Any of you guys use this tool to get your seating depth? I'm having a difficult time getting consistent results in my factory Rem SPS V.
- Thread starter MrBrown
- Start date
Re: RCBS Precision MIc tool
Have about 4 precision Mics.
Never found the bullet seating depth thingy to be worth a damn.
Make up your own dummy load and smoke the bullet with a ligher or paint it and then look for rifling scrapes to know you're in the lands.
Have about 4 precision Mics.
Never found the bullet seating depth thingy to be worth a damn.
Make up your own dummy load and smoke the bullet with a ligher or paint it and then look for rifling scrapes to know you're in the lands.
Re: RCBS Precision MIc tool
I have one also. Not a precision measuring device in my opinion.
I have one also. Not a precision measuring device in my opinion.
Re: RCBS Precision MIc tool
The precision mic is used to measure your case and determin how to set up your die to bump your shoulder back. As for finding seating depth, it's not a good tool for that.
myerfire
The precision mic is used to measure your case and determin how to set up your die to bump your shoulder back. As for finding seating depth, it's not a good tool for that.
myerfire
Re: RCBS Precision MIc tool
The "proper" way to use the precision mic to obtain the ogive position in your chamber (to useful accuracy) is to take a case (fired from that rifle) and partially size only 1/2 the neck. Then seat a bullet (from the lot you intend to use) in the neck very long (0.100 long if you can muster this). Now carefully chamber this round and extract it with exceeding care. Measure the ogive position in your RCBS case micrometer with the 'other' wheel. Repeat until 3 measurements come out within +/- 0.001. Then you know the position of the lands in this rifle for that lot of bullets.
Do not use the plastic bullet supplied or the plastic case supplied. YO can use these but don't trust the measurements--so why bother.
The "proper" way to use the precision mic to obtain the ogive position in your chamber (to useful accuracy) is to take a case (fired from that rifle) and partially size only 1/2 the neck. Then seat a bullet (from the lot you intend to use) in the neck very long (0.100 long if you can muster this). Now carefully chamber this round and extract it with exceeding care. Measure the ogive position in your RCBS case micrometer with the 'other' wheel. Repeat until 3 measurements come out within +/- 0.001. Then you know the position of the lands in this rifle for that lot of bullets.
Do not use the plastic bullet supplied or the plastic case supplied. YO can use these but don't trust the measurements--so why bother.
Re: RCBS Precision MIc tool
Try sinclairintl.com product #59-4000.
Try sinclairintl.com product #59-4000.
Re: RCBS Precision MIc tool
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bignada</div><div class="ubbcode-body">Have about 4 precision Mics.
Never found the bullet seating depth thingy to be worth a damn.
</div></div>
+1. Great for setting up a FL die for the correct case headspace, but suggest you use the Stoney Point/Hornady OAL Gauge for bullet seating purposes.
Don
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bignada</div><div class="ubbcode-body">Have about 4 precision Mics.
Never found the bullet seating depth thingy to be worth a damn.
</div></div>
+1. Great for setting up a FL die for the correct case headspace, but suggest you use the Stoney Point/Hornady OAL Gauge for bullet seating purposes.
Don
Re: RCBS Precision MIc tool
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: MitchAlsup</div><div class="ubbcode-body">The "proper" way to use the precision mic to obtain the ogive position in your chamber (to useful accuracy) is to take a case (fired from that rifle) and partially size only 1/2 the neck. Then seat a bullet (from the lot you intend to use) in the neck very long (0.100 long if you can muster this). Now carefully chamber this round and extract it with exceeding care. Measure the ogive position in your RCBS case micrometer with the 'other' wheel. Repeat until 3 measurements come out within +/- 0.001. Then you know the position of the lands in this rifle for that lot of bullets. </div></div>
This is exactly what I ended up doing...Thanks guys for all the input. -Brown
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: MitchAlsup</div><div class="ubbcode-body">The "proper" way to use the precision mic to obtain the ogive position in your chamber (to useful accuracy) is to take a case (fired from that rifle) and partially size only 1/2 the neck. Then seat a bullet (from the lot you intend to use) in the neck very long (0.100 long if you can muster this). Now carefully chamber this round and extract it with exceeding care. Measure the ogive position in your RCBS case micrometer with the 'other' wheel. Repeat until 3 measurements come out within +/- 0.001. Then you know the position of the lands in this rifle for that lot of bullets. </div></div>
This is exactly what I ended up doing...Thanks guys for all the input. -Brown
Re: RCBS Precision MIc tool
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: USSR</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bignada</div><div class="ubbcode-body">Have about 4 precision Mics.
Never found the bullet seating depth thingy to be worth a damn.
</div></div>
+1. Great for setting up a FL die for the correct case headspace, but suggest you use the Stoney Point/Hornady OAL Gauge for bullet seating purposes.
Don </div></div>
agreed
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: USSR</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bignada</div><div class="ubbcode-body">Have about 4 precision Mics.
Never found the bullet seating depth thingy to be worth a damn.
</div></div>
+1. Great for setting up a FL die for the correct case headspace, but suggest you use the Stoney Point/Hornady OAL Gauge for bullet seating purposes.
Don </div></div>
agreed
Re: RCBS Precision MIc tool
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Fuzzball</div><div class="ubbcode-body"> That lousy 'free-bore' tool, the dummy cartridge, is basically useless, IMHO. </div></div>
yep. chuck that stupid thing as far away as you possibly can.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Fuzzball</div><div class="ubbcode-body"> That lousy 'free-bore' tool, the dummy cartridge, is basically useless, IMHO. </div></div>
yep. chuck that stupid thing as far away as you possibly can.
