.308 diameter bullets in my 303

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   I tried some .308 diameter 150 grain bullets in my No5 Mk1, they shoot to the same point of impact as the .312 diameter  150 grain bullets do.
I can use these in a pinch if I run out of .312 diameter Hornady's.

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
303carbine Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: January 29 2006 Location: Canada Status: Offline Points: 376	Post Options Post Reply Quote 303carbine Report Post Thanks(0) Quote Reply Topic: .308 diameter bullets in my 303 Posted: January 27 2011 at 3:38am
	I tried some .308 diameter 150 grain bullets in my No5 Mk1, they shoot to the same point of impact as the .312 diameter 150 grain bullets do. I can use these in a pinch if I run out of .312 diameter Hornady's.

A square 10 Members Profile Send Private Message Find Members Posts Add to Buddy List Special Member Donating Member Joined: December 12 2006 Location: MN , USA Status: Offline Points: 16998	Post Options Post Reply Quote A square 10 Report Post Thanks(0) Quote Reply Posted: January 27 2011 at 11:21am
	good to know , did you notice any irregularity ?

Cookie Monster Members Profile Send Private Message Find Members Posts Add to Buddy List Special Member Joined: January 22 2006 Location: United States Status: Offline Points: 7510	Post Options Post Reply Quote Cookie Monster Report Post Thanks(0) Quote Reply Posted: January 28 2011 at 10:16am
	They will work with some accuracy in a tight barrel at first, however it will cause premature throat erosion among other long term issues. Remember they make the correct size bullets for a reason.

A square 10 Members Profile Send Private Message Find Members Posts Add to Buddy List Special Member Donating Member Joined: December 12 2006 Location: MN , USA Status: Offline Points: 16998	Post Options Post Reply Quote A square 10 Report Post Thanks(0) Quote Reply Posted: January 28 2011 at 11:55am
	good point - i have much to learn about ballistics , and thats why i read these forums - thank you

White Rhino Members Profile Send Private Message Find Members Posts Add to Buddy List Special Member Donating Member Joined: May 05 2006 Location: United States Status: Offline Points: 5153	Post Options Post Reply Quote White Rhino Report Post Thanks(0) Quote Reply Posted: January 28 2011 at 10:57pm
	Thats a lot of unused space when You compare the 2 size projectiles .... .308" - .312" =.004" Dont look like Much to us ...But when You are talking gas escaping under pressure Your talking about a very large passage at .004" and erosion will occur... along with many other things ..... Really wish I had some pictures of what Gas under pressure does to a mating surface that has a gap of a very few thousands of an inch .....
	"White Rhino" "Everybody's got to believe in something. I believe I'll have another beer." --W. C. Fields

Cookie Monster Members Profile Send Private Message Find Members Posts Add to Buddy List Special Member Joined: January 22 2006 Location: United States Status: Offline Points: 7510	Post Options Post Reply Quote Cookie Monster Report Post Thanks(0) Quote Reply Posted: January 29 2011 at 3:35am
	Exactly Rhino

303carbine Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: January 29 2006 Location: Canada Status: Offline Points: 376	Post Options Post Reply Quote 303carbine Report Post Thanks(0) Quote Reply Posted: January 30 2011 at 11:53am
	I would only use the smaller diameter bullets in a pinch if I had to, I have several hundered 311 and 312 diameter slugs for my jungle carbine. There was nothing different in the way of accuracy while shooting the 308 diameter bullets, no keyholing or anything out the ordinary.

Cookie Monster Members Profile Send Private Message Find Members Posts Add to Buddy List Special Member Joined: January 22 2006 Location: United States Status: Offline Points: 7510	Post Options Post Reply Quote Cookie Monster Report Post Thanks(0) Quote Reply Posted: January 30 2011 at 12:16pm
	You would'nt at first 303 but after a few rounds that Hot gas will etch the throat and damage you chamber.