More 22-250 fodder

[Intheshop]

Told wifey I was going to put down hdwd flooring in the,previously known as junk room,upstairs (like 8 BR's aren't enough).

Which,did happen.

But,there's also forced induction -slash- vented to atmosphere,Lyman 10# pot in the corner.So,ran about 6 or so pounds through that new Lee mould.It is almost broke in now.

Reject rate dropped dramatically,happy to say!!Got the "fitted" top punch made last week so,give the bullets a cpl days to rest and it's back to testing.

Got a pound of 2400 at the gun show on Saturday,along some more 4895(30-06 fuel).So,using the previous groups/vel utilizing 4198 will be the std to which testing with 2400 takes off.

Will run a few 4198 loads,ruthlessly picking bullets this time,to confirm zero and see how much effect rejects vs quality bullets have.Well that and the new top punch......then,get it on with 2400.

Trying to get 2400 fps with 2400.Have a great day,my back hurts,haha.

 

[fiver]

2400 with the 2400 would be too much.
with 4895 it would be pretty easy
imr type will get you there with about 22 grains.

 

[Intheshop]

I "think" because of CRS,4895 was on the menu when first working up the""250".The targets are laying around,but they are all 4198 data.

Now,why is 2400 fps asking too much from 2400 powder?Isn't that the history behind this powder....back in the 1920's,30's.Wasn't it "developed" for the Hornet?

 

[9.3X62AL]

I will be looking on as this proceeds, since I am planning on some cast bullet work with my re-barreled 22-250 (Rem 788). Somewhere in my amalgam of debris in the garage I have a reprint of a Mike Venturino article on this subject. I figured to dig it out when work commenced here, but I can unearth it sooner if some assistance is needed.

 

[Intheshop]

BTW,the new top punch was turned on a Z series Grizz "toolroom" 13/40 lathe.It's stupid accurate,even has the bed engineered with a patented process (that Grizz certainly didn't invent...doh).Just sayin...the meehinite (sp) process is sumthin that,if you've never Tigged cast iron,you just aren't up to speed.

As such...or therefore...or whatever,I trust it more than any,slam bam,cnc production based 30$ mould from Lee.The "net" effect is that,when I introduce a bullet into this top punch,it shows the slight,out of roundness on the dropped bullet.It ain't much...but it does show on the bore riding section.And corrects it.

The D reamer was so dang accurate that words sorts don't do justice.It got a little"sticky" late in the finishing stages,but I'm above 95% satisfied in it's acc.

 

[Intheshop]

Our other lathe is a Wade 8A,it's even nicer,and a touch more accurate than the Grizz.Their advancements in accuracy are more than legendary....they set the bar so high that pretty much everyone else went "no-mas".But we only use it as second op collet...so...

It sat there,watching patiently.....

 

[fiver]

you can get there with 2400 but with a 55gr+ boolit your gonna start running the pressure up into jacketed territory.
but at a fast pressure spike instead of a gentle push.

IMO the speed is doable but I don't think you'll have the accuracy.
you might if you have a good handle on the centerline to centerline relationship and a bit of run up to the throat it just never worked out for me that way.

 

[Intheshop]

Gotcha,pressure curve of 2400 ain't gonna be in it's sweet spot,given the boolit weight....getting worse,the further up the vel ladder.Not impossible,but accuracy is going S. all the time.Thanks.

 

[Intheshop]

OK,ice the 2400...got a DW 744,and a 629 that'll make VG use of it behind a real nice 429421.

I found the 4895 targets.They were cut into small squares and clothespinned,at eye level over the loading bench...doh.Which means,I need to come up with a better system for organizing test targets.

The only load was 20 g.But,7 shot groups are nice N round,3/4" @ 50.No vel numbers.So the only reason to go with 4198 was based on past experience,albeit JB's,in a first year 722,.222...T10 scope.Dumb luck?got it to perform well with CB's in the 22-250.With 2600 fps and 1/2-3/4 groups @50.

