There are lighter bullets that have a higher BC (or one slightly lower) than the 240 SMK. The JLK 210 VLD Long BT, for example (0.671 vs. 0.647 in the new Litz book). You would be able to drive itn faster and it would probably let you use a few of the faster burning powders.
A new barrel burner is created
- Thread starter alberta tactical rifle
- Start date
precision talk
let me ask you guys this. when youre shooting at longer ranges, do you prefer to plant a few around the bullseye youre going for, or would you prefer to be 5 inches off the target but to score a really tight group?
let me ask you guys this. when youre shooting at longer ranges, do you prefer to plant a few around the bullseye youre going for, or would you prefer to be 5 inches off the target but to score a really tight group?
I like the "barrel burners" - I have a 6.5 RUM (formerly a 6.5-300 Win Mag) and a 300 RUM. Won't its case capacity be less than the 30/378 Weatherby? I don't recall that round being capable of moving anything heavier than 200 grs faster than 3500 fps, even with a full case of H870 or US869. Very interested to see how this pans out.
rnbra-shooter
CGN Ultra frequent flyer
- Location
- New Brunswick
@uchi a good question but probably best discussed in a thread of its own.
+1 on @kombayotch's observation that the 240SMK is not a high performance bullet; this cartridge sure will rock when a decent 230+ grain bullet is finally manufactured by somebody!
Rick you could call it a ".300x500", where 500 means when it is time for a new barrel ;-)
+1 on Andy's comment that this would be comparable to a .30/378, no?
+1 on @kombayotch's observation that the 240SMK is not a high performance bullet; this cartridge sure will rock when a decent 230+ grain bullet is finally manufactured by somebody!
Rick you could call it a ".300x500", where 500 means when it is time for a new barrel ;-)
+1 on Andy's comment that this would be comparable to a .30/378, no?
When you consider that a 1 moa rifle will provide you with a 12 inch group at 1200 yards and my current 1200 yard target size is 24"x36" in general i am happy with any of my hits on steel.
I think my current average is about a 70% hit ratio on the steel plate.
In a perfect world i would see a cluster of shots with a max horizontal spread of 8" and a max vertical spread of 4". But for now that is a pipe dream for me.
I think my current average is about a 70% hit ratio on the steel plate.
In a perfect world i would see a cluster of shots with a max horizontal spread of 8" and a max vertical spread of 4". But for now that is a pipe dream for me.
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- Location
- calgary alberta
Case capacity is 1.2 grains more than the 30x378. (big deal huh?)
The chamber however has virtually zero freebore unlike the Wbys require to get the speed, but at the cost of accuracy.
Where I saw the advantage was access and cost of brass and given the brass life of the 338LAI hoped the same would follow. To date I have 32 reloadings from my 338LAI
I had a 30x378 out and with 210 gr bullets the best velocity I could get was 3300, out of this beast the same 210s go 3435
"+1 on @kombayotch's observation that the 240SMK is not a high performance bullet; this cartridge sure will rock when a decent 230+ grain bullet is finally manufactured by somebody!"
I agree but it is the best I could find in the weight I wanted. I am trying to talk my good friend at Accurate Bullet Company into turning out some 230 to 250 gr 30 cal bullets especially for this monster.
- Location
- calgary alberta
I will touch base with Marshal at Matrix.
Tried Retumbo, RL25 and H1000 but was not happy with either the results or how the brass developed "auto ejecting primers"
Am awaiting a shipment of Vit N570, and have some rounds loaded with 24N41 and 20N29 to try. It seems the slower the powder the better the velocity and at a lower pressure, at least so far anyway.
You're basically stuck in the 50BMG powders then... H50BMG and RL-50.
I've been wanting to try N570 and US869 in my 6mm Crusader because I'm finding the same. Best velocity with the 115 DTAC has been with Retumbo. But, both of those powders are hard to come by in these parts...
I've been wanting to try N570 and US869 in my 6mm Crusader because I'm finding the same. Best velocity with the 115 DTAC has been with Retumbo. But, both of those powders are hard to come by in these parts...
- Location
- calgary alberta
I hear you. I have been awaiting N570 for quite some time, should have a good stock this week finally
Five minutes on Google and we discover that Lapua actually made factory 300 Lapua Mag ammo and brass.
From 6BR.com http://www.6mmbr.com/thirty338.html
Even the boys in Aus have been playing with the straight walled Improved version for some time now. Here is a thread from 2010 discussing feeding issues with the straight walled case.
http://www.shooting.com.au/forum/index.php?/topic/1264-anyone-built-a-30338-lapua-ackley/
The 30-338 Lapua Improved is such a new and "original" wildcat that JGS lists a reamer on its .30 cal page.
http://jgstools.com/30caliber.html
Five minutes on Google and we discover that Lapua actually made factory 300 Lapua Mag ammo and brass.
From 6BR.com http://www.6mmbr.com/thirty338.html
Even the boys in Aus have been playing with the straight walled Improved version for some time now. Here is a thread from 2010 discussing feeding issues with the straight walled case.
http://www.shooting.com.au/forum/index.php?/topic/1264-anyone-built-a-30338-lapua-ackley/
The 30-338 Lapua Improved is such a new and "original" wildcat that JGS lists a reamer on its .30 cal page.
http://jgstools.com/30caliber.html
Yeah I guess no one in Canada should toy around with it and have success because other people did.........
yup i just realized i hit the reply button and not the make new post, my appologies to the OP on this and thanks to ultimate monkey for pointing it out
Not "toyed around with," I N V E N T E D . I went to look up the dictionary definition of the word "invented" ....... which if you are interested is:
Which definitely doesn't fit when I realized there is a second meaning to the word that I hadn't considered and which may be more appropriate here.
Although personally I think the word "confabulate" may offer the best description.
