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Join the contestYou might consider this one.Currently building a coyote hunting rifle and between the two calibers. Just wondering if there is someone who has been in the same boat. It is an 18" proof bbl. Any advice is appreciated. Thank you.
Do you reload or are you planning to shoot factory ammo? What’s your barrel twist (assuming you purchased already)?
If hand loading, I’d go 22 Creedmoor for the added horsepower over the standard 22-250. Plenty of 6 Creed brass out there to neck down, or if you can find it, there’s Hornady, Peterson, and Alpha 22 Creed. The 22 Creedmoor will feed much better from a mag set up compared to the tapered case of the 22-250.
You can find loaded ammo for the 22 Creed, but it’s a little pricey and not widely available right now. You may have better luck tracking down 22-250 ammo if you’re only planning on shooting factory ammo
I am starting from scratch.Depends if you want to shoot heavies or not and if you are going to shoot factories ir load your own. Starting from scratch with no brass dies etc. I’d say 22Creed would get the nod.
performance is going to be pretty close. I switched to the 22 Creed as its got a few benefits but if i had lots of 22-250 stuff I’d keep shooting it. Modern bullets and math has pushed me towards the heavies and i have foundthe 22 Creed to be a bit better for what I’m using it for. Both are great rounds one just works better for me.
I do hand load so not a huge deal about finding ammo. The twist is a 1;8 twist 18"longDo you reload or are you planning to shoot factory ammo? What’s your barrel twist (assuming you purchased already)?
If hand loading, I’d go 22 Creedmoor for the added horsepower over the standard 22-250. Plenty of 6 Creed brass out there to neck down, or if you can find it, there’s Hornady, Peterson, and Alpha 22 Creed. The 22 Creedmoor will feed much better from a mag set up compared to the tapered case of the 22-250.
You can find loaded ammo for the 22 Creed, but it’s a little pricey and not widely available right now. You may have better luck tracking down 22-250 ammo if you’re only planning on shooting factory ammo.
Thank you this is all very helpfullI have an old factory Browning A bolt in a 14 twist that shoots well for a factory gun.
I wanted to shoot 90s and 95s so I put a Bighorn/proof together, 8 twist.
With the 90s I only gained 50 FPS so far over 22-250 loading.
I loaded new Lapua 22-250 cases for fire forming and was at 3170 range and very small groups.
After that my 22 creedmoor was making 3223 FPS with the 90s. I had some moving 3500 but hit pressure and no accuracy, I may need to try some different powders to get the speed I’ve seen others post.
My 8 twist wouldn’t shoot 95s so I have a 7 twist Rockcreek being spun up for the 95s, I’m still waiting on that one.
I’m sure I could play around and find something faster, but I liked the small hole it shoots for groups at 3223.
It shot very well out to 900 yds the last time I had it out.
I’m hoping for 3150 FPS with the 95s in the new barrel.
Someone mentioned feeding issues with the 250, but I noticed the opposite, my fire forming rounds feed flawlessly, and some of my creedmoor rounds don’t feed as well unless the bolt is worked fast.
I only went creedmoor because of the prefit barrels available.
That said it’s not much faster than a 22-250, but I do like it.
I’m using IMR 4451 for powder in it.
Am I wrong in thinking a big advantage of the 22 Creed would be the sharper should of the case keeping the brass from growing as much as the milder shouldered 22/250? Trimming brass is a pita and it’s always seemed to me sharper shouldered cartridges get more firings before I have to trim them. I don’t know if this is unique to my experiences or an inherent trait to cartridge case design.
I’m not sure if it does. It was just my experience with what I have loaded for in my time shooting; likely a result of an overly large chamber or slightly looser headspace like you said.How does shoulder angle reduce neck length growth?
If you're concerned with length growth from shoulder datum to base, that should be fixed with headspace, no?
I think most neck growth comes from brass flowing from expansion during firing and dragging an expander ball out through it. I don't have numbers to put to it, but I'd say 90% of the growth comes from bass flow during firing.I’m not sure if it does. It was just my experience with what I have loaded for in my time shooting; likely a result of an overly large chamber or slightly looser headspace like you said.
I think most neck growth comes from brass flowing from expansion during firing and dragging an expander ball out through it. I don't have numbers to put to it, but I'd say 90% of the growth comes from bass flow during firing.
