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Old 05-10-2008, 12:09 AM   #1
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MCA Sports Chamber Adapters

Are they still in business?I bought an adapter for my Lone Eagle 22\250 so I can fire 22 Hornets in it also it worked so well that I wanted them to make me an adapter to fire 7.62X25 in my Bubba Mosin Nagant in 7.62x54 of corse.Have sent them several emails with no answer.And before someone asks I bought the rifle that way back in 1975 at a pawn shop for $45.00,no sights good strong bore and 22 or airgun rings mount right where the rear sight used to be, and barrel had been cut to 18".Not fun to shoot with intended ammo,got about 400 emty new Starline 7.62x25 casings to play with,and that many 90 grain .309 Hornaday XTP bullets.May try some heavier bullets(Like a 7.62 Minie Wisper) and quiet that short barrel down.Tell me what you think of 150 grain bullets going subsonic?

Last edited by Dakoma; 05-19-2008 at 02:03 PM.
 
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Old 05-22-2008, 10:13 PM   #2
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No Coments on subcaliber Inserts

Inserts provive a lower recoil which could make a 300 Win.Mag. into a squirel gun also using modests amounts of powder cheaper to shoot and what better way to introduce a young shooter corect trigger pull for that first hunt with fullhouse loads,baging that first deer,or ElkIn my 22-250 Lone Eagle an insert alowes me to shoot 22 Hornets,why because I like to save money also they are verry acurate,and the modest report makes it easier to hit withI guess that is uninportant
 
Old 05-23-2008, 05:23 AM   #3
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Instead of inserts why not try reloading. You can make nice light loads suitable for any occasion using regular brass. Having an extra cartridge for exclusive use in the adapter is a pain in the butt IMO.

RIKA



 
 
Old 05-23-2008, 01:40 PM   #4
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Have been reloading fo 16 years,Like the Idea of carrying an insert and two diferent,handloads one for large pedators,one for smaller critters that i dont want to blow in half or ruin meat for the table.By reducing the power on my scope I can perdict inpact of bullet.Kind of like having 2 pistols in one(Double Purpose).I don't buy factory loaded ammo anymore.Just look at the price of ammo compared to 4 or 5 years ago.(I knew it was comming).
 
Old 05-23-2008, 03:45 PM   #5
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Dakoma,

Reducing scope magnification will do nothing to predict where your bullet is impacting unless something is extremely wrong with your optic and an astronomically small chance made the defect work like a BDC.

As Rika stated, with the right loading you can make any given cartridge do most anything you want within certain maximum limitations. In addition, good shot setting and placement will prevent loss of meat.

For subsonic stuff in large rounds I have pet loads and semi-custom brass (substantially less internal capacity). The custom brass is more accurate but the pet loads work fine within the maximum range of suppressed-subsonic precision rifle applications. Study and analyze pressure and powder burn profiles. This information can also apply to making heavier loads feel lighter.

Inserts are still cool and useful for some things. No longer have any myself though.
 
Old 05-23-2008, 10:14 PM   #6
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I guess all duplex reticle scopes are broken.Because you can change point of impact with subcaliber loads.Using the post below the crosshair as the aiming point for subcaliber loads.Then with a little cut and try,you find the scope power that zeroes your low-powered bullets at the desired range.Ross Seyfried of Rifle Sporting Firearms Journal(May 2001 No.195)wrote a nice article about subcaliber Inserts.(You were 11 dont know what you were reading).He also detailed special cartridges,with fillers and fast burning powders and how eratic their acuracy was.Need to find his article and read it.
 
Old 05-23-2008, 11:53 PM   #7
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Quote:
Originally Posted by Dakoma View Post
I guess all duplex reticle scopes are broken.Because you can change point of impact with subcaliber loads.Using the post below the crosshair as the aiming point for subcaliber loads.Then with a little cut and try,you find the scope power that zeroes your low-powered bullets at the desired range.Ross Seyfried of Rifle Sporting Firearms Journal(May 2001 No.195)wrote a nice article about subcaliber Inserts.(You were 11 dont know what you were reading).He also detailed special cartridges,with fillers and fast burning powders and how eratic their acuracy was.Need to find his article and read it.
Its possible that you're hitting on a place in the ballistic arc that only applies to a very specific distance. My optics don't work in a comparable way to what you're describing, otherwise I'd miss with holdovers at different levels of magnification. Tell me about your scope please. Maybe I'm just being too exact.