The 4198 is well documented,but the boolits were horrible.So,testing will resume with much better boolits.May not chrono the 4895 today,but am gonna sling some down range.Will go over the 4198 loads and pick a cpl to use as the benchmark.

 

[Intheshop]

A pot of coffee and 5mph breeze didn't help but....

10 shot groups at 100 were hovering around an inch with 21g IMR4895.Wind was a factor along with shooting off a big honkin BR "true 3rd leg",capstan,bronze bearing machine.Protektor Fr bag is for a larger forend,too lazy to change it.

The groups were round with the wind drifting them,always to the same side out of otherwise ragged hole.But valuable info from a hunting perspective.

Bad news is,my wallet needs lightening....these cheap,blankety blank Lee dies are really bad.Its the std full length,not the collet.I cheated past some inherent "issues",but it ain't fun.Maybe Santa will bring me some a little better?

The fitted top punch needed a cpl .001's trimmed off length and is a real pleasure to use.Run out,stupid dies....was held the best I could at .0015-.002.

The moulds bore riding Fr part fits this guns throat as good as anything I've got with possible exception of the new CDL....

 

[fiver]

nice.
the neck sizer LEE uses is good for controlling neck tension.
the round groups indicates you are in good shape.

 

[Intheshop]

Better lucky than good right?

Cruising fleabay start drooling over,foaming at the mouth really.....at 22-250 dies.Running programs in the grey matter on how many days lunch monies would it take for these?Then going to the next listing....how many yards would a younster have to mow for these?Next listing...dang,these are way out of any allowance money,screeeeech.But,they're 10 minutes up the rd.Got a message in to see if we can meet at the Walmart.....can't be too careful,guys selling reloading chit on eBay and all.Who knows,might even make a new friend.....naw,that "never" happens.

 

[Intheshop]

Deal fell through...all on me.

Being computer challenged has it's faults.But,made a friend nevertheless,nice guy.

Further,got some new 22-250 dies headed this way.Gotta love Ebay...doh.

 

[SierraHunter]

BTW,the new top punch was turned on a Z series Grizz "toolroom" 13/40 lathe.It's stupid accurate,even has the bed engineered with a patented process (that Grizz certainly didn't invent...doh).Just sayin...the meehinite (sp) process is sumthin that,if you've never Tigged cast iron,you just aren't up to speed.

As such...or therefore...or whatever,I trust it more than any,slam bam,cnc production based 30$ mould from Lee.The "net" effect is that,when I introduce a bullet into this top punch,it shows the slight,out of roundness on the dropped bullet.It ain't much...but it does show on the bore riding section.And corrects it.

The D reamer was so dang accurate that words sorts don't do justice.It got a little"sticky" late in the finishing stages,but I'm above 95% satisfied in it's acc.

What I wouldn't give for a good lathe. The one I currently have access to is so work out that all the controls have at minimum 1/2 turn of free travel, and only the cross feed has any kind of markings to tell how much you have cut.

 

[Intheshop]

Sierra,

Vertical vs Horizontal integration is a well groomed business concept.Another way to look at it is the chicken or the egg?

Waxing on...."you make your own luck".Getting priorities straight.

The last lathe I got was a Clausing 14x40.It,and interestingly the Wade had been subjected to what call forklift tag.The Wade got it's base speared,and bashed pretty bad.Treated it like auto resto,cutting out the damage and carefully Tiggin in formed replacement sections.Got it for beer money.

The Clausing,fell off the forks(at a machinery dealer no less),doing a faceplant.Busting several key pcs.We machined replacements and some critical cast iron Tig work.It's maybe an 1800$ lathe,considering wear.Gave 400 for it.A blacksmith bud has it over at his shop.Doesn't use it a lot....but it's working for him.

Our machine shop supports our cabinet/wood biz....horizontal integration.