Yup shooting it in PRS you can put a lot of rounds down it. I have shot stages of 20 rounds in 60 seconds. Putting 150-200 rounds through it in a weekend. Probably more than some hunters would put through them in a couple years lol But as mentioned a different game. Not only different rates of fire but different bullets, powders and loads. Most competitive shooters want to be near the top as far as velocity with heavier bullets for 1000+ yard shots where a hunter taking a 200 yard shot can be at a lower velocity with a lower weight bullet. Definitely will get different barrel life.
243 barrel life?
- Thread starter Josh11
- Start date
Agree.
Might consider hybrid 100v powder to drastically increase barrel life. (Heat of explosion 3545)
Based on the barrel life spreadsheet H100v will increase barrel life by approximately 800 rounds over H1000 and nearly 600 more rounds than imr4064 when loaded to similar speeds.
It is a powder that may often overlooked for barrel life, speed and accuracy.
The powder is readily available and works well in many calibers
Based on the barrel life spreadsheet H100v will increase barrel life by approximately 800 rounds over H1000 and nearly 600 more rounds than imr4064 when loaded to similar speeds.
It is a powder that may often overlooked for barrel life, speed and accuracy.
The powder is readily available and works well in many calibers
Grimstod
Machinist, Designer, and Shooter.
Give this barrel life calculator a try. There is a link to download it on the page and the article gives instruction on how to use it.
https://65brlapua.wordpress.com/2017/09/14/estimating-barrel-life/
https://65brlapua.wordpress.com/2017/09/14/estimating-barrel-life/
N-160 is rated to be on the cooler side of the burning chart but so far for me, not so good on the barrel life. N-165, different story, works very well.
H-1000, still on my 1st barrel with it, have to wait and see.
HV-100, I'm interested but haven't tried it yet but yes, it's on the cooler side from the charts.
H-1000, still on my 1st barrel with it, have to wait and see.
HV-100, I'm interested but haven't tried it yet but yes, it's on the cooler side from the charts.
Only problem is that it is temp sensitive. Not the best choice for shooting in differing temps.
urbanrifleman
Site $$ Sponsor
He may be as I don't know him but more likely his loads allow for longer life which gives his experience as it not burning barrels. Not all do as some push the round to its limits which cuts barrel life a good deal. It's give and take depending on performance needed.
urbanrifleman
Site $$ Sponsor
Also wise.
T
I'm not wise just have shot a lot of experience with 243 since I've been shooting it since the late 60's. It was my first centerfire rifle but that rifle is long gone but over the years I've owned several Winchester, Remington, Tikka and Browning 243s.
I've load normally at the mid point of loading data, not to preserve the barrel necessiarly but because I get my best accuracy with those loads. I've never shot my rifles in rapid succession (hot) because I'm only interested in cold barrel shots since I'm a hunter.
I do shoot alot (about 1,000 centerfire round / years spread over several different rifles and different calibers). Beside hunting I visit the range twice a week to practice but I normally only shoot 10 rounds per visit and it takes me about an hour to shoot them letting the barrel cool between shots. I focus on every shot simulating a hunting situation shooting in a field position which for me is shooting off shooting sticks. I record, score, and evaluate every shot because every shot counts. In hunting you may not get a second shot. I try to learn from each shot and improve my technique.
In my various 243's (I currently have four) I shoot mild loads of IMR 4064, Varget and H4895 with 80 and 85 grain bullets and IMR 4350 with bullet over 85 grains. I'm not a competitive target shooter so my accuracy standards are probably not as tight. If I could ever figure out how to post pictures on this site with my old computer I'd post some targets from some of my 'burned out' 243 barrels.
I'm not wise just have shot a lot of experience with 243 since I've been shooting it since the late 60's. It was my first centerfire rifle but that rifle is long gone but over the years I've owned several Winchester, Remington, Tikka and Browning 243s.
I've load normally at the mid point of loading data, not to preserve the barrel necessiarly but because I get my best accuracy with those loads. I've never shot my rifles in rapid succession (hot) because I'm only interested in cold barrel shots since I'm a hunter.
