155 grn 308 load velocity with 26 inch barrel

This section is for reloading and ammunition only, all loads found in here are used strictly at your own risk, if in doubt ask again.
All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should treated as suspect and not used.

Moderator: dromia

Forum rules
All handloading data posted on Full-Bore UK from 23/2/2021 must reference the published pressure tested data it was sourced from, posts without such verification will be removed.
Any existing data without such a reference should be treated as suspect and not used.

Use reloading information posted here at your own risk. This forum (http://www.full-bore.co.uk) is not responsible for any property damage or personal injury as a consequence of using reloading data posted here, the information is individual members findings and observations only. Always verify the load data and be absolutely sure your firearm can handle the load, especially older ones. If in doubt start low and work your way up.
Post Reply
Message
Author
toffe wrapper
Posts: 580
Joined: Thu Mar 08, 2012 8:46 pm
Contact:
Contact toffe wrapper

155 grn 308 load velocity with 26 inch barrel

#1 Post by toffe wrapper »

Can any one help with a rough guide to the fps my 308 test load will be doing. Due to the perfect weather today the chrony stayed at home.
I had no signs of excess pressure with the following load.
155 grn SMK 2156 over 46.5 grn Varget CCI 200 large rifle primer in new Lapua cases COAL 2.85
I know all rifles and loads vary but just thought I would ask

TW
Top
User avatar
dromia
Site Admin
Posts: 20224
Joined: Sat Nov 06, 2010 4:57 am
Home club or Range: The Highlands of Scotland. Cycling Proficiency 1964. Felton & District rifle club. Teesdale Pistol and Rifle club.
Location: Sutherland and Co Durham
Contact:
Contact dromia

Re: 155 grn 308 load velocity with 26 inch barrel

#2 Post by dromia »

Ql shows a compressed load, close to maximum with a velocity of 2926 fps.

Knowing barrel length and case capacity would help refine this prediction.
Image

Come on Bambi get some

Imperial Good Metric Bad
Analogue Good Digital Bad

Fecking stones

Real farmers don't need subsidies

Cow's farts matter!

For fine firearms and requisites visit
http://www.pukkabundhooks.com/
Top
User avatar
dromia
Site Admin
Posts: 20224
Joined: Sat Nov 06, 2010 4:57 am
Home club or Range: The Highlands of Scotland. Cycling Proficiency 1964. Felton & District rifle club. Teesdale Pistol and Rifle club.
Location: Sutherland and Co Durham
Contact:
Contact dromia

Re: 155 grn 308 load velocity with 26 inch barrel

#3 Post by dromia »

OK got the barrel length, that drops the velocity prediction to 2876fps.
Image

Come on Bambi get some

Imperial Good Metric Bad
Analogue Good Digital Bad

Fecking stones

Real farmers don't need subsidies

Cow's farts matter!

For fine firearms and requisites visit
http://www.pukkabundhooks.com/
Top
toffe wrapper
Posts: 580
Joined: Thu Mar 08, 2012 8:46 pm
Contact:
Contact toffe wrapper

Re: 155 grn 308 load velocity with 26 inch barrel

#4 Post by toffe wrapper »

Dromia

Thank you for the info this was the highest load I made of my test batch lee manual said 47c for max so stopped short of that. Do not know case capacity.


TW
Top
IainWR
Posts: 1424
Joined: Tue Feb 22, 2011 12:43 pm
Home club or Range: NRA Bisley
Location: Bisley
Contact:
Contact IainWR

Re: 155 grn 308 load velocity with 26 inch barrel

#5 Post by IainWR »

46 gr Vhit N140 behind a 2156 out of RUAG cases with CCI Benchrest primers gave us 2950 ft'sec for the GB team a month ago, out of 30" match barrels.

Iain
Top
toffe wrapper
Posts: 580
Joined: Thu Mar 08, 2012 8:46 pm
Contact:
Contact toffe wrapper

Re: 155 grn 308 load velocity with 26 inch barrel

#6 Post by toffe wrapper »

If I can get to 2850 > 2900 safe with good groups I will be happy, that will mean enough elevation on the scope to get to 1000M on occasion. But I am not going to push it and will not give up accuracy just for a bit more fps.

TW
Top
toffe wrapper
Posts: 580
Joined: Thu Mar 08, 2012 8:46 pm
Contact:
Contact toffe wrapper

Re: 155 grn 308 load velocity with 26 inch barrel

#7 Post by toffe wrapper »

Fired this over a chrono today and it was doing 2849 so will play around + or - 46.5 to find a good accurate load,


TW
Top
Dangermouse

Re: 155 grn 308 load velocity with 26 inch barrel

#8 Post by Dangermouse »

I do not have my notes to hand from when I had my 26" barrel, but I suspect that I was not getting much over 2700-2800fps.
Remember that whatever testing that you are doing at the moment is on reasonably cold days, you need to allow for your rounds to be able to cope with summer and unexpectedly hot days sitting out on the range.

Good luck with your testing,

DM
Top
User avatar
dromia
Site Admin
Posts: 20224
Joined: Sat Nov 06, 2010 4:57 am
Home club or Range: The Highlands of Scotland. Cycling Proficiency 1964. Felton & District rifle club. Teesdale Pistol and Rifle club.
Location: Sutherland and Co Durham
Contact:
Contact dromia

Re: 155 grn 308 load velocity with 26 inch barrel

#9 Post by dromia »

Not a bad prediction from QL there. :good:
Image

Come on Bambi get some

Imperial Good Metric Bad
Analogue Good Digital Bad

Fecking stones

Real farmers don't need subsidies

Cow's farts matter!

For fine firearms and requisites visit
http://www.pukkabundhooks.com/
Top
Dangermouse

Re: 155 grn 308 load velocity with 26 inch barrel

#10 Post by Dangermouse »

Dromia,

I am not familiar with / do not have that softwear, are you able to add 20 deg Celsius and see what difference that makes?

DM
Top
Post Reply

Return to “Reloading and Ammunition”

Who is online

Users browsing this forum: No registered users and 3 guests