The UK's Finest Independent Forum for Shooters and Gun Owners. Est 2010.

Supporting all legal firearm owners, collectors, enthusiasts, shooters and competitors by promoting and encouraging legitimate gun ownership and use in the UK through unity, advocacy and discussion. To REGISTER contact admin(at)full-bore.co.uk
It is currently Mon Sep 23, 2019 1:03 am

All times are UTC




Post new topic Reply to topic  [ 37 posts ]  Go to page Previous  1, 2, 3, 4  Next
Author Message
PostPosted: Sun Dec 09, 2018 1:42 am 
Offline

Joined: Tue Feb 23, 2016 12:10 am
Posts: 87
Image

This is mine. It's a dream to cycle - may look a bit funky but honestly it's better to have something that's easy to use.


Top
 Profile Send private message  
 
PostPosted: Sun Dec 09, 2018 10:56 pm 
Offline
Site Supporter 2019
User avatar

Joined: Fri Oct 04, 2013 6:43 pm
Posts: 5936
Location: West of the Urals
Home club or Range: Classified
:squirrel:.....that has got to be the most butchered dust cover I've seen!.....no mag well dimples, cleaning rod or muzzle brake either!!!!.

Any more of this and it's gulag......ahem......."re-education centre" time for you people!!!!

:p

_________________
"The only real power comes out of a long rifle." - Joseph Stalin


Top
 Profile Send private message  
 
PostPosted: Mon Dec 10, 2018 12:49 pm 
Offline

Joined: Tue Sep 22, 2015 2:22 pm
Posts: 719
Home club or Range: HRA and LERA
I think the problem may be that, cartainly in the case of AR Platforms, the rifles were built and chambered for straight pull to start with.

Parts of my AR have been polished over the years to a point where the bolt will close and lock under its own weight with the slightest tilt. It will unlock with the flick of a finger like a biathlon rifle, partly because it is correctly lubricated but also because it is chambered to take hotter mill surp loads as well as my handloads. As you know hot loads may produce excessive bolt thrust and lock the chamber up that bit more which can be problematical with rotary bolts. I have heard of fluted chambers being used to help combat this.

Also, our grips and straight pull handles are angled down and knurled to make them easy to grab with the index finger without totally releasing the pistol grip.

I know this may sound daft but good clean and fairly polished brass also helps, certainly the nickel plated cases in my BAR10 feed much better than standard .308 ammunition.

Try some moly grease on the spring and rod for a start, helped a load with my BAR15/10 springs.

The AK should be ok as they can be farely loose fitting but in reality it is a sum of small changes that makes an overall difference. We see few if any AKs on the CSR circuit to be fair.

Whatever you do with the spring, it needs to close and lock the bolt when hot and not ridden/forward assisted. If it is too weak it may not carry enough inertia to lock properly (which is how people riding the bolt on ARs get short strokes which leads to miss fires/strikes).


Top
 Profile Send private message  
 
PostPosted: Mon Dec 10, 2018 4:26 pm 
Offline
User avatar

Joined: Wed Jul 20, 2011 11:21 pm
Posts: 2136
Location: Reading West Berks
Home club or Range: hunters NRPC
Maggot wrote:
I think the problem may be that, cartainly in the case of AR Platforms, the rifles were built and chambered for straight pull to start with.

Parts of my AR have been polished over the years to a point where the bolt will close and lock under its own weight with the slightest tilt. It will unlock with the flick of a finger like a biathlon rifle, partly because it is correctly lubricated but also because it is chambered to take hotter mill surp loads as well as my handloads. As you know hot loads may produce excessive bolt thrust and lock the chamber up that bit more which can be problematical with rotary bolts. I have heard of fluted chambers being used to help combat this.

Also, our grips and straight pull handles are angled down and knurled to make them easy to grab with the index finger without totally releasing the pistol grip.

I know this may sound daft but good clean and fairly polished brass also helps, certainly the nickel plated cases in my BAR10 feed much better than standard .308 ammunition.

Try some moly grease on the spring and rod for a start, helped a load with my BAR15/10 springs.

The AK should be ok as they can be farely loose fitting but in reality it is a sum of small changes that makes an overall difference. We see few if any AKs on the CSR circuit to be fair.