Seyfried had a substantial deal of hunting experience. I wouldn't doubt that he figured it close enough and deduced something along the lines of what you're describing.

Subsonics would also not be his area of expertise considering his experiences and interests, then again they aren't many peoples. I brought up subsonics because they are a special kind of reduced load, and they draw from some of what it takes to make good reduced loads. They are also something I personally know a deal about.

My pet loads don't have fillers because I don't want to screw up the cans I've been so graciously allocated. They get between .9-1 MOA, the special brass ones shoot at roughly .75, and much of both's could be shooter error simply because subsonic bullets are not very forgiving past 150 yards.

If you wanted to use fillers, a magnum primer will cover you as long as your actual powder is over ~20% case cap. Haven't had the time nor desire to play with that number.

You don't need to go down that path for simple reduced loads.

What I was reading when I was 11 doesn't really matter, but it would have been a mixture of AP Environmental books, Warhammer 40k Rulebooks, and Japanese language textbooks. My second reading of Lord of the Rings was sometime around there too, and 7 years ago would be the first Harry Potter.

Last edited by DaRkWoLf; 05-24-2008 at 12:19 AM. Reason: Edited to clarify thought.
 
Old 05-24-2008, 06:46 AM   #8
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the only problem with sub caliber inserts is that you have to carry a broken shell extractor for what ever caliber the sub unit is in. can't get it out with out it.
 
Old 05-24-2008, 04:38 PM   #9
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Quote:
Originally Posted by neolithic hunter View Post
the only problem with sub caliber inserts is that you have to carry a broken shell extractor for what ever caliber the sub unit is in. can't get it out with out it.
Depends on what you are shooting as a subcaliber.Mine is the same dementions as a 22-250 cartridge case that is drilled and chambered for the 22 Hornet,all I do is push the Hornet case out with a small steel rod.Go to MCA Sports Chamber Adapters

Last edited by Dakoma; 05-24-2008 at 10:29 PM.
 
Old 05-25-2008, 07:56 AM   #10
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small steel rod sound good for the bore.
 
Old 05-25-2008, 04:26 PM   #11
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Quote:
Originally Posted by neolithic hunter View Post
small steel rod sound good for the bore.
The adapter loads and unloads like a cartridge,the smaller cartridge fits inside the adapter and since the adapter does not extract the smaller cartridge you have to push it out with a small 4 or 5" steel rod.There are other adapters that you are thinking of that go in your chamber like for fireing 308 Win.in a 30-06 that must be removed with a broken shell remover.Go to the website at MCA Sports Chamber Adapters.They also make if I'm not mistaken adapters for shotguns SXS or over and under to fire rifle shells .I thought about installing 45-70 Inserts in my SXS shotgun,would make a good Bear gun for when you go camping.
 
Old 05-25-2008, 05:00 PM   #12
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Dakoma, do you work for MCA Sports? You seem to be pushing mighty hard.

Apologies if I misread you.

RIKA



 
Old 05-25-2008, 05:13 PM   #13
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rika your perception is astounding, it is starting to sound like an advertisement alright. ok lets say he's advertising reduced caliber adapters have been around for years. there a poor answer to a persieved problem that doesn't and will not exist. sub caliber conversions are only really viable if you are converting a know system to a lower power round. such as converting a 308 caliber ar-10 to 30 carbine. the big difference is that most conversions do not address the tell all issue, accuracy. the ciener 22 lr style of conversions sell because they don't compromise accuracy. shooting a 30 carbine in an 06 would be like shooting bird shot, same with 22-250 to 22 hornet. so as to why sub-caliber conversions don't really sell well, is because other than being able to get a smaller round to go bang, there not accurate enough to make the cost worth while.

when it comes to bear medicine, and i have had some up close and personal encounters with bears in the woods. i would say that you would be better off with the 20 gage and slugs or buckshot than with a 45/70 class of round. 45/70 would be a good choice outside of 50 yrds, but with the sighting system that is commonly used with shotguns a 50 yrd shot would be chancy at best. a shot at 100 yrds would be just stupid.
 
Old 05-25-2008, 05:15 PM   #14
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No I do not work for MCA SPORTS

Quote:
Originally Posted by RIKA View Post
Dakoma, do you work for MCA Sports? You seem to be pushing mighty hard.

