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Next up for my wildcats the .22 HELLCAT

12/30/2015

8 Comments

 
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This week thought I would talk about what i am working on now. I just got in the first barrels of my latest wildcat round I designed the 22 Hellcat. The Hellcat came about when a couple of us got to talking and really wanted a 22-250 in an AR. I wanted to do a simple cat for once that didn't require a lot of brass work so I started messing with cases and numbers.

 After running some numbers and making a few dummy rounds to see how bullets fit in the case I ran my conclusions by the guys. After a bunch of discussion I pooled the ideas and came up with the Hellcat. No the Hellcat isn't really all new in basic form it has been done in the 22x47 lapua but the case was too long to fit in the AR magazine so I decided to trim the case to 1.8 inches and make the round for light bullets only. So if you can find 22x47 lapua dies they will work for this cat.

The Hellcat is a 6.5x47 lapua case necked down to .224 and then trim the case to 1.8 inches that is it. just neck down and trim. Shoulder position is in the same place as the 6.5x47 no neck turn or ream. That makes this a very simple wildcat that anyone can enjoy. It is maxing out the case and AR magazine but it will fit 65 grain sierra bullets on down.

Performance estimates put it just ahead of the 22-250 but i will be happy with 22-250 performance. Case capacity is 46.3 grains on fresh formed brass which puts it about 2 grains more than most 22-250's

Below are the performance estimates for a 22 inch barrel.

 In the first batch of barrels we have 6 22 inch and 1 20 inch with half 10 twist and half 12 twist.  If staying 55 grain and under the 12 twist is just fine I wanted to test the 65's so I got a 10 twist.

 With the overbore status of this round I don't expect great barrel life. It should be on par with the 22-250 but the flat out performance for the AR15 on varmints will be worth it. 
8 Comments
JR
1/10/2016 07:55:24 am

Definitely interested in the hellcat for a 'yote gun.

Reply
Bruce Finnegan
1/10/2016 10:04:54 am

i will be taking first shots next weekend so the fun begins.

Reply
Rick bonnell link
1/19/2017 03:16:04 am

a friend of mine and myself have been wanting to build a bigger faster 22 that we could feed in an a r15 I'd love to have you send me any and all data you've gotten on this round. Ie especially who you went through for your barrel vender as I've been saying we need to do this out of either one of the twist rates that you went with as I only want it for a varmint rig and shoot 50-55 gr bullets. Great job on the caliber. Really cool

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Bruce Finnegan
1/19/2017 06:37:43 am

Rick,

you can go to the forum to read on all the data with the hellcat http://mdws.forumchitchat.com/?forum=557733 we have used green mountian blanks and x caliber blanks for the hellcat both shoot great. my pet load right now is the 40 nosler bt with arcomp it is at max but shoots sub .5 moa running 4100fps.

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Bradley J Smith
7/8/2022 07:26:12 am

Are you still making barrels for the 22 Hellcat?
Current pricing and availability?

Reply
Bruce Finnegan
7/8/2022 07:37:14 am

yes i still make them custom order as with all the wildcats i make. you choose all the specifics, profile length, and threads or target crown. i can even flute straight adds 100 and spiral adds 140. 8-12 weeks is the norm. a barrel with custom bolt and extension is 615 plus 15 shipping.

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Bradley J Smith
7/9/2022 08:02:25 pm

Bruce, thanks for info.
Are you BIGGDAWG in other forum?
Does that price include a bcg (was mentioned in another forum) ?
Is there anyone offering prepped brass for the 22 hellcat?
I'm interested in running 53 V-Max for coyotes. Any info on that bullet or another suggestion would be great!
Do you run a gunsmith shop or what is your background? Thanks

Reply
Bruce Finnegan
7/10/2022 08:22:55 am

Yes i am BIGGDAWG, yes i designed the 22 Hellcat along with 50 other wildcats. i am partners in MDWS - Mad Dog Weapon Systems, i make all of their barrels now and have designed most of our wildcats.

that price is barrel with bolt not bcg it don't include a carrier i am the same person you are talking to in the forum and it is the best place to talk not here on blog comments.

as stated before this is a wildcat there is no premade brass for it. the hellcat is one of the easiest cats to do so if you can't or don't want to make the brass for it i won't make you a barrel plain and simple. ya neck down 6.5x47 brass to 22 cal using a 6x47 bushing die and step down bushings 268,262,252,249 trim to 1.8 inches load and shoot.

bullet wise the 50 vmax fits better than the 53 vmax because the 53 is longer. If you have done your research you need to run PRI 6.8 spc mags first the rounds fit best also they allow 2.295 oal which with the tipped bullets is required.

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