Sorry but… What was the difference? I’ve watched this video 3 times and haven’t actually been able to determine what the effect of the modified firing pin is??
Thanks for making a video about the firing pins. It looks like you go all out to try to make a improvement in your performance. I have found that the biggest difference that I have gotten is with the Neil walk 22LR die. It will make ordinary ammo amazing and amazing. Now the cat is out of the bag.
RUclips keeps unsubscribing me from your channel. If it were me, I'd be recording every instance where this occurs, then handing it off to multiple Capital Hill representatives. I'd be very angry that this will cost you money. I check back a couple times daily now . . . and resubscribe. Great work.
In RFBR firing pin shape and strike is not about ES or SD but about firing pin induced vibration affecting the accuracy , would be interesting to test that as well
I need some education, why is there a difference between the performance of the firing pins? I thought ones the pin stricks the rim and crushes the edge they would all do the same!
Firing pins are a fun tweak and easy to do with a file and some time. That little bit of difference adds up when it comes to keeping precision at long range with rimfires. However, I’m not a fan of the modification as shown in the video which also appears to be the modification design that Modacam uses. All due respect to Modacam as I know they put out some of the best if not the best rimfire custom rifles but the modification makes me uneasy. Looking at an unmodified CZ firing pin the entire face is flat. The benefit of this is that when dry-fired the entire face of the firing pin strikes the rear face of the breach. Therefore, when you dry-fire you do not peen the edge of the chamber and create the dreaded burr and ruin the chamber which is the cause of the rule of not dry firing rimfires. If you look at the modification design that is in the video and that Modacam uses you will see that if you were to dry-fire with that firing pin design the only part of the breech that would be contacted is the edge of the chamber and could potentially cause damage. I like to leave the fat part of the firing pin up top untouched so that if the gun is dry-fired it will contact the back of the breechface and prevent the firing pin for peening the chamber mouth. I know when shooting I occasionally lose count of the rounds I fire and accidentally dry-fire on an empty chamber. Just removing metal on the thin part of the CZ firing pin between the tip that you want to contact the round just inside of the rim edge and the part where it gets fat gives you the same bit of improvement on ignition while still maintaining a dry-fire safe firing pin. Just my thoughts on CZ firing pins. But I’m open to learning more if anyone has a explanation for me being incorrect.
I noticed on my CZ 457 that when you rotate the bolt handle and release the tension on the firing pin, it comes to a stop with the front face of the pin being flush, or slightly behind, the bolt face. So, there appears to be a mechanical stop farther back that prevents forward movement of the firing pin. In theory, this would prevent the face of the modified pin from coming in contact with the edge of the chamber or breech face. However, if this mechanical stop begins to change/deform with repeated dry fires, it could cause the face of the pin to actually come in contact with the breech face. If you're interested, check out my post in the CZ-BRNO forum on Rimfire Central titled, "Dryfire-safe firing pin".
@@markthibault8579 ohhh fair point. For some reason I was thinking it was a rebounding firing pin. However, when I took the bolt out just now I see I was wrong. I learned something new.
Didn’t think it was going to make that much difference. Cool review. Which one did you put in or did you just modified it yourself. I looked it up to see what was changed. Never thought about not hitting the rim. Thought that was where the primer was, guess not. I’ll have to look at my 10/22 and my model 41 and see how they strike the round. Congrats, even after all these years you still find cool stuff to show.
@@PursuitofAccuracy any chance you know why they modify it so it doesn’t touch the rim since that’s where the primer is? Can’t figure out how that makes any sense. Tried looking it up but found no explanations in the forums just the different shapes used.
Having read the comments thus far, it seems that everybody agrees that modding the firing pin is beneficial. My question is mod to look like what? What am I looking for on the pointy end? Good video. Thanks Josh.
No modified firing pins that's cheating LOL just kidding. I really enjoyed this video thank you for taking the time and putting in the work. This is AWESOME data to have because I NEED ALL THE HELP I CAN GET!
It's amazing how something as simple and common as a firing pin can add value to your consistency. I'm a big fan of MDT. What chassis are you using on your build? Great video as always. Keep 'em coming!
