12:58 pm

S400 Potential Barrel Upgrade

Wed Feb 23, 2022 2:22 pm

Hi All,
I'm currently running an S400 carbine in and HFT laminate stock which i like the balance of. I'm interested in free floating the barrel, but feel the s400 barrel is too thin. Is it possible to shorten a CZ 200 barrel and if turned down will it then fit the s400 breech block? Would it also be worth opening up the breech block hole to a wider diameter so there is more strength so less turning down of the barrel?
Anyone done this or have some ideas please?

Many Thanks in advance!

Richard

no avatar
Knightr2
Posts: 3
Joined: Wed Apr 01, 2020 12:58 pm

Re: S400 Potential Barrel Upgrade

Mon Feb 28, 2022 10:32 am

So no responses on here - had hoped for some advice?

User avatar
Gnome of the Woods
Posts: 238
Joined: Sun Mar 22, 2015 10:30 pm

Re: S400 Potential Barrel Upgrade

Tue Mar 01, 2022 2:05 pm

I have a S400 with a S200 barrel. I had it made many years ago, from memory they turned the barrel down to fit the block.
I haven't tried free floating it as it is amazingly accurate with a barrel band on.
Artist formally know as Gnome of the Woods

no avatar
Knightr2
Posts: 3
Joined: Wed Apr 01, 2020 12:58 pm

Re: S400 Potential Barrel Upgrade

Thu Mar 03, 2022 4:10 pm

Thanks Gnome!, trying also to find sizes of the brass end (2 piece) so I can turn a set up - does anyone know the dimensions please?

no avatar
Zed.
Posts: 63
Joined: Sat Aug 31, 2019 10:32 pm
Location: Swansea, WALES. UK (maybe NSW in a few years...)

Re: S400 Potential Barrel Upgrade

Mon Mar 21, 2022 7:23 pm

Knightr2 wrote:
Wed Feb 23, 2022 2:22 pm
Hi All,
I'm currently running an S400 carbine in and HFT laminate stock which i like the balance of. I'm interested in free floating the barrel, but feel the s400 barrel is too thin. Is it possible to shorten a CZ 200 barrel and if turned down will it then fit the s400 breech block? Would it also be worth opening up the breech block hole to a wider diameter so there is more strength so less turning down of the barrel?
Anyone done this or have some ideas please?

Many Thanks in advance!

Richard
hummmmmmmm.....

might have some ideas, can I remember anything usefull though :shock:
Gnome of the Woods wrote:
Tue Mar 01, 2022 2:05 pm
I have a S400 with a S200 barrel. I had it made many years ago, from memory they turned the barrel down to fit the block.
I haven't tried free floating it as it is amazingly accurate with a barrel band on.
who did that then?

:?

must have been expensive to commision such work?

:P
Knightr2 wrote:
Thu Mar 03, 2022 4:10 pm
Thanks Gnome!, trying also to find sizes of the brass end (2 piece) so I can turn a set up - does anyone know the dimensions please?
from memory - was ~15 years ago that I built one from S2/3/4** parts, iirc there was a lot of S300 in there but all S3/4** components (& plenty of S5**) share same
ancestry....
don't bother trying to copy the S3/4/5** breach seal design, easiest to machine a groove in the loading-probe and follow the S200's design (& it suits the barrel / transfer-port ;) )

was the S200 barrel better than the S4** barrel? I tested both on the same lower (valving & hammer / trigger) & didn't see anything noteworthy :mrgreen:

I'll not mention the 75 yard groupings :lol:

all the details & photo's are lost with the old AAOC forum's demise :|

Rich.
Bleugh!

it is my firm belief that people who declare they have a 'bigger signature than' someone are trying to make up for something else :lol:

Image

User avatar
Blackbaronfish
Posts: 3677
Joined: Sun Feb 15, 2015 6:20 pm
Location: Nuneaton

Re: S400 Potential Barrel Upgrade

Sun Apr 10, 2022 5:29 pm

The s200 barrel were less bendy for sure.

BBF
Did I mention that I'm the only one to have attended EVERY meet since we started

no avatar
Zed.
Posts: 63
Joined: Sat Aug 31, 2019 10:32 pm
Location: Swansea, WALES. UK (maybe NSW in a few years...)

Re: S400 Potential Barrel Upgrade

Sun Apr 17, 2022 8:13 am

Blackbaronfish wrote:
Sun Apr 10, 2022 5:29 pm
The s200 barrel were less bendy for sure

BUT,...

is it any better or more accurate?

my 2p is not really :mrgreen:

definately helps you think you'll shoot better though - emperror's new clothes come to mind? :lol: :lol: :lol:

the 'tune' or adjustment & setup of the valving / trigger probably contribute more as consistant valve-opening, mimimal air use and 'jetting' / muzzleblast / muzzleflip as well as not 'pulling' a heavy trigger can keep you on target :?

Rich.
Bleugh!

it is my firm belief that people who declare they have a 'bigger signature than' someone are trying to make up for something else :lol:

Image

no avatar
wellhouse
Posts: 5
Joined: Fri Mar 18, 2022 11:41 am

Re: S400 Potential Barrel Upgrade

Wed Apr 20, 2022 5:13 pm

i've got a s200 barrel on my hft500. It was turned down and is free floated and is brilliant. From memory they start off life 15mm (?) so should turn down onto your rifle i would have thought. Good luck.

no avatar
Zed.
Posts: 63
Joined: Sat Aug 31, 2019 10:32 pm
Location: Swansea, WALES. UK (maybe NSW in a few years...)

Re: S400 Potential Barrel Upgrade

Mon Apr 25, 2022 8:36 pm

wellhouse wrote:
Wed Apr 20, 2022 5:13 pm
i've got a s200 barrel on my hft500. .
is that standard or as a modyfication?

Rich. (knows little about hft500 barrels....)
Bleugh!

it is my firm belief that people who declare they have a 'bigger signature than' someone are trying to make up for something else :lol:

Image

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest