Has anyone here ever attempted a conversion of a LAR Grizzly in 10mm to 10mm Mag?
If so, I would like to hear some comments.
Anyone familiar with the Grizzly's can weigh in also. Thanks
There was a thread about someone doing it but that was a few years back. I've thought about it myself.
Thanks for the reply.
I ran a search on the topic and came up with nothing. I do not have the 10 mm conversion for my 45 Win Mag and they are expensive so I would like a little guidance first.
I also would like to try a 357 Rem Mag conversion to 357 Auto Mag. I know a guy who did that one and it works great.
I will keep looking.
As a newbe to this site...
I tried an AR in 10mm mag years!! Ago, I could never get it to run 100%. I'm sure it was just me, just food for thought. Those long straight cartridges need perfect angles. 357 amp is so easy to form.....
The feeding of a long, slender cartridge is one thing I am worried about.
Also the extractor-ejector function.
I was looking for a 357 mag barrel and came onto a 10 mm conversion and I started thinking about the 10mm Mag.
I talked to the guy who sold this and he has shot just about all the Grizzly calibers and he said his 357 AMP was his favorite. The bottleneck design should work great in the grizzly. The price on this one went way outa site IMO.
https://www.gunbroker.com/item/879290765
Well I found a source for 357 Auto Mag barrels for the Grizzly! :)
They have not announced them yet so I won't post it here.
A 10mm Magnum LAR Grizzly barrel sold on GunBroker about 6 months ago.
It was a 10mm Auto barrel rechambered to Magnum.
Tony
Quote from: TonyRumore on October 20 2020 02:22:31 PM MDT
A 10mm Magnum LAR Grizzly barrel sold on GunBroker about 6 months ago.
It was a 10mm Auto barrel rechambered to Magnum.
Tony
I trust your expertise Tony, do you see any problems with this conversion on the Grizzly?
I have a friend that says the cost to convert one would be about a $1000 including a new barrel.
Quote from: Harleycolt on October 21 2020 09:02:02 AM MDT
I have a friend that says the cost to convert one would be about a $1000 including a new barrel.
You need to buy a 10mm conversion kit and they are not cheap. That gives you the magazine, barrel, extractor, ejector, and bushing.
You would need to purchase or find someone with a 10mm reamer and remove the spacer in the magazine and you should be set.
I would really like to talk to someone that has done it to see what problems if any you might run into.
https://ar15armory.com/forums/topic/39786-10mm-magnum/
Quote from: Harleycolt on October 21 2020 07:19:22 PM MDT
https://ar15armory.com/forums/topic/39786-10mm-magnum/
Thanks for the link, it looks to be feasible at least. I had not really thought about the magazine follower but that should not be a major problem.
I am having second thoughts about the whole thing. The 10mm conversions cost as much as a normal gun does and I have not found anything but 5.4" barrels and I would like something longer. It is possible they never made any other lengths.
I have not given up the idea, just giving it more thought. I am still going to go ahead with the 357 Auto Mag conversion.
They did do so 6.5" barrels and even fewer 8 and 10 inch ones as well. Think they were special order though. Think my friend from Michigan bought a 10mm magnum conversion off of gun broker a few months ago. I'll check with him to see for sure and if he likes it.
Quote from: Harleycolt on October 23 2020 08:39:43 AM MDT
They did do so 6.5" barrels and even fewer 8 and 10 inch ones as well. Think they were special order though. Think my friend from Michigan bought a 10mm magnum conversion off of gun broker a few months ago. I'll check with him to see for sure and if he likes it.
I would appreciate hearing his opinion and if there are any problems as far as the conversion. I'm leaning toward abandoning the project right now but with some encouragement who knows. ;)
Thanks for your input
Found a guy in Texas who has his Grizzly converted to 10mm Mag and researched it for a year before he did his.
He runs the 45 Win Mag recoil spring, extractor, and ejector. He's running a 45 Win Mag magazine even with the feed lips modified. The guy he got most of his info from has run about 2000 flawless rounds through his with the same setup.
His is a 6 1/2" barrel and I am trying to find one. He thinks a 5.4" barrel with a Grizzly Comp would be a good setup also.
Good luck Beemer, sure would be an interesting pistol for sure!
Well, this took way longer than it should have but I picked up the LAR Grizzly with the new 10 mm Magnum conversion barrel yesterday.
They said the reamer would take 12-13 weeks to get into production and I finally received it 17 weeks later. It was a 10mm Auto reamer instead of the magnum. I sent it back and it took 5 more weeks to get the right one.
By that time my Gunsmith had taken another job and closed his shop. He owed me a favor so he said he would work it in somehow. Anyway I picked it up from him yesterday and he though everything lookd like a go, even the 45 Win Mag Magazines seem to work without any mods. He did not fire it though.
Here it is with the 45 Win mag barrel, the reamer, a 45 WM round, and a 10mm mag round. Both barrels are 6 1/2" long.
Wow that's awesome Beemer! Hope the 10mm runs well as it should
Nice!!!
I have a couple of spare 10mm Grizzly barrels here......I should probably ream them to 10mm Magnum.
I think I have a 5.4", 6.5" and two 8 inchers.
