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Callahan speedlock upgrade

 
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  #1  
Old 05-21-2012, 03:58 PM
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Callahan speedlock upgrade

I have what used to by a 700 LSS in 375 rum, I put a Timney in it, extended magazine box, and a CSR brake then dropped it in a B&C Medalist stock. The rifle shoots pretty good but the Ugly J lock was bugging me so I got online and ordered a Bolt Tool and Callahan Speedlock firing pin assembly. Initially I was a little disgusted because the shroud required a little fitting to allow the bolt down the raceway smoothly but it was fairly mild, just a little time and sand paper then steel wool to shine it back up. once I finally had the proper fitment I dry fired a couple times and could already tell a huge difference in vibration. Last night I finally got a chance to go shoot at the range. First I dry fired a few times and the crosshairs had zero movement which was certainly different because this rifle had a ton of vibration before in anything less than a perfect rest. Then I decided to shoot a couple groups. This is where I was very impressed, it cut my groups from the .6-.7 range to the .3-.4 range. I can honestly say this was one of the best $50 I have spend on an upgrade for a 700.
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Get a JOB! I already feed the bears, I dont need to feed you too!

" Real elk guns start with the number 3 or bigger and blow two holes, one in and one out." - My Dad
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  #2  
Old 05-22-2012, 11:44 AM
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Re: Callahan speedlock upgrade

Quote:
Originally Posted by Tikkamike View Post
I have what used to by a 700 LSS in 375 rum, I put a Timney in it, extended magazine box, and a CSR brake then dropped it in a B&C Medalist stock. The rifle shoots pretty good but the Ugly J lock was bugging me so I got online and ordered a Bolt Tool and Callahan Speedlock firing pin assembly. Initially I was a little disgusted because the shroud required a little fitting to allow the bolt down the raceway smoothly but it was fairly mild, just a little time and sand paper then steel wool to shine it back up. once I finally had the proper fitment I dry fired a couple times and could already tell a huge difference in vibration. Last night I finally got a chance to go shoot at the range. First I dry fired a few times and the crosshairs had zero movement which was certainly different because this rifle had a ton of vibration before in anything less than a perfect rest. Then I decided to shoot a couple groups. This is where I was very impressed, it cut my groups from the .6-.7 range to the .3-.4 range. I can honestly say this was one of the best $50 I have spend on an upgrade for a 700.
I have a Tubbs in my 700, and it works pretty good. Lock time is noticebly faster. But I have a lingering thought in the back of my head about it. I got the feeling that it hits the primer so hard that it might be moving the case in the chamber (I know I can't prove it). I use the alloy firing pin, and a spring that looks like it came out of a race hemi. Would like to try a lighter spring weight sometime. The one for sure plus I saw from it was a much more consistent ignition. I also put one in a Savage 112, and really saw improvement, with a locktime at least as fast as the short action Remington with a speed lock kit (maybe faster). But as I said I still wonder if hitting the case that hard is moving the case, plus I also kinda worry about the firing pin bouncing on the primer.
gary
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  #3  
Old 05-22-2012, 11:49 AM
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Re: Callahan speedlock upgrade

My thought was actually the opposite, yes its faster but its half the weight... will it hit it hard enough with the lack of weight to give good ignition in all temperatures? I guess time will tell as I plan to use this rifle a lot this year here in wyoming some days will be 80* some will be in the -'s, if I have any problems ill be sure to post. but so far im very happy
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Get a JOB! I already feed the bears, I dont need to feed you too!

" Real elk guns start with the number 3 or bigger and blow two holes, one in and one out." - My Dad
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  #4  
Old 05-22-2012, 05:59 PM
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Re: Callahan speedlock upgrade

Quote:
Originally Posted by Tikkamike View Post
My thought was actually the opposite, yes its faster but its half the weight... will it hit it hard enough with the lack of weight to give good ignition in all temperatures? I guess time will tell as I plan to use this rifle a lot this year here in wyoming some days will be 80* some will be in the -'s, if I have any problems ill be sure to post. but so far im very happy
well there's nothing scientific about my thoughts for sure. Just lingering thoughts.The ignition with the Remington did seem a little more consistent, but what I was seeking was a reduction in group size. I couldn't prove it helped, but also couldn't prove otherwise. I installed it prior to all the trigger problems I went thru with that Remington, so there's no accurate base to form an opinion over. But where I did see some improvement in was when I shot off hand. The groups seemed better all the time.
gary
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  #5  
Old 05-22-2012, 09:00 PM
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Join Date: Apr 2010
Location: Allen, TX
Posts: 2,608
Re: Callahan speedlock upgrade

Quote:
Originally Posted by Trickymissfit View Post
I have a Tubbs in my 700, and it works pretty good. Lock time is noticebly faster. But I have a lingering thought in the back of my head about it. I got the feeling that it hits the primer so hard that it might be moving the case in the chamber (I know I can't prove it). I use the alloy firing pin, and a spring that looks like it came out of a race hemi. Would like to try a lighter spring weight sometime. The one for sure plus I saw from it was a much more consistent ignition. I also put one in a Savage 112, and really saw improvement, with a locktime at least as fast as the short action Remington with a speed lock kit (maybe faster). But as I said I still wonder if hitting the case that hard is moving the case, plus I also kinda worry about the firing pin bouncing on the primer.
gary
According to BartB, any firing pin will move the cartridge forward in the chamber and a weak firing pin is the worst as it won't adequately center the round with the angled shoulder firmly against the front of the chamber.

Not sure if I agree or disagree. And, perhaps I'm misinterpreting his statements... you might go back and check his recent thread about centering in the chamber.

--richard
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  #6  
Old 05-23-2012, 09:51 AM
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Location: greenwood, IN
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Re: Callahan speedlock upgrade

Quote:
Originally Posted by rscott5028 View Post
According to BartB, any firing pin will move the cartridge forward in the chamber and a weak firing pin is the worst as it won't adequately center the round with the angled shoulder firmly against the front of the chamber.

Not sure if I agree or disagree. And, perhaps I'm misinterpreting his statements... you might go back and check his recent thread about centering in the chamber.

--richard
I'm more or less worried about a double or multi strike by the firing pin bounching on the primer face. I didn't install one on my Mod. 12 Savage because folks that knew advised me not to. But It was my brain storm to try it in the 112, plus a Win. 70 and the Remington. Saw the biggest difference in the Winchester with the Remington right in there as well. As for moving the case forward, he's right. How much can be debated till the end of time (our numbers are different). What I liked most was the faster lock time in the Remington because I tend to shoot the rifle off hand most of the time (I hunt coyotes with it about 80% of the time). I see nothing wrong with the idea, but how much it helps I'm not positive. So maybe it just helps me mentally
gary
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  #7  
Old 05-23-2012, 10:22 AM
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Join Date: Dec 2009
Location: 4422′44″N 1082′35″W
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Re: Callahan speedlock upgrade

Quote:
Originally Posted by rscott5028 View Post
According to BartB, any firing pin will move the cartridge forward in the chamber and a weak firing pin is the worst as it won't adequately center the round with the angled shoulder firmly against the front of the chamber.

Not sure if I agree or disagree. And, perhaps I'm misinterpreting his statements... you might go back and check his recent thread about centering in the chamber.

--richard
I neck size only and only partially move the shoulder back when necessary because I like my shells in the chamber tight and centered. Which leads me to believe my firing pin doesnt move my case at all in the chamber.. any knowledge on this? I had never considered this theory before.
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Mike

Get a JOB! I already feed the bears, I dont need to feed you too!

" Real elk guns start with the number 3 or bigger and blow two holes, one in and one out." - My Dad
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