Whatever you do with the spring, it needs to close and lock the bolt when hot and not ridden/forward assisted. If it is too weak it may not carry enough inertia to lock properly (which is how people riding the bolt on ARs get short strokes which leads to miss fires/strikes).
the Swiss Stgw57 used a fluted chamber to help with extraction (in part) but you wouldn't want to reload the cases! they come out black and distorted (admittedly the kick in the nuts from the ejector doesn't help either) if hard extration is an issue, possibly worth looking at this. although its too much trouble for me :D


Top
 Profile Send private message  
 
PostPosted: Mon Dec 10, 2018 7:01 pm 
Offline
User avatar

Joined: Tue Jan 01, 2013 8:32 pm
Posts: 3435
Location: Cambridgeshire
Home club or Range: EBSC
I believe the HK G3 also uses a fluted chamber ?

_________________
http://www.phoenixtactical.co.uk

RFD 2043 Cambridgeshire


Top
 Profile Send private message  
 
PostPosted: Mon Dec 10, 2018 7:08 pm 
Offline
Site Supporter Since 2016
User avatar

Joined: Wed Jun 25, 2014 9:45 pm
Posts: 1652
breacher wrote:
I believe the HK G3 also uses a fluted chamber ?

I believe that's correct, I remember reading on US forums that the G3 rifles have fluted chambers and that reloading for it is pointless unless you like buying brass a lot. The PTR 91 and CETME rifles also have fluted chambers.


Top
 Profile Send private message  
 
PostPosted: Mon Dec 10, 2018 7:35 pm 
Offline
Site Supporter 2019
User avatar

Joined: Sun Feb 10, 2013 4:02 pm
Posts: 471
Location: County Durham
Home club or Range: St.Giles Yarners. Teesdale Pistol & Rifle Club
WelshShooter wrote:
breacher wrote:
I believe the HK G3 also uses a fluted chamber ?

I believe that's correct, I remember reading on US forums that the G3 rifles have fluted chambers and that reloading for it is pointless unless you like buying brass a lot. The PTR 91 and CETME rifles also have fluted chambers.


I can confirm they did have fluted chambers. I think that is still the case, though unsure as it’s been a while.

Never use .308 brass in them!!

_________________
Royal Air Force definition of an explosion :- A loud bang followed by the going away of something that was there a moment ago.


Top
 Profile Send private message  
 
PostPosted: Tue Dec 11, 2018 12:41 am 
Offline
Site Supporter 2019
User avatar

Joined: Fri Oct 04, 2013 6:43 pm
Posts: 5936
Location: West of the Urals
Home club or Range: Classified
WelshShooter wrote:
breacher wrote:
I believe the HK G3 also uses a fluted chamber ?

I believe that's correct, I remember reading on US forums that the G3 rifles have fluted chambers and that reloading for it is pointless unless you like buying brass a lot. The PTR 91 and CETME rifles also have fluted chambers.


As does the Russian SVT-40 and the fluted chamber was the main reason why a straight-pull version that was being worked on by LDT in Luxembourg was put on hold due to very hard extraction.A lot of SVT shooters in the States only run steel cased ammunition in them as brass cases don't fair well at all in them!.

Image

_________________
"The only real power comes out of a long rifle." - Joseph Stalin


Top
 Profile Send private message  
 
PostPosted: Tue Dec 11, 2018 7:07 am 
Offline
Site Supporter Since 2018
User avatar

Joined: Sat Nov 06, 2010 9:09 pm
Posts: 9676
With my old Ruger Mini 14 straight pull I had a gunsmith weld a small section of rod onto the charging handle which he then screw cut and attached a Badger Ordnance type bolt handle. Just enough to give s good grasp but not look too out of place.

_________________
In 1978 I was told by my grand dad that the secret to rifle accuracy is, a quality bullet, fired down a quality barrel..... How has that changed?

Guns dont kill people. Dads with pretty Daughters do...!


Top
 Profile Send private message  
 
PostPosted: Tue Dec 11, 2018 12:00 pm 
Offline

Joined: Tue Sep 22, 2015 2:22 pm
Posts: 719
Home club or Range: HRA and LERA
snayperskaya wrote:
WelshShooter wrote:
breacher wrote:
I believe the HK G3 also uses a fluted chamber ?

I believe that's correct, I remember reading on US forums that the G3 rifles have fluted chambers and that reloading for it is pointless unless you like buying brass a lot. The PTR 91 and CETME rifles also have fluted chambers.


As does the Russian SVT-40 and the fluted chamber was the main reason why a straight-pull version that was being worked on by LDT in Luxembourg was put on hold due to very hard extraction.A lot of SVT shooters in the States only run steel cased ammunition in them as brass cases don't fair well at all in them!.

Image


Funilly enough I have some Federal .308 used by my lot that has clearly been fired in a rifle with a fluted chamber...I will ask some questions ;)


Top
 Profile Send private message  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 37 posts ]  Go to page Previous  1, 2, 3, 4  Next

All times are UTC


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group