Having custom rifle built....WSM or regular mag?
02-12-2011, 03:24 PM
#21
Fork Horn
Join Date: Sep 2007
Location: Slippery Rock, Pa.
Posts: 393
Hodgdon load data:
300 RUM- 150gr bullet, 106.0 gr of RETUMBO *compressed load*= 3531fps--60,800psi
300 WIN- 150gr bullet, 78.0 gr of IMR 4831 *compressed load*= 3289fps-- 63,300psi
300 WSM- 150gr bullet, 74.0 gr of SUPRFORM= 3410fps--63,500psi
300 RSAUM - 150gr bullet, 65.5gr of H414 = 3201fps----62,800psi
300 RUM- 150gr bullet, 106.0 gr of RETUMBO *compressed load*= 3531fps--60,800psi
300 WIN- 150gr bullet, 78.0 gr of IMR 4831 *compressed load*= 3289fps-- 63,300psi
300 WSM- 150gr bullet, 74.0 gr of SUPRFORM= 3410fps--63,500psi
300 RSAUM - 150gr bullet, 65.5gr of H414 = 3201fps----62,800psi
02-12-2011, 03:42 PM
#22
Nontypical Buck
Join Date: Dec 2010
Location: Idaho
Posts: 1,081
No it wont, It does with a 150 or 165gr. bullet but step up to the heavier longer bullets were the B.C. is optimal, it has to be seated farther in the case because of the short action. You loose case capacity, which in turns means lower velocity. The bigger case will always come out on top. If you built it on a long action with a longer throat, so you could seat the bullets out farther, but you cant do that with a short action unless you have a single shot bolt gun.
Last edited by fritz1; 02-12-2011 at 03:47 PM.
02-12-2011, 03:53 PM
#23
Nontypical Buck
Join Date: Dec 2010
Location: Idaho
Posts: 1,081
02-12-2011, 03:53 PM
#24
Giant Nontypical
Join Date: Mar 2006
Location: ****ifornia
Posts: 5,052
No it wont, It does with a 150 or 165gr. bullet but step up to the heavier longer bullets were the B.C. is optimal, it has to be seated farther in the case because of the short action. You loose case capacity, which in turns means lower velocity. The bigger case will always come out on top. If you built it on a long action with a longer throat, so you could seat the bullets out farther, but you cant do that with a short action unless you have a single shot bolt gun.
02-12-2011, 03:55 PM
#25
Giant Nontypical
Join Date: Mar 2006
Location: ****ifornia
Posts: 5,052
02-12-2011, 04:36 PM
#26
Typical Buck
Join Date: May 2009
Location: Colorado
Posts: 797
Depending on the powder used. You can get 6 to 8 grains more powder in a 300 Win Mag case than you can a 300 WSM. So there is a bit of difference in reloading. Using the exact same powder in both cases the 300 Win Mag wins that argument hands down. Shoulder design may have the advantage to the short mag but if it out gains the Win Mag using the same powder charge then it also means it wins the pressure category too and that's not a good thing. I've studied both and the amount of difference isn't worth arguing about until you hit the reloading bench.
02-13-2011, 08:44 AM
#27
Spike
Join Date: Jan 2011
Location: montana
Posts: 36
i have 2 short mags one chambered 243 and a 300.my buddy is a competition shooter and has put these 2 guns together for me thet both have kreiger barrels and bat actions and hs precision stocks with 8 twist barrels and i had him make barrels short for easier hunting with out 200 yards the 300 punches holes at .750 for the 300 and the 243 is .675 thats good enough reason to own a short mag in my opion.
02-13-2011, 09:00 AM
#28
Giant Nontypical
Join Date: Mar 2006
Location: ****ifornia
Posts: 5,052
i have 2 short mags one chambered 243 and a 300.my buddy is a competition shooter and has put these 2 guns together for me thet both have kreiger barrels and bat actions and hs precision stocks with 8 twist barrels and i had him make barrels short for easier hunting with out 200 yards the 300 punches holes at .750 for the 300 and the 243 is .675 thats good enough reason to own a short mag in my opion.
02-13-2011, 06:02 PM
#30
Spike
Join Date: Jan 2011
Location: montana
Posts: 36