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New Build Idea, short.243

Re: New Build Idea, short.243

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: LiteTac</div><div class="ubbcode-body">The 260 rem. /6.5 Creedmoor shine all the way down to 18". 140 class bullets with a BC of .585 and up at 2750fps.

I will have a 7-08 rem 18" up and running in the next couple of weeks. 162gr AMAX with a .625 BC. Hoping for 2750 fps.

I will let you know.

BTW, all of the above mentioned will beat a 2750 105gr 243 at .505 BC. That is 308 175gr performance. </div></div>

What powder are you going to run for the 2750FPS out of a 18" with 162AMAX? Nearest I can estimate is around 2500FPS.....will know for sure in a few weeks as well.
 
Re: New Build Idea, short.243

Cannot believe I did not see a single mention of the 6mmBR.

It will run 2850 w/105 in a 26" and likely over 2700-2750 in a 20". That would be very close IMO to a 243, quieter, longer bbl life, and more accurate. Brass lasts and lasts....lapua.
 
Re: New Build Idea, short.243

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 6.5BR</div><div class="ubbcode-body">Cannot believe I did not see a single mention of the 6mmBR.

It will run 2850 w/105 in a 26" and likely over 2700-2750 in a 20". That would be very close IMO to a 243, quieter, longer bbl life, and more accurate. Brass lasts and lasts....lapua.

</div></div>

I'd take 243Win logistics over the BR,in most applications...including this one.
 
Re: New Build Idea, short.243

I'd like to see what 7-08 does with the 162Amax out of an 18" tube.
 
Re: New Build Idea, short.243

I've quite a few of those and am hip on it as well.
 
Re: New Build Idea, short.243

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Brad Arnett</div><div class="ubbcode-body">A buddy will have his 18" 243/243AI up and running shortly. It'll be good to see where he ends up speedwise. </div></div>

Hopefully I will let you know VERY soon!!!
grin.gif
 
Re: New Build Idea, short.243

As long as you don't sell it before I get back out there.....
grin.gif
 
Re: New Build Idea, short.243

I've yet to wring out '17,but a gut hunch is that she's gonna shine in alot of applications.

Be curious to see how it behaves lot to lot and in weather.
 
Re: New Build Idea, short.243

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Brad Arnett</div><div class="ubbcode-body">As long as you don't sell it before I get back out there.....
grin.gif
</div></div>

hopefully it will be so beat up nobody will want it. i plan on keeping it in the truck.

Barrel twist will keep me from running heavies, otherwise I'd run some 105 amax's just to see what speed I would get.

I will be trying to push the 75vmax with R15 and R17 to see how fast I can get them out of the 18 inches. I am hoping 3350-3450
 
Re: New Build Idea, short.243

NOBODY will likely want it.
 
Re: New Build Idea, short.243

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: OilyOwl</div><div class="ubbcode-body">NOBODY will likely want it.</div></div>

With my rifle A.D.D. you may get a chance
 
Re: New Build Idea, short.243

I have been running R-17 works great with the 105 max, just waiting for it to get hot, that is what kills me. The speeds is easy 3250 with ol blue ball @ 23. No sign of pressure, got 3310 out JCH's .
 
Re: New Build Idea, short.243

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: OilyOwl</div><div class="ubbcode-body">2750 is a dream. </div></div>

at 18" for sure, I get 2723 with IMR 4895 out of my 22" 7-08, but even though that's over an Oehler 3 screen, 2650 matches my field dope with the most reputable cyphering better.......


Hey Felipe, you shoulda stopped by PRGC this weekend. Plenty of folks actually using their rifles you coulda met.
 
Re: New Build Idea, short.243

OilyOwl, explain '243 logistics'
 
Re: New Build Idea, short.243

243 brass abounds,whether 'stamped in such fashion or necking down from parent hulls.

I couldn't say with a straight face that 6BR brass is more readily available,from as many Makers or of like loot. The 243 smokes it in logistics and performance.
 
Re: New Build Idea, short.243

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sobrbiker883</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: OilyOwl</div><div class="ubbcode-body">2750 is a dream. </div></div>

at 18" for sure, I get 2723 with IMR 4895 out of my 22" 7-08, but even though that's over an Oehler 3 screen, 2650 matches my field dope with the most reputable cyphering better.......


