Long Range Canuck
CGN frequent flyer
- Location
- Athabasca Alberta aka God's Country
I'm wondering what a .50BMG brass necked down to handle a .338 lapua bullet would do??
Thinking of building in a new caliber.
- Thread starter Longshot
- Start date
- Location
- Ft. Mac. Alberta
It's been done.Long Range Canuck said:
Check withh Richard at Alberta Wildcats.
I believe his friend Kirby Allen has built a few.....
Cat
Mystic Precision
CGN Ultra frequent flyer
- Location
- Summerland, BC
The necked down BMG's have been around for a while. McMillan was playing with them before their stock building days.
Big 338's include the 338 416Rigby Improved and 338 Chey Tac.
How about the 300gr MK at 3300 to 3450fps?
The necked down and shortened 416 is the 416 Barrett. A big hammer that is problematic for Canucks.
Jerry
Big 338's include the 338 416Rigby Improved and 338 Chey Tac.
How about the 300gr MK at 3300 to 3450fps?
The necked down and shortened 416 is the 416 Barrett. A big hammer that is problematic for Canucks.
Jerry
Long Range Canuck
CGN frequent flyer
- Location
- Athabasca Alberta aka God's Country
Yes Im aware of the .416 Barrett, had actually thought of one before I got my .50BMG but it is a shortend .50 case. I was thinking something full size 50 for capacity necked down to the .338 lapua bullet. Not shortend in case length.
From what I know of the .408 Cheytac they had high expectations but from what I understand, and may be wrong, it never did meet its expectations, I have to re-check unless someone already knows but I THINK the .338 Lapua will outperform the .408 Cheytac.
From what I know of the .408 Cheytac they had high expectations but from what I understand, and may be wrong, it never did meet its expectations, I have to re-check unless someone already knows but I THINK the .338 Lapua will outperform the .408 Cheytac.
Mystic Precision
CGN Ultra frequent flyer
- Location
- Summerland, BC
On paper the Chey Tac will outperform the Lapua. In fact, the 338-300RUM/ 338 Mystic/338 Edge will too.
The problem with the CheyTac is lack of support and initial QC problems. to my knowledge there is still only one bullet maker and they had serious issues at the beginning.
The info/mag articles suggest that these productions are now over, but that was the yip at the beginning too. Also the cost per bullet from the lone manf is staggering.
Will be interesting to see if the Barrett gets more industry support. Right now there is Barnes making bullets. Not sure if anyone has jumped on board yet. Likely they will as Barrett has some industry clout and his products are well represented with a solid track record.
If the US forces pick it up as a BMG replacement, look out. could overshadow the Lapua.
The Chey Tac was a boutique one horse show project that ran into all sorts of internal problems. then there was all sorts of over hype which didn't help any.
The 338BMG has been done. Do a search and the McMillans will come up.
With extremely short barrel life and problems with suitable powder (no one likes loading wet sawdust), it wouldn't have satisfied the military. It is also likely to overstress the 300gr MK. Not much likes going over 3600fps.
Jerry
The problem with the CheyTac is lack of support and initial QC problems. to my knowledge there is still only one bullet maker and they had serious issues at the beginning.
The info/mag articles suggest that these productions are now over, but that was the yip at the beginning too. Also the cost per bullet from the lone manf is staggering.
Will be interesting to see if the Barrett gets more industry support. Right now there is Barnes making bullets. Not sure if anyone has jumped on board yet. Likely they will as Barrett has some industry clout and his products are well represented with a solid track record.
If the US forces pick it up as a BMG replacement, look out. could overshadow the Lapua.
The Chey Tac was a boutique one horse show project that ran into all sorts of internal problems. then there was all sorts of over hype which didn't help any.
The 338BMG has been done. Do a search and the McMillans will come up.
With extremely short barrel life and problems with suitable powder (no one likes loading wet sawdust), it wouldn't have satisfied the military. It is also likely to overstress the 300gr MK. Not much likes going over 3600fps.
Jerry
HeadDamage, do you need to buy factory ammo? If not, I think the 6.5x57, the 6.5-'06 or the 6.5-284 would be better at the long range. It seems like the heavier 6.5 bullets need to run around 2800-2900 fps. I know the Mystic will do it; but you're breathing pretty hard on it. A little more powder capacity makes it a bit easier.
Mystic Precision
CGN Ultra frequent flyer
- Location
- Summerland, BC
Me thinks that 17BMF is a whole bunch of fantasy and great use of sizing dies.
If you could make 17 cal bullet to handle that velocity, you wouldn't need a case larger then an 06 to get you to these velocities if they are possible. We simply don't have powders slow enough.
I don't think you can go faster then the expansion of burning powder which is around 5000ish fps (looking for some correct data on this).
Now if you were to use a sabot, then you could start approaching these hyper velocities. However, accuracy is likely to stink.
Jerry
If you could make 17 cal bullet to handle that velocity, you wouldn't need a case larger then an 06 to get you to these velocities if they are possible. We simply don't have powders slow enough.
I don't think you can go faster then the expansion of burning powder which is around 5000ish fps (looking for some correct data on this).
Now if you were to use a sabot, then you could start approaching these hyper velocities. However, accuracy is likely to stink.
Jerry
Splatter said:
The problem is that the BCRA only allows military rounds in the sniper/precision shoot so it has to have been used by some military some where and you need to be able to show some decent evidence of this if it is something odd. Also no magnums allowed.
If not for the above rules I'd go for 260rem or something in a 338.
Ha Steve you know you can keep up with me and more anyday.
And the rule the last couple of years has been any caliber in open class.Except magnums which I think we weren't allowed due to range control.Might be different now.But the idea was to keep the exotic stuff away from the tac shooters who were using only issued .223s and .308s.Besides most of the guys who shoot with those calibers already have lots of matches to shoot in.The idea was to make the .223s and .308s the standard and for people to compete on a more level playing field.
And the rule the last couple of years has been any caliber in open class.Except magnums which I think we weren't allowed due to range control.Might be different now.But the idea was to keep the exotic stuff away from the tac shooters who were using only issued .223s and .308s.Besides most of the guys who shoot with those calibers already have lots of matches to shoot in.The idea was to make the .223s and .308s the standard and for people to compete on a more level playing field.
