Horn Seeker
New member
how much velocity do I lose going from a 24 to a 22 inch barrel on my 300? I just like short barrels.... Anyone got an idea??
300 Win with 22 inch barrel?
- Thread starter Horn Seeker
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krshunter
Active member
Drake hit it pretty close. I know a gunsmith who did tests with .308 barrels and he lost 22-24fps per inch he took off. Said loss will depend on several other factors including temp, altitude, twist, etc.
Horn Seeker
New member
And I wonder if its any more or less for a bigger magnum?? I am not worried about 60 fps... I think I'll go with the 22 inch barrel. Now I just want to find a nice, light, comfortable, synthetic stock...
Any ideas?
Any ideas?
belly-deep
Active member
- Joined
- Oct 31, 2009
- Messages
- 3,454
I would think you'd lose a bit more with a magnum because they typically use slower burning powder.
noharleyyet
Well-known member
I'd leave it at 24 and slip it in a mcmillan edge.
lamdilligaf
Member
For my son's science project we took a .243 winchester with a 22 inch barrel and cut one inch sections off down to the legal limit of 16 inches and chronographed each change. We were using 100 grain spitzers which were just over 300fps out of the 22 inch barrel. At 16 inches we were just under 2600 fps. 400 fps in 6 inches. Roughly 66 fps per inch. That said, go to this site http://cc.bingj.com/cache.aspx?q=ve...09&mkt=en-US&setlang=en-US&w=b085eb62,de78727 and you will find a SWAT test of the 308 and the 300Win where they went from 26 inches to 18 inches in one inch increments. With the 308 they had virtually no velocity change. With the 300 Win, they did not see a change until they went below 22 inches. The change increases the shorter you go, and is the greatest with heavy for caliber loads with slow burning powders.
That's a very interesting article.
Here's a cleaner version:
http://www.tacticaloperations.com/SWATbarrel/
Here's a cleaner version:
http://www.tacticaloperations.com/SWATbarrel/
Horn Seeker
New member
wow, Great article....
noharleyyet
Well-known member
Good stuff Oak.
Horn Seeker
New member
OK, curious... I mentioned this to another guy and he said they got those results because they were using semi-autos with light loads...
Any thoughts on this??? Never mind, just looked at the article... they are using bolt guns.....
Any thoughts on this??? Never mind, just looked at the article... they are using bolt guns.....
Khunter
Well-known member
good stuff. I have a 300 mag and wonder about rechambering it to 300WSM I w3as told it could be done wiht the existing barrel but I'd loose some lenght. that article has me thinking that would be just fine as far as velocity is concerned. Anyone rechamber their guns similarly, using the same barrel in finished product?
Horn Seeker
New member
You know Kh... from what I've read, the standard 300 is every bit the round the WSM is..... I think it would be a waste of money... JMO
Bambistew
Well-known member
You would end up with an abortion of sorts.... You're going from a long action to a short action, feeding issues will result.
IF you had a short action rifle and a 300WM barrel, you could cut it and rechamber and put it on your short action... if it was set up for a short mag. However this would be a huge waste of money since you can find brand new 'take off' barrels for a 1/10th of the price it would cost you to dink around rechambering and fitting a 300wm barrel.
Khunter
Well-known member
thanks guys. must be the pain meds from ankle surgery talkin'
http://www.riflebarrels.com/articles/bullets_ballastics/long_barrel_velocity.htm
This is a good article on velocity VS. barrel length by Dan Lilja. As you will see, the change in length has a varying effect on larger case capacity rounds than it does on lesser case capacity rounds. His variations with the magnum case are larger than those experienced with the .308 win.
This is a good article on velocity VS. barrel length by Dan Lilja. As you will see, the change in length has a varying effect on larger case capacity rounds than it does on lesser case capacity rounds. His variations with the magnum case are larger than those experienced with the .308 win.
