i mentioned about the 284 basic brass that is being made and have been banging my head (essential wildcatting procedure) on possible new wildcats. i finally figured it out. swage a belt on the 284 basic brass so there will be no headspace issues or taper issues.

the case can vary from 06 length or 2.54" (the most logical) or 66mm.
it will be a straight taper, no shoulder to either 411, 416 or 423 (it can go up to .435" the bullets for the 425 w.r. but i dont see the need) though a shoulder on the 411 would make some sense and you could use the 411 hawk reamer and dies to save money.

being that there are no issues with headspace (perceived to be real or not) will give the hunter some confidence in his tools but we all know it is how the gun is put together and well tuned by the gunsmith.

that said... this is how i envision it to be and any help or input would be well received.

the goal is to get the 40's doing 400 @ 2150 on a rebarreled 06 size action and bolt with minimal modification suitable for d.g.

this is how i see the 435 version
2.54" brass length
.470" rim
.500" belt
.480" casehead in front of the belt
.020" taper
.025" neck thickess, 12.5 thou per side
.435" bullet

the 423 version

2.54" brass length
.470" rim
.500" belt
.480" casehead in front of the belt
.030" taper
.027" neck thickness, 13.5 thou per side
.423" bullet

the 416 and 400 versions i have not completely decided on as far as if it should have a shoulder for max capacity but figure 15 or 20 thou taper and a cal length neck.

headstamped brass could be avaliable for about $150 a pop but the actual price is still being figured out.

an unbelted version will have more room and can be necked to 435 on down but i seem to like this one more. the unbelted ones would have about the same capacity as the win mag brethren. the 400 version interests me the most of those.



what do you guys think???

the pic below is a necked up 240 wby x 57mm, the 400/375 ad the 423 okh that headspaces off the case mouth.

the cart i described made on the 284 basic would basicly be a 423 okh but have a belt and no headspce issues. it would have more capacity to make the goal of 400@ 2150 in a std action and 06 boltface

I really do not see why you want a swaged belt on this one, when all you do is steal case-capasity. Better use a 10,75x68 reamer and dieset, and use the rebate as it is.
Better a shoulder than a belt, IMO, ecpesially a belt with a rebateed rim.

It will require more work than the .425 Fossdal, but will also give 2150 at lower preassures, besides lower mag.capasity.

Personally, I do not see the benefits over the original 10,75x68, since opening the boltface is a small issue.

hey bent...

the easy way is to neck up the 400/375...just a simple neck up or order some sans neck and then stuff.

the proposed case would have a bit more capacity than the 06 case that is all you need to get the magic 2150 and maybe 2200. the unbelted version is an option as well and i would neck it to the 400 to get the max shoulder and taper.

the 404 straight belted is a scaled version of the 458 win mag since it does not minimize the taper. and would be functional without the infernal shoulder issue real or not.

this is what ramrod340 is getting on his 416 pdk based on the 280 case (06)

Is is what I got from the 416 version when I had it. Loads are IMR4895
Bullet Charge Velocity
350Speer
68 2400
67 2385 Most Accurate
66 2365
65 2350

300 Hawk
70 2570 Accurate
69 2555
68 2525

400Hawk
67 2205
66 2190
65 2160 Accurate

My buddy is using only 340s and the load data he gave me is:
340 Woodleigh IMR 4064
68.5 2435
68 2430 MOA
67 2410
66 2395
65 2375
64 2360
63 2340

quote:

284 basic brass

boom stick where can you get this?

quality cartridge
it will be manufactured soon to 2.6"!!!
exact date i am not sure...give them a call and let me know. he said it was comming.

what are you thinking of making?

280 Rem AI 40 degree dimensions at the mouth, neck and shoulder with the shoulder continuing to a fairly low tapered sidewall up from the 284 head dimension.

hmmm...interesting.

how about just increasing the shoulder dia and casehead of the 280 ai by 30 thou?

Yes, that would be it, but the 40 degree shoulder would be preserved all the way to that .477" or so where the case body/sidewall would begin, and the case head would be .500" not .503".