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22 LBC
Oct 4, 2013 5:53:15 GMT -8
Post by GLSHOOTER on Oct 4, 2013 5:53:15 GMT -8
Hi Greg! I have dabbled with the 204 rug, but not a 20 practical although i have read about them. If i maybe so bold to disagree with you on the 22-250 being the king of ubber fast 22 cal slingers. If you were to slightly twist my arm i would say unequivocally that the 220 swift would take that roll hands down.. But then again iam a swift fanboy.. But being that this is not a swift form or thread, ill refrain.. :-) I have a cmt upper and lower waiting for something special. Just as soon as i get this 243lbc shooting, I want to build another wildcat.. SO we shall see! Like Ritch mentioned above the Swift is faster but the 22-250 is a better cartridge from the aspects of availability of brass and rifles along with less case trimming. Nothing wrong with contrast and comparison at all. Now I happen to have a 22-250 that gets light use as it is on an XP100. Kind of cool. That being said I lucked into the Swift of the adventurous modern man. I nee a Savage for the new barrels and went on a thrirty minute hunt on the net. I found a varmint hunters dream in a 22-250AI. The perfect trade off. Lots of bras with virtually no case trimming and Swift velocities using Swift load data. What's not to like? As Ritch said in another post just hang around and maybe we can scare up something to fill the go fast and accurate bill. Greg
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22 LBC
Oct 4, 2013 8:18:50 GMT -8
Post by jonaddis84 on Oct 4, 2013 8:18:50 GMT -8
Can you elaborate when you say "only a fast 223"?
Not having any of the brass available to play with seating lengths Im only guessing. But shouldnt a 75 AMAX be able to be seated at mag length and still have enough bullet in the case? (This is assuming the freebore would be changed to handle the extra length)
Did you not end up being able to achieve anywhere close to those original velocity predictions with lighter bullets? IE 3700 w/55gn
I use the 53Vmax in my 22-250 because of the boat-tail for easy progressive reloading, and their BC is better than the 60gn Vmax also. If this cartridge could push one of those at even 3400 that would be awesome. I only load my 24" 22-250 bolt gun to high 3400's, mostly because its a 9 twist, but that thing absolutely wrecks prairie dogs. We can only guess that its the extreme rpm's of the bullet that is making it perform even better than a normal 22-250 running much faster.
Thanks for the info
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22 LBC
Oct 4, 2013 10:46:31 GMT -8
Post by jonaddis84 on Oct 4, 2013 10:46:31 GMT -8
Sorry to bombard the thread...
Did some measurements based on what info I could find. If we use a 75 amax as an example. If you loaded one to where the boattail/bearing surface junction was at the neck/shoulder junction in the case, you should have roughly an OAL of +-2.2 (the length of boattail was estimated at .150"). Now the base to ogive measures .471 according to Bryan Litz. If you add that to the distance from the boltface to neck/shoulder junction you get 1.771. The leade into the rifling starts at 1.64". Now, this isnt necessarily where the ogive will contact the lands, but its relatively close, probably a few thou longer. Seems if the freebore was extended a tad further, you could get it closer to mag length and gain some case capacity if you want to shoot the 75 amax
This is all moot if you are trying to shoot the heavy's like the 90 class bullets, as this freebore may actually work for them since they are so much longer, just depends on which bullet.
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22 LBC
Oct 4, 2013 11:03:50 GMT -8
Post by GLSHOOTER on Oct 4, 2013 11:03:50 GMT -8
We are already shooting at MAG lenght. Freebore is more than ample in the BHW reamer. Bolt thrust and pressure limits on the Grendel brass are limiting factors. You just can't pour enough coal in that boiler room with the Grendel case pressures. There is an alternative available and it will show up later today.
Enjoy the show.
Greg
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22 LBC
Oct 4, 2013 15:13:29 GMT -8
Post by inkballedtarget on Oct 4, 2013 15:13:29 GMT -8
We are already shooting at MAG lenght. Freebore is more than ample in the BHW reamer. Bolt thrust and pressure limits on the Grendel brass are limiting factors. You just can't pour enough coal in that boiler room with the Grendel case pressures. There is an alternative available and it will show up later today. Enjoy the show. Greg Where can see it show up?! I appreciate all of yalls hard work, Calvin
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melbakid
Junior Member
Lefties Unite
Posts: 31
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22 LBC
Oct 6, 2013 9:02:24 GMT -8
Post by melbakid on Oct 6, 2013 9:02:24 GMT -8
Talking about uber fast 22's, what about the .22-.243 Middlestadt? My uncle in Idaho use to work for Middlestadt down in SoCal back in the day. So I had him put together one for me 15 years ago on a Savage 110CL action. First day I shot it I killed two nice rockchucks northeast of Battle Mountain, Nevada. It is amazingly fast and accurate. Mine has a 1 in 12 twist rate so I only shoot 40 to 55 grain bullets at 4200 to 3800 fps depending on bullet weight and what ever powder isavailable. To bad it won't fit in the AR15 action.
