New round

[JoshT]

If you'd be happy with those #'s... then make it a 6mm Rem.

[catwithboost]

I have not checked on that round. But my only concern would be the power at like 700 yrds or so. would the 6mm have the energy left to drop a Antelope or deer at 700yrds. I am not a big bullet guy as I do not believe I need a 338 to take down a deer at those distance just good shooting.

[G.R.K]

240 WBY 

[JoshT]

Dude... 100-200 fps isn't going to mean dick-all at 700 yards. There's a whole lot of shooting that needs to happen between now and then... and .243 vs. 6/06 ain't going to be the deciding factor on a pronghorn. Besides... even a big 'lope is about 110lbs... and they ain't very hard to shoot through.

I've seen a lot of big game critters get pole-axed with .243 cal bullets... from 50 feet to the far side of 500 yards... put a 90-100 grain bullet in the boiler room... and it doesn't matter much what round it came from. I shot two muley does with 55 grainers out of the 6mm... both went down like they were struck by the hammer of Thor.

Just for giggles, I ran the numbers... a 90 grain NBT (my favorite "all purpose" bullet in 6mm)... started at 3400 it has 650 ft/lbs at 700 yards... at 3700 it has 775 ft/lbs... that 125 ft/lbs means nothing. If the bullet is through the lungs... dead lope... if it ain't... long tracking job... and that goes for rounds a whole lot bigger than 6's too!

If you substitute the 95 Berger VLD... at 3300 you'd have about 1000ft/lbs... at 3600 you'd have about 1175. And, the difference in wind is about 3" at 700 yards... you see what I'm getting at here? All of this is just ballistic gack... and you'd save yourself a whole lot of time and dough... by sticking with the .243 and just shooting it.

[jackelope]

hundreds of dollars spent for pennies worth of results achieved.

 

Josh's take on things makes good sense to me.

[G.R.K]

Velocity is all that matters. 

[Bofire]

 :)Now you guys, Catwithboost is on a mission to build a great gun. I did that too. Most wildcats are an exercise in futility but so what? its fun!! Dont down his trip.
Once a 6mm bullet is in the air the case it came from dont matter.   I say go for it Cat!! have fun
Carl

[JoshT]

Yeah... we all ignore good advice... build the gun... or three. I've been there... done that... and know what happens. The numbers don't lie... but eveyone thinks their rifle will be an exception to the rule... it ain't. Have fun... then come back to reality.

[catwithboost]

:)Now you guys, Catwithboost is on a mission to build a great gun. I did that too. Most wildcats are an exercise in futility but so what? its fun!! Dont down his trip.
Once a 6mm bullet is in the air the case it came from dont matter.   I say go for it Cat!! have fun
Carl

Thank you Carl. Yes it is my money and really aint costing me dick to build it. I have the stock, Barrel and barrel work is free So I will have to buy a action and a trigger. So figure $400.00 for a new rifle. So you guys talking down on what I am doing can you buy a new rifle and put a aftermarket $200 trigger on it and be into it ALL for $400.00? NO! So that is why I am doing it.

[Red Dawg]

I would build the rifle in a second. Something a little bit different than the rest and who cares if it gives you an advantage or not. I havent met a gun I didnt enjoy now matter how fast or slow it shoots. Make sure to keep us posted on how it shoots cat. good luck

[catwithboost]

I would build the rifle in a second. Something a little bit different than the rest and who cares if it gives you an advantage or not. I havent met a gun I didnt enjoy now matter how fast or slow it shoots. Make sure to keep us posted on how it shoots cat. good luck

Will do. And let the flaming start on this one. I am going to work my 7mm mag over after this season to a 7mm/378 weatherby mag. Why you say? Because I want to.

[bow-n-head]

Josh I don't know where u r getting your reloading data, but my .243 doesn't even come close to 3400fps with a 90 gr. bullet. 3100 on the hot side. yes I have chronied the loads

[JoshT]

Where do I get my numbers? From about 20 years worth of work with various 6mm caliber cartridges... like I said at the begining of this post... I've built two 6/284s... I drank the kool-aid... twice! Add that to a couple .243s, 6mm Rems, a 6/250,and a buddy's 6/06... and I have a fair idea of what 6mm combos are capable of. I've also built a bunch of other wildcats... and have always come up short of what the gurus were saying was possible. My current 6mm will run 90s at 3300 pretty easily (in a 24" factory pipe)....

It's pretty common to get extra velocity out of a wildcat, because everyone shoots them so hot... if you do the same thing to a standard cartridge you're "asking for trouble"... why is that? Just because a case is "ackleyed" or necked up/down doesn't mean that all of a sudden 75,000 psi is acceptable... it just means that there's no established standard... so use whatever's clever. Run them both at equal pressure... and the results will be a lot closer than factory loads vs. your hot loads that you got off some internet site. 'boost posted numbers running a 6/06 with 100's in the 3500 area... that's pushing it real hard... might as well work numbers pushing the other round equally as hard. And, the numbers were more for comparison sake... use the 300fps difference (use 3100 and 3400... the difference is still about 100-150 ft/lbs)... and you can see that it doesn't amount to a hill of beans when it comes to schitt that's covered with fur.

[bow-n-head]

Josh, what powder would you recomend in a .243 win. with a 95 gr. berger bullet. It looks like you have a lot of experience in 6mm. I don't like hot loads at all.

[catwithboost]

Well three of my 243 savages have like H380 42gr for the 95gr bullets.