I do shoot alot (about 1,000 centerfire round / years spread over several different rifles and different calibers). Beside hunting I visit the range twice a week to practice but I normally only shoot 10 rounds per visit and it takes me about an hour to shoot them letting the barrel cool between shots. I focus on every shot simulating a hunting situation shooting in a field position which for me is shooting off shooting sticks. I record, score, and evaluate every shot because every shot counts. In hunting you may not get a second shot. I try to learn from each shot and improve my technique.
In my various 243's (I currently have four) I shoot mild loads of IMR 4064, Varget and H4895 with 80 and 85 grain bullets and IMR 4350 with bullet over 85 grains. I'm not a competitive target shooter so my accuracy standards are probably not as tight. If I could ever figure out how to post pictures on this site with my old computer I'd post some targets from some of my 'burned out' 243 barrels.
What is the original source for all of these powder burn temps? I know it is in the barrel temp calculator, but I have yet to see the original source of that information.
Im surprised and intrigued to see the H-100V is sub 3600kj/kg. That might be a good powder for my 6 SLR.
Im surprised and intrigued to see the H-100V is sub 3600kj/kg. That might be a good powder for my 6 SLR.
The heat potential is posted on quickload. I assume that it is calculated by the manufacturer or an independent lab. The spreadsheet has approximate figures posted.
I have found it to be a good powder for my 22-250, 243, 6.5cm, 308 and 300wm.
I agree that if shooting 500+ yards that h4350 would be more suitable for temp stability preventing POI shifts.
But as far as shorter ranges and hunting it's a hard powder to beat.
3800fps with .5" groups out of my 22-250 have been enjoyable.
Speaking of "barrel life" here is a good article.
Very interesting MrBottleneck - thanks for posting those pages. 14,000 rounds before groups started to open up and 23,000 rounds in total! It shows how little wear the combination of .30 calibre and 39,000 psi pressure produces.
IIRC, the Finnish rebated boat-tail D-series bullet used here (and still available in a few versions from Lapua) was originally designed and developed in the 1920s to provide enhanced effective range whilst reducing barrel wear in 7.62X53R machine guns. The 'streamlined' bullets that several countries had adopted late in WW1 or shortly afterwards had acquired a reputation for giving an extra 1,000 metres range from MGs but a cost of significantly reduced barrel life. The RBT form supposedly produced a win-win result. It's also still occasionally claimed by proponents of the rebated form that it copes better with barrel throat wear.
(However all sorts of claims - good and bad - used to be made about various bullet forms, many of which we now know are simply wrong. For instance, when I started shooting military rifles back in the 80s, there was still a widespread belief in UK Historic Arms shooting circles that BT designs didn't work in rifles chambered for the similar .303 British cartridge because a flat base was needed to 'upset' in the bore and fit the rifling properly. That's not an argument you hear often these days! It may actually have had a basis in reality but for a different reason - the highly erosive double-based 'cordite' propellant used in the British 303 Mk VII ball rifle cartridge wore throats out at a frightening rate and often left them very rough too. It's likely that the standard flat-base 174gn FMJ coped with this wear better than the higher pressure 190gn FMJBT round developed for machine guns.)
IIRC, the Finnish rebated boat-tail D-series bullet used here (and still available in a few versions from Lapua) was originally designed and developed in the 1920s to provide enhanced effective range whilst reducing barrel wear in 7.62X53R machine guns. The 'streamlined' bullets that several countries had adopted late in WW1 or shortly afterwards had acquired a reputation for giving an extra 1,000 metres range from MGs but a cost of significantly reduced barrel life. The RBT form supposedly produced a win-win result. It's also still occasionally claimed by proponents of the rebated form that it copes better with barrel throat wear.
(However all sorts of claims - good and bad - used to be made about various bullet forms, many of which we now know are simply wrong. For instance, when I started shooting military rifles back in the 80s, there was still a widespread belief in UK Historic Arms shooting circles that BT designs didn't work in rifles chambered for the similar .303 British cartridge because a flat base was needed to 'upset' in the bore and fit the rifling properly. That's not an argument you hear often these days! It may actually have had a basis in reality but for a different reason - the highly erosive double-based 'cordite' propellant used in the British 303 Mk VII ball rifle cartridge wore throats out at a frightening rate and often left them very rough too. It's likely that the standard flat-base 174gn FMJ coped with this wear better than the higher pressure 190gn FMJBT round developed for machine guns.)
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