Hey Felipe, you shoulda stopped by PRGC this weekend. Plenty of folks actually using their rifles you coulda met. </div></div>
Ill get down there when I get my rifle and scope, shouldn't be too long.
-Felipe
 
Re: New Build Idea, short.243

Define SMOKES when referring to a Short tube.
 
Re: New Build Idea, short.243

Distant second and then some.
 
Re: New Build Idea, short.243

the curious have to ponder past thought of a pink fucking rifle perhaps even a new name, but twisted trains of thought and willingness to internet banter lead to only one conclusion......... these pages will be more interesting in the days to come when dirty birds fly on snipers hide
 
Re: New Build Idea, short.243

Got me curious about speeds in the 243 barrel lengths. Wonder what the armchair info says on QL? I'll take a quick look into it.
 
Re: New Build Idea, short.243

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: SingleShot85</div><div class="ubbcode-body">the curious have to ponder past thought of a pink fucking rifle perhaps even a new name, but twisted trains of thought and willingness to internet banter lead to only one conclusion......... these pages will be more interesting in the days to come when dirty birds fly on snipers hide </div></div>

WTF?

I strongly belive that modern powder can be finished burning 308win case capacity in 18".
 
Re: New Build Idea, short.243

Love to know what a 20" 243 will push a 105.
 
Re: New Build Idea, short.243

I'm putting in 60,000psi and seeing what velocities I can get using a 105 JLK standard seating depth of 2.71". Only putting in non compressed loads. Oh ya, 243 win.

16" 2690
17" 2740
18" 2785
19" 2830
20" 2865
21" 2905
22" 2940
23" 2970
24" 3000
25" 3030
26" 3055
27" 3075
28" 3105
29" 3130
30" 3150
31" 3175
32" 3185
33" 3210
34" 3220
35" 3250
36" 3270
37" 3285
38" 3305
39" 3320
last load I'm gonna run

40"
Alliant Reloder-19
99.0%fill
44.1grns
3334fps
100.0% burn
60000psi
7715muzzle psi
1.599MS barrel time
!DANGEROUS LOAD-DO NOT USE!

Not exact results QL showed, but close on each. Kept waiting for the increase to drop off, seemed failry steady.
 
Re: New Build Idea, short.243

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: montana</div><div class="ubbcode-body">I'm putting in 60,000psi and seeing what velocities I can get using a 105 JLK standard seating depth of 2.71". Only putting in non compressed loads. Oh ya, 243 win.

16" 2690
17" 2740
18" 2785
19" 2830
20" 2865
21" 2905
22" 2940
23" 2970
24" 3000
25" 3030
26" 3055
27" 3075
28" 3105
29" 3130
30" 3150
31" 3175
32" 3185
33" 3210
34" 3220
35" 3250
36" 3270
37" 3285
38" 3305
39" 3320
last load I'm gonna run

40"
Alliant Reloder-19
99.0%fill
44.1grns
3334fps
100.0% burn
60000psi
7715muzzle psi
1.599MS barrel time
!DANGEROUS LOAD-DO NOT USE!

Not exact results QL showed, but close on each. Kept waiting for the increase to drop off, seemed failry steady. </div></div>

Thanks for the info. This is what ive been looking for, maybe a 18 inch .243 will be doable after all, I may just go the 20inch route to be on the safe side though.
Thanks
-Felipe
 
Re: New Build Idea, short.243

Ok, so what I am thinking is about 130 FPS more w/a 243 vs. a 6BR in a 20" bbl.

I would not say that a 243 'Smokes' a 6BR, but it is faster w/a 50% increase in powder, and 50% the bore life....

I know what I would choose.....
 
Re: New Build Idea, short.243

Looks like a realistic load using a 18" barrel you should get about 2700-2750, fairy hot load. You will have use magpro of IMR 7828 to do this. Probably a bit more if can seat the bullet out further.
Looks like it goes subsonic around 1400yards at sea level 2750fps.

This is using above rifle data
 
Re: New Build Idea, short.243

Remember, the above data is a HOT load. I would not recommend trying for those speeds. Even the 55000psi load is hot. Better do the same with 45000psi now. This is MORE OF a safe load velocity.
 
Re: New Build Idea, short.243

I should have said earlier that I have .243's in an 18", 22", and a 26". The 18 is a pencil barrel so it heats up quick and becomes quite inaccurate. The 22" is a very well balanced little gun, decent weight and shoots good. The 26" is a varmint rifle build and actually shoots the best out of the 3. It does weigh 16+lbs though
 
Re: New Build Idea, short.243

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 6.5BR</div><div class="ubbcode-body">Ok, so what I am thinking is about 130 FPS more w/a 243 vs. a 6BR in a 20" bbl.