Questions not comments, Do you know of anyone who makes a 6 power hunter BR scope and sources for SK rifle match. As per your suggestion to buy one or two boxes of each lot then a quick test of each and a buy of a brick or two of the best lot. I know you have posted the information before but I couldn't find it again. Thanks
Thanks for posting this Josh . If it gave a proportional improvement on ammo with a greater spread and sd , it could prove to have greater effect on cheaper ammo . Did you use a Modcam pin , or Pete’s for the modded pin?
Look on last 5 shots on stock firing pin. Lowest speed went from 1095 to 1088 and that’s made the difference in my opinion. Before SD was 5.05 better than modified FP. Unfortunately we can’t see last 5 shots true speed on chrono at lest I didn’t see it.
good evening . i am new to your videos and think it is great !!!!! I am from South Africa so we are always a couple of years behind the rest of the world. What trigger are you using in this 457 ?
Been running the YoDave extra power firing pin spring since Day 1 on my MTR. Since I’ve never run a match with factory spring, I can’t compare directly… But I can’t help but wonder if it’s why my otherwise factory class MTR shoots better than most, it’s also not very picky about ammo FWIW.
Hey what brand of chronograph do you have in this video.?I have Labradar, BulletSeeker/ SpeedTracker gen 2 and now Garmin Xero .Do you like? Would you buy again?.
Why is it better is it getting more consistent striking force on the rim that's doing it ? Is there a spring that comes with it or is the same bolt spring used ?
Same spring is used. Its optimizing the strike of the pin with current pinfall energy. Im going to test a heavier spring and see if it makes a difference
At 50 yards the sd and es arent gonna effect groups, not enough to distinguish between the other variables; shooter, wind, etc. At distance you will see it but youd need a no wind day to actually say its the firing pin
Where can I find the RULES for NRL22 , both rimfire production, and also airgun? Im new, interested in entering, but I have sooo many unanswered questions....Thanks in advance,
Yes, Ive done that, but still many unanswerd questions. Like ...Can you drill a thumbhole in a CZR457 MTR walnut stock and still qualify as "base' or "production" class? And the airgun rules are even less specific! But thank you for your reply. Greatly appriciated.@@PursuitofAccuracy
@@AnotherJonDoe right now i believe that would be fine. May be a rule change coming at some point so i wouldnt go too crazy. Ultimately i tell everyone to just shoot open if your enjoying the sport. Airguns are the wild west right now, meet the basic rules and its good to go.
100X. My 455 build is may be 8 years old. The pin work wasn't optional by that time - the gunsmith highly recommended it . If you want we can send you pictures to you and you can share different profiles in your channel. Have brand new pin coming strait from CZ factory next week. @@PursuitofAccuracy
Love your channel
Would like to see exactly what you do to a Stock 457 right out of the box to competition ready
Like your testing. No BS just like it is. Found similar results when testing firing pin strikes in other brand rifles.
Sorry but…
What was the difference? I’ve watched this video 3 times and haven’t actually been able to determine what the effect of the modified firing pin is??
Seemed like one round threw it off, the factory pin was looking good up to that point. Interesting stuff! Thanks for the education.
Yeah thats usually what i see. The factory pin is more prone to that 1 bad ignition that messes things up
Verrrrry interesting. ...never thought a firing pin has secrets .
Haha
Thanks for making a video about the firing pins. It looks like you go all out to try to make a improvement in your performance. I have found that the biggest difference that I have gotten is with the Neil walk 22LR die. It will make ordinary ammo amazing and amazing. Now the cat is out of the bag.
RUclips keeps unsubscribing me from your channel.
If it were me, I'd be recording every instance where this occurs, then handing it off to multiple Capital Hill representatives. I'd be very angry that this will cost you money.
I check back a couple times daily now . . . and resubscribe.
Great work.
I appreciate you coming back brother. Yeah it sucks big time these days
Awesome video Josh and always very interesting plus I certainly learnt something new today
Thanks Josh! I just reshaped mine. We'll see how much it will improve "stats" :)
In RFBR firing pin shape and strike is not about ES or SD but about firing pin induced vibration affecting the accuracy , would be interesting to test that as well
I need some education, why is there a difference between the performance of the firing pins? I thought ones the pin stricks the rim and crushes the edge they would all do the same!
