The Accurate Reloading Forums
Whats the bigest boomer I can put in win 70 ultra action.
13 August 2006, 22:18
PRDATORWhats the bigest boomer I can put in win 70 ultra action.
Ok, I been shooting LB404's 500 jeffery and have just loved it ( wow what a gun) anyho I have a winchester model 70 in 300 ultra that I would like to make in to a boomer. I have a 375 h&h ( that I would lkie to make a 375 wby but need a reamer) a 375 ultra and a 416 rem.
The 458 Lott looks like the best one but what else is out there?
Thanks
You can't kill them setting on the couch.
13 August 2006, 23:44
jeffeossoEasily? the 460 GA, with ALOT of work, a 585 nyati... I think 500grains has one.
conviently? the 470 AR/Capstick
14 August 2006, 01:07
boom stickthere is also the ultracats by z-hat 458, and 416...just a barrel swap.
www.z-hat.com since you already shoot the 416 i would recomend that. you already are using ultra brass and have 416 bullets. should be the simplest/cheapest wildcat. if you do the 470 a.r. like i am doing you could stick the bullets out further in that action and get even more power or lower preasure than the reg a.r. and a significant increase over the capstick. i like the idea of the 470 for being a biiiiig bullet and use 400gr pistol bullets for plinking/hogs.
14 August 2006, 01:31
PRDATOROk so what is the 470 ar based off and can you get the brass with the proper head stamp.
What kind of velocity do you get out of it?
thanks guys
You can't kill them setting on the couch.
14 August 2006, 02:25
jeffeossoThe AR is based off a shortned RUM case, fireformed and poof!, bob's your uncle.
500gr woodleighs, 26" barrel, can hit 2400 though I run them at 2300 for less pressure.. 400gr speer golddots at 2450-2500
have a look ..
http://www.weaponsmith.com/AR-rounds1.html
14 August 2006, 02:59
duikermanyou can also just rebarrel to 404 Jeffery and loaded to 65,000 PSI it'll blow the leaves off most of the trees as well.
14 August 2006, 03:07
boom stickduikerman...
will the jeffe brass hold that preasure???
better be a tight chamber...
i think a couple people here did that conversion but i cant remember who...
i like that conversion idea too but i lean twards the 470

14 August 2006, 04:28
500grainsWith a hellish amount of work you can turn a model 70 into a 585 nyati. Or a 495 A-Square. The biggest factory cartridge you can fit into it without radical alteration is the 470 capstick. for wildcats, the AR rounds offer an easy conversion with an advantage in powder capacity, although for any of the AR rounds I would use a 1-10 twist rather than 1-18 or 1-14 to achieve better bullet stability in flesh.
14 August 2006, 04:43
fredj338The .404j is pretty straight forward, I have one on a RUM. Makes a nice rifle even though some fo the purists disaprove.

LIFE IS NOT A SPECTATOR'S SPORT!
14 August 2006, 04:59
boom stickquote:
Originally posted by 500grains:
With a hellish amount of work you can turn a model 70 into a 585 nyati. Or a 495 A-Square. The biggest factory cartridge you can fit into it without radical alteration is the 470 capstick. for wildcats, the AR rounds offer an easy conversion with an advantage in powder capacity, although for any of the AR rounds I would use a 1-10 twist rather than 1-18 or 1-14 to achieve better bullet stability in flesh.
wow grains...sounds like an endorsement for the a.r.rounds

14 August 2006, 05:29
jeffeossoDan,
I can agree with that... if a fella likes a faster twist he should get it.. i did that with the 358 win..
jeffe
14 August 2006, 07:54
Bwana-beIf you already have a 3.6" round action, and you want the biggest boomer, you should easily get a 470-404 Imp in there, which will beat the 470 AR, albeit by only a bit.
Not much difference in the two, except that the AR loses almost a third-inch of your available space. Great for Ruger 7mm Rem's, but not "the biggest boomer you can put" in your gun.
Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.
14 August 2006, 08:28
lb404If I am not mistaken, an 500 Jeffery can be made up on that Winchester action. PRDATOR, did you shoot today? I made it up there about 0915 and shot till 1300. I shot the 485 Lott and the 500 Jeffery off the bags. Not as bad as I had originally thought it would be. Twenty rounds of the big boys will get your attention.
square shooter
14 August 2006, 18:27
PRDATORNo I did not shoot at all this last weekend satI felt like crap and sun was not much better
I had to spend all my time working on my resume.
Man I hate that I missed shooting the big boys.
You can't kill them setting on the couch.