I would not say that a 243 'Smokes' a 6BR, but it is faster w/a 50% increase in powder, and 50% the bore life....

I know what I would choose.....

</div></div>

As I stated above, this will be a budget rifle for hitting the yotes and some occasional long range shooting, I am planning on taking a sps v heavy barrel in .243 and having it chopped, then sticking it in a basic MCM or Manners stock and thats about it, im not really looking to spend 1k+ on a trued/timed barreled action. If you know where I can get a 6BR for 500$ with a heavy barrel, then I guess I could consider that caliber as well. This will not be my primary precision rig, and it will not be for comps so im not worried about it being the most accurate that it can be. My plans for it are a short, relativly light weight predator hunting stick that can still ring steel at 800ys.
-Felipe
 
Re: New Build Idea, short.243

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: montana</div><div class="ubbcode-body">Remember, the above data is a HOT load. I would not recommend trying for those speeds. Even the 55000psi load is hot. Better do the same with 45000psi now. This is MORE OF a safe load velocity. </div></div>
Would like to see where its at w/ 45k psi, and 50kpsi, please post up the info if you have the time.
Thanks
-Felipe
 
Re: New Build Idea, short.243

same data, but 45000psi, only going to 26" to be realistic.

16" 2480
17" 2535
18" 2585
19" 2630
20" 2675
21" 2715
22" 2750
23" 2785
24" 2820
25" 2850
26" 2880

Looks like RL-25 gets the most in this case.
 
Re: New Build Idea, short.243

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: montana</div><div class="ubbcode-body">same data, but 45000psi, only going to 26" to be realistic.

16" 2480
17" 2535
18" 2585
19" 2630
20" 2675
21" 2715
22" 2750
23" 2785
24" 2820
25" 2850
26" 2880

Looks like RL-25 gets the most in this case. </div></div>
I guess I could push it up to about 2700 in the 20inch tube, that should be ok.
We will see..... Thanks for the info
-Felipe
 
Re: New Build Idea, short.243

Budget, got ya, a Handi Rifle will get you a 22 or so length bbl, maybe 24, not sure, overall wt. and length like you want. One shooter though.

Nothing wrong w/a chopped 243. Enjoyed my 600 Mohawk w/18.5 on yotes and crows but would go 6BR if had my choice. Blast, bbl life and accuracy are the reasons. Brass stretch a non issue for the most part as well. Something to consider if you re-bbl down the road.

Good luck w/your project, never had a poor shooting rifle in a '6'
 
Re: New Build Idea, short.243

Yeah budget will be the name for this rifle, have to much into my custom -06 which should be ready shortly. want something a little lighter for hunting.
Thanks for your input,
Regards
-Felipe
 
Re: New Build Idea, short.243

I'll have chrony info this weekend once I can get to the range

Here is the 243 win cut down to 18"
100_0530.jpg

100_0531.jpg
 
Re: New Build Idea, short.243

Nice rifle, ill be waiting for the velocity info.
 
Re: New Build Idea, short.243

I have no idea on what the velocity is outta my 16 1/2" .243...but I shoot 75gr hollow points and at 200 yards it goes through broad side yotes and leaves a nasty exit hole. Inside of 200 yards it is pure carnage.

Bottom pic is of a 120 yard straight on chest shot...bullet traveled the length of the yote coming out just below the rib cage and exiting out by its ass....as you can see...not pretty.

I have shot this rifle to 300 yards with the same 75 gr hp ammo and get avg. 2" to 2 1/2" five shot groups.

My buddy liked my setup so much he made a clone of it using a blued model and shoots 95gr SST I believe out of his. Not quite as much pelt damage as the 75 grainers.

Take care,Stan










 
Re: New Build Idea, short.243

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: patches</div><div class="ubbcode-body">JCH-
18" from the recoil lug or 17" from the lug?
</div></div>

18 from the lug
 
Re: New Build Idea, short.243

shot mine today. It is 22 inch 8 twist shilen cm match.

I got 3000+ fps with

107 smk
win brass
wolf primer
41 gr RL17
2.830 coal

The RL25 load was around 2900
 
Re: New Build Idea, short.243


ill let you know what a 243 ai does at 20 very soon. waiting on mcmillian
 
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