Firing pins are a fun tweak and easy to do with a file and some time. That little bit of difference adds up when it comes to keeping precision at long range with rimfires.
However, I’m not a fan of the modification as shown in the video which also appears to be the modification design that Modacam uses. All due respect to Modacam as I know they put out some of the best if not the best rimfire custom rifles but the modification makes me uneasy. Looking at an unmodified CZ firing pin the entire face is flat. The benefit of this is that when dry-fired the entire face of the firing pin strikes the rear face of the breach. Therefore, when you dry-fire you do not peen the edge of the chamber and create the dreaded burr and ruin the chamber which is the cause of the rule of not dry firing rimfires. If you look at the modification design that is in the video and that Modacam uses you will see that if you were to dry-fire with that firing pin design the only part of the breech that would be contacted is the edge of the chamber and could potentially cause damage. I like to leave the fat part of the firing pin up top untouched so that if the gun is dry-fired it will contact the back of the breechface and prevent the firing pin for peening the chamber mouth. I know when shooting I occasionally lose count of the rounds I fire and accidentally dry-fire on an empty chamber. Just removing metal on the thin part of the CZ firing pin between the tip that you want to contact the round just inside of the rim edge and the part where it gets fat gives you the same bit of improvement on ignition while still maintaining a dry-fire safe firing pin.
Just my thoughts on CZ firing pins. But I’m open to learning more if anyone has a explanation for me being incorrect.
I noticed on my CZ 457 that when you rotate the bolt handle and release the tension on the firing pin, it comes to a stop with the front face of the pin being flush, or slightly behind, the bolt face. So, there appears to be a mechanical stop farther back that prevents forward movement of the firing pin. In theory, this would prevent the face of the modified pin from coming in contact with the edge of the chamber or breech face. However, if this mechanical stop begins to change/deform with repeated dry fires, it could cause the face of the pin to actually come in contact with the breech face. If you're interested, check out my post in the CZ-BRNO forum on Rimfire Central titled, "Dryfire-safe firing pin".
@@markthibault8579 ohhh fair point. For some reason I was thinking it was a rebounding firing pin. However, when I took the bolt out just now I see I was wrong. I learned something new.
@@austinkroe i learn new stuff every day from comments and tbe guys on the discord. Appreciate the comment!
Didn’t think it was going to make that much difference. Cool review. Which one did you put in or did you just modified it yourself. I looked it up to see what was changed. Never thought about not hitting the rim. Thought that was where the primer was, guess not. I’ll have to look at my 10/22 and my model 41 and see how they strike the round. Congrats, even after all these years you still find cool stuff to show.
Thanks brother, thats the modacam firing pin
@@PursuitofAccuracy any chance you know why they modify it so it doesn’t touch the rim since that’s where the primer is? Can’t figure out how that makes any sense. Tried looking it up but found no explanations in the forums just the different shapes used.
Having read the comments thus far, it seems that everybody agrees that modding the firing pin is beneficial. My question is mod to look like what? What am I looking for on the pointy end?
Good video. Thanks Josh.
Email me. Josh@pursuitofaccuracy.com
thanks for sharing all these great videos sir
This was a good video thanks Josh
No modified firing pins that's cheating LOL just kidding. I really enjoyed this video thank you for taking the time and putting in the work. This is AWESOME data to have because I NEED ALL THE HELP I CAN GET!
Haha thanks brother
It's amazing how something as simple and common as a firing pin can add value to your consistency. I'm a big fan of MDT. What chassis are you using on your build? Great video as always. Keep 'em coming!
Im using the acc premiere
Modified mine no issues so far.
I didn't expect there to be a difference.
Another great video
Questions not comments, Do you know of anyone who makes a 6 power hunter BR scope and sources for SK rifle match. As
per your suggestion to buy one or two boxes of each lot then a quick test of each and a buy of a brick or two of the best lot.
I know you have posted the information before but I couldn't find it again. Thanks
How did the groups compare?
Is dry firing ok with modified pin. Im doing a lot of dry firing to improve off hand shooting. (using 541s).