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22 LBC
Oct 6, 2013 10:15:43 GMT -8
via mobile
Post by GLSHOOTER on Oct 6, 2013 10:15:43 GMT -8
Talking about uber fast 22's, what about the .22-.243 Middlestadt? My uncle in Idaho use to work for Middlestadt down in SoCal back in the day. So I had him put together one for me 15 years ago on a Savage 110CL action. First day I shot it I killed two nice rockchucks northeast of Battle Mountain, Nevada. It is amazingly fast and accurate. Mine has a 1 in 12 twist rate so I only shoot 40 to 55 grain bullets at 4200 to 3800 fps depending on bullet weight and what ever powder isavailable. To bad it won't fit in the AR15 action. Those are nice and I thought about doing one. There are many hot ones out there if a fellow wants to spend the money on equipment and replacing it periodically. The new 22X68 is going to be carrying the mail without eating up barrels at a rapid pace. Greg
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22 LBC
Oct 14, 2013 21:33:56 GMT -8
Post by inkballedtarget on Oct 14, 2013 21:33:56 GMT -8
So what kind of velocities were you guys seeing out of a 22 LBC with 24" barrel with 50 grain bullets?
Thanks! Calvin
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Deleted
Deleted Member
Posts: 0
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22 LBC
Oct 15, 2013 2:16:19 GMT -8
Post by Deleted on Oct 15, 2013 2:16:19 GMT -8
So what kind of velocities were you guys seeing out of a 22 LBC with 24" barrel with 50 grain bullets? Thanks! Calvin We were in the 3500 FPS range. When you go much faster the head thrust starts to be a factor.
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22 LBC
Aug 15, 2014 11:09:53 GMT -8
Post by roosterronn on Aug 15, 2014 11:09:53 GMT -8
Hi Greg! I have dabbled with the 204 rug, but not a 20 practical although i have read about them. If i maybe so bold to disagree with you on the 22-250 being the king of ubber fast 22 cal slingers. If you were to slightly twist my arm i would say unequivocally that the 220 swift would take that roll hands down.. But then again iam a swift fanboy.. But being that this is not a swift form or thread, ill refrain.. :-) I have a cmt upper and lower waiting for something special. Just as soon as i get this 243lbc shooting, I want to build another wildcat.. SO we shall see! Like Ritch mentioned above the Swift is faster but the 22-250 is a better cartridge from the aspects of availability of brass and rifles along with less case trimming. Nothing wrong with contrast and comparison at all. Now I happen to have a 22-250 that gets light use as it is on an XP100. Kind of cool. That being said I lucked into the Swift of the adventurous modern man. I nee a Savage for the new barrels and went on a thrirty minute hunt on the net. I found a varmint hunters dream in a 22-250AI. The perfect trade off. Lots of bras with virtually no case trimming and Swift velocities using Swift load data. What's not to like? As Ritch said in another post just hang around and maybe we can scare up something to fill the go fast and accurate bill. Greg
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22 LBC
Jan 11, 2017 17:02:05 GMT -8
via mobile
Post by tonythetiger on Jan 11, 2017 17:02:05 GMT -8
Bringing this thread back from the dead. Did anyone ever experiment with 75+ grain bullets, and if so, what kind of velocities are possible?
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22 LBC
Jan 11, 2017 18:38:28 GMT -8
via mobile
Post by GLSHOOTER on Jan 11, 2017 18:38:28 GMT -8
Bringing this thread back from the dead. Did anyone ever experiment with 75+ grain bullets, and if so, what kind of velocities are possible? Not me but I see some 77 Noslers in the future. Greg
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22 LBC
Jan 11, 2017 19:04:51 GMT -8
via mobile
Post by tonythetiger on Jan 11, 2017 19:04:51 GMT -8
Excellent! Keep us posted.
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