Evening peeps,
Gotta question.....
I've just had my 308 re-barreled and so need to start from scratch on load development.
The original barrel was 24" and the new barrel is 28".
The question is that on Hogdons reloading chart they are using a 24" barrel, will the additional 4" make any difference as to my "starting load" /
I have been told that extra length will add a few FPS and can understand why, but I have no idea if this will alter pressures etc....
Thanks in advance and I promise I won't spend any more EU grants this week !
ttfn
the greek
Barrel length vs powder weight
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.
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.
Barrel length vs powder weight
Suffolk champion...50 mtr precision flinching champion
Howa 308 GRS stock
Uberti 1873 45 LC
Ruger Precision 6.5
Howa 308 GRS stock
Uberti 1873 45 LC
Ruger Precision 6.5
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DaveT
Re: Barrel length vs powder weight
Barrel characteristics aside (tighter or looser bore plus reamer offering longer or shorter throating etc) .....you should not need to worry about pressure differences.
You should benefit from more FPS as you note.
You should benefit from more FPS as you note.
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DaveB
- Posts: 1594
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Re: Barrel length vs powder weight
No, while the extra 4" of barrel length may give you a bit more velocity than what's quoted in the loading manual, it will not change pressure tot he extent that you need to change your starting loads from what is listed in the manual.
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