ThanksBill
Thanks for the info
Thanks for posting this Josh . If it gave a proportional improvement on ammo with a greater spread and sd , it could prove to have greater effect on cheaper ammo . Did you use a Modcam pin , or Pete’s for the modded pin?
Modacam pin
I know someone that would put this down to statistical anomaly... not that either one is better or worse 🤷
Modified firing pin: ruclips.net/video/bfpbx3I8WzE/видео.html
Unmodified firing pin: ruclips.net/video/bfpbx3I8WzE/видео.html
Another Great Video 💯 Thank you💥💥💥💥💥💥💥
Appreciate ya brother!
Interesting. The difference in the results seem quite slight to me. What is the factor that shows the modified pin to be bettter? Lower SD? Higher BC?
Look on last 5 shots on stock firing pin. Lowest speed went from 1095 to 1088 and that’s made the difference in my opinion. Before SD was 5.05 better than modified FP. Unfortunately we can’t see last 5 shots true speed on chrono at lest I didn’t see it.
good evening . i am new to your videos and think it is great !!!!! I am from South Africa so we are always a couple of years behind the rest of the world. What trigger are you using in this 457 ?
Timney
I think you would see better results with the stock firing pin and a stronger firing pin spring.
Ive found heavier firing pin springs are bandaids to ignition and headspace issues.
But if I can find one i will test it
@@PursuitofAccuracy I fixed my headspace issue with bolt shims. It is now at .043". YoDave has a +10% spring.
Been running the YoDave extra power firing pin spring since Day 1 on my MTR. Since I’ve never run a match with factory spring, I can’t compare directly… But I can’t help but wonder if it’s why my otherwise factory class MTR shoots better than most, it’s also not very picky about ammo FWIW.
Hey what brand of chronograph do you have in this video.?I have Labradar, BulletSeeker/ SpeedTracker gen 2 and now Garmin Xero .Do you like? Would you buy again?.
Thats the fx true ballistics and i like it
Nice video, Can we share it in our feeds?
Yeah of course
Hey, if you had to pick two rimfire rifles: 1 under $1000 and 1 over $2000, which two would you pick?
Thanks
457 and a vudoo
Why is it better is it getting more consistent striking force on the rim that's doing it ? Is there a spring that comes with it or is the same bolt spring used ?
Same spring is used. Its optimizing the strike of the pin with current pinfall energy. Im going to test a heavier spring and see if it makes a difference
I wonder will this mod affect firing pin premature wear (since there is less material left)
What you think Josh?
I doubt it honestly.
I havent been able to wear out the factory one so dont think these will either
When are you getting a Garmin Xero C1 Pro?
Not anytime soon
What about group sizes?
At 50 yards the sd and es arent gonna effect groups, not enough to distinguish between the other variables; shooter, wind, etc.
At distance you will see it but youd need a no wind day to actually say its the firing pin
Where can I find the RULES for NRL22 , both rimfire production, and also airgun? Im new, interested in entering, but I have sooo many unanswered questions....Thanks in advance,
Go to the nrl22 website. They have all the rules and divisions there
Yes, Ive done that, but still many unanswerd questions. Like ...Can you drill a thumbhole in a CZR457 MTR walnut stock and still qualify as "base' or "production" class? And the airgun rules are even less specific! But thank you for your reply. Greatly appriciated.@@PursuitofAccuracy
@@AnotherJonDoe right now i believe that would be fine. May be a rule change coming at some point so i wouldnt go too crazy.
Ultimately i tell everyone to just shoot open if your enjoying the sport.
Airguns are the wild west right now, meet the basic rules and its good to go.
What's the theory of why it works?
Its creating a smaller area of the pin that strikes the cartridge which can improve the consistency of the ignition
Smaller area= deeper penetration. How much smaller and deeper for more consistent ignition is million dollar question. @@PursuitofAccuracy
@@cz503 thats what she said 🤣🤣🤣
Sorry couldnt help myself
@@cz503 i think reducing it to only just what contacts the case. Even slightly inboard of the case is ideal
100X. My 455 build is may be 8 years old. The pin work wasn't optional by that time - the gunsmith highly recommended it . If you want we can send you pictures to you and you can share different profiles in your channel. Have brand new pin coming strait from CZ factory next week. @@PursuitofAccuracy