I'm trying to work up a .303 load to match the service load in terms of velocity; I know that this was 2440 fps. My problem is that I have difficulty in getting access to a chronograph because they cannot be used at Altcar. I'm loading a 174 SMK with 41 grains and 41.5 grains of N140 and firing out of an SMLE. Has anyone had any experience of this load and is able to give me an indication of its velocity?
TIA
W
Estimated velocity for a .303 load please.
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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.
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.
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mag41uk
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Re: Estimated velocity for a .303 load please.
I use 40.8gn in a no4 and its about 2450fps IIRC.
Shoots fine out to 900yds, not been any further!
On Lapua website 41.7 is top and should be 2566fps.
How come you cant use a chrono?
HTH
Tony
Shoots fine out to 900yds, not been any further!
On Lapua website 41.7 is top and should be 2566fps.
How come you cant use a chrono?
HTH
Tony
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Watcher
Re: Estimated velocity for a .303 load please.
Tony,
Thanks that's useful guidance.
I think the chrono thing is something to do with putting any obstruction forward of the muzzle. It'll be an Army rule although I haven't checked specially; its just a given that everyone works to.
Matthew
Thanks that's useful guidance.
I think the chrono thing is something to do with putting any obstruction forward of the muzzle. It'll be an Army rule although I haven't checked specially; its just a given that everyone works to.
Matthew
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tackb
Re: Estimated velocity for a .303 load please.
You could work it back from ballistic data if you can get accurate drop measurements at various ranges? It won't be 100% accurate but it's probably the best you'll do till you can get the loads across a chrono ?
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