Tony Rumore
Tromix
Quote from: BEEMER! on January 23 2022 09:39:24 AM MST
Well, this took way longer than it should have but I picked up the LAR Grizzly with the new 10 mm Magnum conversion barrel yesterday.
They said the reamer would take 12-13 weeks to get into production and I finally received it 17 weeks later. It was a 10mm Auto reamer instead of the magnum. I sent it back and it took 5 more weeks to get the right one.
By that time my Gunsmith had taken another job and closed his shop. He owed me a favor so he said he would work it in somehow. Anyway I picked it up from him yesterday and he though everything lookd like a go, even the 45 Win Mag Magazines seem to work without any mods. He did not fire it though.
Here it is with the 45 Win mag barrel, the reamer, a 45 WM round, and a 10mm mag round. Both barrels are 6 1/2" long.
PTG.
No wonder the reamer was wrong and took longer than expected.
Sent from my iPhone using Tapatalk Pro
I will have to agree with you.
Even after I sent them a picture of the wrong reamer they would not return my calls. Finally, I got in touch with a someone handling customer service who told me he just started two weeks before and he got the ball rolling. I had the correct reamer in 10 days thanks to him.
Pacific Tool and Gauge was the only compny who would sell to me and take my order. The other companies were so far out on delivery they would not take any small orders from buyers who are not steady customers.
I have dealt with Clymer before and they are good to deal with.
Quote from: BEEMER! on January 26 2022 05:50:09 AM MST
I will have to agree with you.
Even after I sent them a picture of the wrong reamer they would not return my calls. Finally, I got in touch with a someone handling customer service who told me he just started two weeks before and he got the ball rolling. I had the correct reamer in 10 days thanks to him.
Pacific Tool and Gauge was the only compny who would sell to me and take my order. The other companies were so far out on delivery they would not take any small orders from buyers who are not steady customers.
I have dealt with Clymer before and they are good to deal with.
That?s odd. I had no problem ordering a custom reamer from Manson. They were happy to help and actually made some suggestions for adjustments I had overlooked.
Sent from my iPhone using Tapatalk Pro
At one time, PTG made good stuff. That all went away about 15 years ago.
It's a complete crap-shoot what you're going to get from them these days.
Man-oh-man, how I wish IMI or Magnum Research would offer a Desert Eagle in 10mm Magnum.
Start with a 6-in barrel as standard, then offer an optional 10-in hunting barrel like they did with the .357 & .44 Mag Deagles.
Mag capacity could probably get close to 9-rds, or at least more than with their .44Mag and 50AE models.
I had one and a friend had one both in .45 Win mag ( he had conversion kits) and it was pretty impractical... heavy, big in the frame and not accurate enough (to me) for field use.
We both had reliability issues and I was never comfortable with the WM brass and full power loads so I made my own brass from .308.
I was happy to get rid of it. My buddy's .45 (he had .357 and 10mm conversions for it also) was disused also and wound up a safe queen till he passed away and AFAIK it wound up sold to a pawn shop by his heirs.
I can think of a half dozen revolvers I'd have before a Grizz.
My LAR Grizzly has been with me for many years. My LAR has many conversions among my favorites are to the 10mm and the .357 remington mag. The .45 win mag has comforted me in brown bear country here in Wyoming.
I have to say that the LAR Grizzly is far from my favorite pistol to shoot but they are a fine and well made firearm. Accuracy in my opinion is very good. I have to say that I can shoot big bore magnum revolvers better but I feel that is more me than the firearm.
I have had a S&W 610 ever since Smith's first run and I thought long and hard about converting it to 10mm Mag but it is one of my favorite reolvers to shoot and I decided to leave it as it is.
I have not shot the LAR 10mm Mag yet. The snow has just melted off here and the ground is still froze and it ranges from icy, to sloppy, to having water standing so I'm waiting for things to get better.
Congratulations glad you finally got it!
I'm interested to see how this turns out. I was POed in the 90's when LAR up and quit part support for all handguns. My 45 WM needed a barrel after I ported the factory barrel and then the barrel developed a hump between the ports. I found a used barrel 10 years later and it is now up and running.
Tony, I could be talked into 1 of your surplus barrels
Jim B, where in WY?? We might be close.
Quote from: agtman on February 27 2022 10:01:52 AM MST
Man-oh-man, how I wish IMI or Magnum Research would offer a Desert Eagle in 10mm Magnum.
...
I wish they'd offer one in 45 Win Mag, but the one person I talked to, who I do believe was from the company, said it was super unlikely to ever happen. I really like 45 Win Mag and it at least was a lot cheaper to shoot than some of the other cartridges they chamber the DE in. It isn't breaking my heart, though.
Yes, I have bought parts from the fellow in Texas. My Grizz .45 Win Mag was patented by an old friend . I own these 1911 Grizz conversions .357 Remington, 10mm pistol.
No I have never used the 10MM in my 1911 Grizz. My collection of 10MM handguns numbers 15 . I like them all the Colt Delta Elite is a big favorite. For heavy loads and hunting the SIG P220 is great. I do use the 1911 Grizz .357 conv set and shoot 200 grs powder coated hard cast bullets.
Got any contact info for the guy in TX?