Posts: 285
Threads: 10
Joined: Feb 2018
09-23-2019, 03:39 PM
(This post was last modified: 09-23-2019, 07:22 PM by ported45.)
I just acquired a Ruger American 22-250 over the weekend and the thought hit me that the Grendel cartridge might fit the 250's magazine fairly well. I didn't fill the mag, but a single 120 Gold Dot in the 250 mag fed right up into the bigger 22-250 chamber with ease. I ran the bolt just far enough to see that it picked up the cartridge and lined up perfectly, but not far enough to actually fully chamber the Grendel round.
I am supposed to get my Predator Grendel this Tuesday evening and the first thing I might do after a thorough cleaning is put the Grendel action in the American stock and try feeding from a 22-250 magazine full of Grendels.
I would really rather have a flush-fit magazine for hunting anyway even if it limits capacity to 4.
Posts: 6,193
Threads: 170
Joined: Mar 2015
I can't say I have seen anyone try it. Keep us posted on how it goes.
What kind of coal length does that 22-250 mag allow?
Posts: 285
Threads: 10
Joined: Feb 2018
09-23-2019, 05:10 PM
(This post was last modified: 09-23-2019, 05:12 PM by ported45.)
A5BLASTER Wrote:I can't say I have seen anyone try it. Keep us posted on how it goes.
What kind of coal length does that 22-250 mag allow?
It is a full, short action length mag, so you could load all the way to ogive contact more than likely.
Loaded 22-250 has LOTS of room from 53 Varmaggedon tip to the end of the mag and I am loading it to start 0.006" from contacting the lands in the 250 barrel.
Posts: 435
Threads: 16
Joined: Feb 2019
Is the Ruger American 22-250 flush fit mag an AR platform? It may not fit the action lower of the 6.5 Grendel RAP. (Unless you change out the bottom metal or actually plastic in this case), between the two rifles. The case diameters are close enough between the two cartridges to warrant an experiment. Please do give us an update when you get your Grr RAP.
Posts: 6,193
Threads: 170
Joined: Mar 2015
ported45 Wrote:It is a full, short action length mag, so you could load all the way to ogive contact more than likely.
Loaded 22-250 has LOTS of room from 53 Varmaggedon tip to the end of the mag and I am loading it to start 0.006" from contacting the lands in the 250 barrel.
Yes but that doest answer the question at hand. What coal length does the 22-250 mag allow?
It's not 2.850 so what is the typical factory ammo length for 22-250?
Posts: 285
Threads: 10
Joined: Feb 2018
22-250 magazine for the American will allow a 2.865" cartridge.
Typical coal for a 22-250 cartridge is 2.350" .
Did not get to take possession of the rifle; I declined accepting it. Had the finish scraped off of the barrel just forward of the action on the left side for about 2.5 - 3" all the way down to the metal.
Probably be about two weeks to order in another.
Posts: 6,193
Threads: 170
Joined: Mar 2015
ported45 Wrote:22-250 magazine for the American will allow a 2.865" cartridge.
Typical coal for a 22-250 cartridge is 2.350" .
Did not get to take possession of the rifle; I declined accepting it. Had the finish scraped off of the barrel just forward of the action on the left side for about 2.5 - 3" all the way down to the metal.
Probably be about two weeks to order in another.
Ok thanks that's what I needed to know.
So I'm thinking they put a limiter block in the mag so the ammo stays under the feed lips like it should.
Posts: 285
Threads: 10
Joined: Feb 2018
No. Nothing in the 22-250 magazine but the follower "blade". I can still put a Creedmoor or 308 in it, just tried it.
Posts: 285
Threads: 10
Joined: Feb 2018
A5BLASTER Wrote:Ok thanks that's what I needed to know.
So I'm thinking they put a limiter block in the mag so the ammo stays under the feed lips like it should.
Negative. Nothing additional in the 22-250 mag. Completely interchangeable with Creedmoor or 308 Win, just tried it.
Posts: 285
Threads: 10
Joined: Feb 2018
After refusing to accept the first RAP Grendel due to severe factory damage (box had no damage, so wasn't during shipping) to the barrel finish which removed a 2.5" length of the matte finish all the way down to bare metal, I finally took possession to a RAP Grendel yesterday afternoon.
I hope to swap out the stocks from the 22-250 American and the RAP Grendel just to see if it will feed from the flush fit rotary mag.
On a side note, the action was a bit rough to begin with and you had to be real snappy with it to feed from the C Products magazine, but after cycling through a few magazines full it feeds much smoother. It never once had any failures to feed when being heavy handed; just could not cycle slow and smooth as it would not push them out of the mag at all that way. Now it seems to feed when cycling slow and fairly smoothly.
Still going to try the stock switch just because I don't really care for the mag sticking out and would rather hunt with a flush fit.
Posts: 285
Threads: 10
Joined: Feb 2018
Ok, it works...poorly as is with a full mag.
If I were satisfied with one in the pipe and one in the mag (which would be good enough for hunting in 99% of circumstances) it works without flaw every time.
It will need a heat gun to narrow the front part of the feed lips to keep the rounds from prematurely popping out of the 22-250 mag. Or try a .223 mag and see what would need to be modified.
I will use it in its original configuration this season, but I will be putting it back into an American stock next year and playing with it to make it work with the American flush magazines in either 22-250 or .223.
But I am confident in what I saw that it can be made to work with some tweaking of the American mags.
Posts: 104
Threads: 2
Joined: Jul 2019
Dont waste your time with the RAR .223 rotary magazine. It was designed to only be usable with .223 and nothing else as far as I can figure out. I cant even put .350 Legend ammunition in it. Im stuck using AR magazines with my .350.
Posts: 285
Threads: 10
Joined: Feb 2018
Mitdr774 Wrote:Dont waste your time with the RAR .223 rotary magazine. It was designed to only be usable with .223 and nothing else as far as I can figure out. I cant even put .350 Legend ammunition in it. Im stuck using AR magazines with my .350.
I don't have one to look at, but it would make sense that the mag body would have a reduced width internally to keep the .223 rounds stacked evenly and may even have guides similar to an AR mag body to keep them "in place" and may be why the straight-walled 350 won't go in it. .223 mags wouldn't give me the increased OAL anyway.
I may likely keep an eye out for a spare American stock and short action magazine and do my experimenting on them next year.
Posts: 285
Threads: 10
Joined: Feb 2018
Finally have an update:
It would take far more work than I want to exert for this project to be perfected. Major problem is that when a round is stripped from the rotary magazine, a second round gets stripped by a notch on the bolt farther back just as the first round is coming out of the magazine.
A post by Grayfox correctly outlines that the current RAP bolt will not support feeding from the old rotary mags without modification of the bolt. That, I am NOT going to do.
"The RAP (using the AR mag) in this latest iteration has a change to its bolt, a cut-out in the lower part to allow a double stack feed to work. The earlier bolts were shaped on the bottom to feed from a single stack, aka the rotary mags." - Grayfox