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This is correct. The two items listed above are the ways cases get longer. The expander ball might be the worst offender. Actual percentages vary depending on amount neck is pushed down, size and surface finish of the expander ball, lubrication, pressures and powders for the loadings. Every case is individual. Sharper shoulder angle does tend to reduce case length growth. The 22 Hornet, 300 H&H were notorious for requiring trimming. The AI and modern 30 degree shoulders not so much. Cases with a lot of body taper like the 22-250, 22 Hornet and 300 H&H get some of the growth from body taper as well as low shoulder angle.
I think most neck growth comes from brass flowing from expansion during firing and dragging an expander ball out through it. I don't have numbers to put to it, but I'd say 90% of the growth comes from bass flow during firing.
Body taper is still an issue. Due to the body taper the shoulder has a smaller diameter thus less area to hold the brass against the flowing brass.
So I’m not crazy in my experience with having to trim 22/250 and other similar shallow shouldered cartridges needing trimmed extremely often. . . .I will also add the following.
I have been a 22-250 user since I first shot one in the middle '60's. Prior to Remington calling it the 22-250. It was the 22 Varminter back then. My first one was built on a twice shot out pre war Win mod 70 .220 Swift. The sn is 629.
I have shot one for over 50 years. In the past year I have gradually moved out of the 22-250 caliber. Sold cases of Lapua brass, cases of factory ammo, several rifles in 22-250 etc. I have 1000 new 22 CM cases and will be rechambering my last two 22-250's to 22 CM as soon as I can get them shipped to LRI. It's simply a better set up for the reasons listed above. Better DBM feeding, better performance with heavy bullets, less need for trimming. YMMV
I may be wrong, but I believe the case taper has a bit to do with it as well. It is much harder for the cases to grip the chamber walls with that much taper.So I’m not crazy in my experience with having to trim 22/250 and other similar shallow shouldered cartridges needing trimmed extremely often. . . .
Just get a Giraud and keep the 250.So I’m not crazy in my experience with having to trim 22/250 and other similar shallow shouldered cartridges needing trimmed extremely often. . . .
Like my 22/250 I also had a lot of case growth with .243 as well and found I needed to trim it a bunch more than my 6.5 creed or 6.5x47.I may be wrong, but I believe the case taper has a bit to do with it as well. It is much harder for the cases to grip the chamber walls with that much taper.
The 6.5SE is similarly afflicted.
You can take the 22-250 mag fed issues and toss them (at least for me) I don't know if guys are fuckin with the feed lips and don't need to be or what. I built a mag fed 250 about 8 or 9 years ago and never once had to mess with the feed lips or have feeding issues for that matter. Currently I have 7 custom 22-250's all with DBM, no issues not one.I wanted a 22-250 and read up about it. The 75 Amax was my bullet of choice then and I burned up 6000 of them in 223 with great satisfaction. Reading reports of mag fed issues do to the case taper swayed me away. 243 and 105 Hybrids was what I settled on and enjoyed that as a step way up for comps.
flash forward, 22-250 is still of serious interest. I do not need 3600fps. I could just as well shoot 22-243.
Yeah I've never had any issues with feeding in a 22-250 so I'm not sure why that'd even be a concern. I don't have a 22-250 that feeds through a det. mag setup but my 20-250 runs a HS Prec. det mag setup and it feeds like butter.You can take the 22-250 mag fed issues and toss them (at least for me) I don't know if guys are fuckin with the feed lips and don't need to be or what. I built a mag fed 250 about 8 or 9 years ago and never once had to mess with the feed lips or have feeding issues for that matter. Currently I have 7 custom 22-250's all with DBM, no issues not one.
I also currently built a 22 Creed with the DBM, and it's awesome also, especially if you are going to be exceeding 400 yards quite often.
This is something for me to think about. What twist is your bbl?I am running an 18" bartlein 22 creed. My opinion is forget anything over 60 grains. Sure, they all work, but speed and performance on coyotes, it's hard to beat a 60 vmax or even a Sierra TMK. Using H4985, I'm getting 3700fps flat. With a 100yd zero, I'm barely over 1 Mil drop at 400yds. Forget H4350 in a short barrel, you won't get full burn.