Apologies if I misread you.

RIKA
If the people would go to that website they would find some little pictures that would explain what they need to know.A picture is worth a thousand Words.
 
Old 05-25-2008, 05:39 PM   #15
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Dakoma,

You seem to be making exceptions to use chamber adapters when they are not needed and/or offer no advancement in the scenarios in question.

Steel-anythings and rifled bores are not friends.
 
Old 05-25-2008, 08:13 PM   #16
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Why are you folks intent on beating Dakoma up? Just because you don't want to use the adapter doesn't mean he doesn't. He came on here looking for help and a couple people decided to belittle him instead of help him. As for will the adapters work? A 40-50 grain bullet out of a .22 Hornet flies much slower than a .22-250, but it still requires the same Rifling twist. By the way DaRkWoLf, the steel would touch the chamber not the bore. According to Wikipedia, and generally they are pretty accurate, the 7.62 X 25 calls for 1 in 10 rifling and 7.62 X 54 calls for 1 in 9.45. They seem pretty close so his idea might work. I am sure the little Tokarev round wouldn't have near the recoil that you usually have in a Mosin-Nagant. I am sure the 1 MOA or bust crowd would find the accuracy to be completely unacceptable, but it is Dakoma's rifle and it only has to make him happy.
 
Old 05-25-2008, 08:21 PM   #17
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About 23 years ago, I bought a "Navy sleeve" so I could use .308 in my .30-06 M1 Garand. After Loctiting it in as required I fired a few rounds and kept watching the sleeve be extracted on the ejected cartridge case. It was an interesting consept, but not worth much. This soured me on adapters, but steered me toward conversion kits.
 
Old 05-25-2008, 09:16 PM   #18
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Garand I am sure you were using the recommended Loctite product with the sleeve, but there is on serious problem with using it in certain places on weapons, specifically in high heat areas. If you read how to loosen the screw or bolt on the Loctite instructions it says apply heat. Hence the problem with it in the chamber, as the rifle warmed up after a few rounds, the Loctite let go. It will do the same thing on the gas key on the bolt carrier of an AR15/M16 that is why it needs to be staked, not Loctited. The high temperature products just take a little more time to let go
 
Old 05-25-2008, 11:14 PM   #19
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Quote:
Originally Posted by grumpysfc View Post
Why are you folks intent on beating Dakoma up? Just because you don't want to use the adapter doesn't mean he doesn't. He came on here looking for help and a couple people decided to belittle him instead of help him. As for will the adapters work? A 40-50 grain bullet out of a .22 Hornet flies much slower than a .22-250, but it still requires the same Rifling twist. By the way DaRkWoLf, the steel would touch the chamber not the bore. According to Wikipedia, and generally they are pretty accurate, the 7.62 X 25 calls for 1 in 10 rifling and 7.62 X 54 calls for 1 in 9.45. They seem pretty close so his idea might work. I am sure the little Tokarev round wouldn't have near the recoil that you usually have in a Mosin-Nagant. I am sure the 1 MOA or bust crowd would find the accuracy to be completely unacceptable, but it is Dakoma's rifle and it only has to make him happy.
i'm not trying to beat him up it just sounds like an advertisement thats all. as for the 22 hornet and 22-250 thing, bling ,bling, bling, the bullet diameters are different. one shoots a.224 bullet the other shoots a .223. a 7.62x25 shoots a.308 bullet while a 7.62x54 shoots a .311 bullet. they both sound like a good combination for accuracy to me. the actual correct rifling twist rate for a 150 grain to 200 grain .311 diameter projectile is 1 in 10. now if i drop a piece of steel down the bore of any weapon, do you think i could honestly believe that its not going to touch the bore someplace. well i'm in the 1 moa or bust crowd and i'm perfectly happy with my ak's shooting 1 1/2"'s at 100 yrds. took some work to get them to shoot like that but it can be done. bullet diameter is one of those little things that help make it happen. if dakoma is happy with the way his weapons shot good for him, i'm glad. don't always take an informed opinion as flaming.
PS: don't believe everything you read in Wikipedia, and no its not generally an accurate source of information, just a source.
 
Old 05-26-2008, 03:15 AM   #20
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Nor am I trying to beat up on Dakoma. I offered an apology if I was wrong in asking my question. Its just that I'm kind of suspicious of anybody who too enthusiastically promotes a product.

RIKA



 
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