This is about the 4th video I have watched on this topic and you are the first person to explain how much you want to set it back and why. Thanks! Clear and concise explanation. Nice video!
Your explanation with walk through was really good. A lot of people just talk through the process and it doesn't make sense for newer reloaders. Well done!
Good explanation, and I will offer these two comments: Wipe the lube off the case before inserting it into the comparator, else it may build up and give false readings. Also, decap the cases before measuring them, by using a universal decapping die (decap without sizing). The primer may protrude from the case a bit, and give a false length reading.
@@PoliticallyInsensitive Depends on the case. I use a universal decapping die that doesn't touch the sides. I hate to admit, but I've also used a long slim punch to knock the primer out.
I have encountered soft strikes and misfires. I followed this video and the starting point was an average headspace for the batch, then bumping back .003” . I failed to check if this value was within SAMMI headspace specs. They were not which resulted in misfires and soft strikes….. i now just resize to a median SAMMI headspace value.
Your video caught my attention! A few months ago I tried to go the precision reloading thing with the shoulder bump, comparator set, rcbs precision MIC , Eric Cortina thing---but nothing really stuck because to me there were too many variables people were not mentioning. YOUR video brings me closer but from a different approach. When the ram is UP and it touches the die as you say, this is actually the minimum SAAMI headspace dimension--for me with .308WIN it was 1.6285 (1.63). Out of 50 rounds, I was able to size the cases to around this value, 75% of the time, other times there would be different values....So, the number we start out as you did is not constant....and the 0.002-0.003" bump could be all over the place in the general scheme of things.... I am using all the same equipment as you video. So.....according to RCBS, once the ram touches the die, you give it another qtr turn....I think that would put us well below the SAAMI HS dimension.This is so confusing to me.... but your videos brings me much close...good work man!
Yes, there are so many variables that it is very hard to absorb everything. So, SAAMI specs are what every manufacturer is supposed to follow when building a production rifle so that it can safely accept all SAAMI spec ammo. But most rifles have looser tolerances than that, so their accuracy potential can't be fully reached loading to SAMMI specs. That is why fireformed brass is so special. With that brass, you now have a near perfect measurement of your rifle chamber. I say near perfect because there does seem to be an anomaly from time to time that could be caused by a variety of different reasons. So now you know that that brass came out of your chamber, so it will go back in with some force. So, with the headspace comparator, you are just trying to set it back just enough to have neck tension for bullet and get it as close to size of rifle chamber without causing feeding issues, which is typically somewhere between 0.002 to 0.003 from fireformed brass for bolt action rifles and 0.0035 to 0.005 from fireformed brass for semi auto rifles. Hope that helps simplify that
You explained and demonstrated the process well. Thank you.
Undoubtedly the most helpful and easiest to understand video to explain this thus far. Being a newbie people seem to make it difficult. Thank You!
I appreciate that happy reloading
This is about the 4th video I have watched on this topic and you are the first person to explain how much you want to set it back and why. Thanks! Clear and concise explanation. Nice video!
Thank you I appreciate that 🙏
Your explanation with walk through was really good. A lot of people just talk through the process and it doesn't make sense for newer reloaders. Well done!
Good explanation, and I will offer these two comments: Wipe the lube off the case before inserting it into the comparator, else it may build up and give false readings. Also, decap the cases before measuring them, by using a universal decapping die (decap without sizing). The primer may protrude from the case a bit, and give a false length reading.
Can you also adjust the decapping pin down and leave the die itself high to avoid resizing when decapping for this?
@@PoliticallyInsensitive Depends on the case. I use a universal decapping die that doesn't touch the sides. I hate to admit, but I've also used a long slim punch to knock the primer out.
Nice video Mate. Helped me out... Thanks
I have encountered soft strikes and misfires. I followed this video and the starting point was an average headspace for the batch, then bumping back .003” . I failed to check if this value was within SAMMI headspace specs. They were not which resulted in misfires and soft strikes….. i now just resize to a median SAMMI headspace value.
so, I will need to keep my brass separated by the rifle I use this method for, correct?
Your video caught my attention! A few months ago I tried to go the precision reloading thing with the shoulder bump, comparator set, rcbs precision MIC , Eric Cortina thing---but nothing really stuck because to me there were too many variables people were not mentioning. YOUR video brings me closer but from a different approach. When the ram is UP and it touches the die as you say, this is actually the minimum SAAMI headspace dimension--for me with .308WIN it was 1.6285 (1.63). Out of 50 rounds, I was able to size the cases to around this value, 75% of the time, other times there would be different values....So, the number we start out as you did is not constant....and the 0.002-0.003" bump could be all over the place in the general scheme of things....
I am using all the same equipment as you video. So.....according to RCBS, once the ram touches the die, you give it another qtr turn....I think that would put us well below the SAAMI HS dimension.This is so confusing to me.... but your videos brings me much close...good work man!
Yes, there are so many variables that it is very hard to absorb everything. So, SAAMI specs are what every manufacturer is supposed to follow when building a production rifle so that it can safely accept all SAAMI spec ammo. But most rifles have looser tolerances than that, so their accuracy potential can't be fully reached loading to SAMMI specs. That is why fireformed brass is so special. With that brass, you now have a near perfect measurement of your rifle chamber. I say near perfect because there does seem to be an anomaly from time to time that could be caused by a variety of different reasons. So now you know that that brass came out of your chamber, so it will go back in with some force. So, with the headspace comparator, you are just trying to set it back just enough to have neck tension for bullet and get it as close to size of rifle chamber without causing feeding issues, which is typically somewhere between 0.002 to 0.003 from fireformed brass for bolt action rifles and 0.0035 to 0.005 from fireformed brass for semi auto rifles. Hope that helps simplify that
And I should note that oftentimes your brass may be outside of SAMMI specs using this method.
@@hinshawshowto ahhh, i think that is what my little brain resists….being outside of SAMMI