I have the Hornady bullet comparator with .30cal insert to measure base to ogive. I do not own their base, but I see a definite need for it. Do you guys feel that you are getting accurate and repeatable measurements without the base? I find I do not. The base of the cartridge walks around the jaws too much. Any insight?
Bullet Comparators with/without base
- Thread starter fenwick253
- Start date
Re: Bullet Comparators with/without base
I have but do not use it. Tried both ways but feel better without. I just move the case around til its flush for my measurement. Nothing is perfect.
I have but do not use it. Tried both ways but feel better without. I just move the case around til its flush for my measurement. Nothing is perfect.
Re: Bullet Comparators with/without base
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: fenwick253</div><div class="ubbcode-body">I have the Hornady bullet comparator with .30cal insert to measure base to ogive. I do not own their base, but I see a definite need for it. Do you guys feel that you are getting accurate and repeatable measurements without the base? I find I do not. The base of the cartridge walks around the jaws too much. Any insight? </div></div>
It doesn't really matter as long as you measure cases the same way each time. It's not the absolute measurement that is important so much as relative change using consistent method.
HTH!
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: fenwick253</div><div class="ubbcode-body">I have the Hornady bullet comparator with .30cal insert to measure base to ogive. I do not own their base, but I see a definite need for it. Do you guys feel that you are getting accurate and repeatable measurements without the base? I find I do not. The base of the cartridge walks around the jaws too much. Any insight? </div></div>
It doesn't really matter as long as you measure cases the same way each time. It's not the absolute measurement that is important so much as relative change using consistent method.
HTH!
Re: Bullet Comparators with/without base
sounds good. I align the comparator on the centerline of the jaws and set the base in the center of the traveling jaw. I'll try to see if I can get more repeatable measurements since COAL varies from Base to Ogive.
sounds good. I align the comparator on the centerline of the jaws and set the base in the center of the traveling jaw. I'll try to see if I can get more repeatable measurements since COAL varies from Base to Ogive.
Re: Bullet Comparators with/without base
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: fenwick253</div><div class="ubbcode-body">I have the Hornady bullet comparator with .30cal insert to measure base to ogive. I do not own their base, but I see a definite need for it. Do you guys feel that you are getting accurate and repeatable measurements without the base? I find I do not. The base of the cartridge walks around the jaws too much. Any insight? </div></div>
I have a couple of bases that I use with the headspace bushings and the comparator inserts.
I put a witness mark on the bodies and then put a witness mark on the inserts and align them up before locking them down.
Each time they're inserted at the same spot in the body.
OCD and all.
EDIT:
I misunderstood.
Stoney Point used to make the 'anvil' that I think is what you're referring to.
I don't get much movement, but when we're talking about ~.001", we're not talking about a lot that needs to happen, to move the needle.
Chris
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: fenwick253</div><div class="ubbcode-body">I have the Hornady bullet comparator with .30cal insert to measure base to ogive. I do not own their base, but I see a definite need for it. Do you guys feel that you are getting accurate and repeatable measurements without the base? I find I do not. The base of the cartridge walks around the jaws too much. Any insight? </div></div>
I have a couple of bases that I use with the headspace bushings and the comparator inserts.
I put a witness mark on the bodies and then put a witness mark on the inserts and align them up before locking them down.
Each time they're inserted at the same spot in the body.
OCD and all.
EDIT:
I misunderstood.
Stoney Point used to make the 'anvil' that I think is what you're referring to.
I don't get much movement, but when we're talking about ~.001", we're not talking about a lot that needs to happen, to move the needle.
Chris
Re: Bullet Comparators with/without base
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ChrisGarrett</div><div class="ubbcode-body">Stoney Point used to make the 'anvil' that I think is what you're referring to.
I don't get much movement, but when we're talking about ~.001", we're not talking about a lot that needs to happen, to move the needle.
Chris</div></div>
1/1000 isn't more than a little pressure on the calipers. I've been measuring from the same place on the base and it seems to be working fine. I guess i was thinking that having a base that was aligned on center with the comparator would give more consistent readings.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Sledge1</div><div class="ubbcode-body">Try a Davidson seating depth checker.</div></div>
does the Davidson align with the case within the clamp-on piece?.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ChrisGarrett</div><div class="ubbcode-body">Stoney Point used to make the 'anvil' that I think is what you're referring to.
I don't get much movement, but when we're talking about ~.001", we're not talking about a lot that needs to happen, to move the needle.
Chris</div></div>
1/1000 isn't more than a little pressure on the calipers. I've been measuring from the same place on the base and it seems to be working fine. I guess i was thinking that having a base that was aligned on center with the comparator would give more consistent readings.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Sledge1</div><div class="ubbcode-body">Try a Davidson seating depth checker.</div></div>
does the Davidson align with the case within the clamp-on piece?.
Re: Bullet Comparators with/without base
Yes. The base has a recess in it to help align the other end when attaching it to your calipers. The case head will also fit into this recess and align the bullet with the other end.
With that being said, I'm not sure that all this is necessary, but if it makes you feel better...
Yes. The base has a recess in it to help align the other end when attaching it to your calipers. The case head will also fit into this recess and align the bullet with the other end.
With that being said, I'm not sure that all this is necessary, but if it makes you feel better...
Re: Bullet Comparators with/without base
Yeah Sledge, its a good idea, but like you said not sure it's totally necessary. I'll do myself a favor and spend the $18 on a steak dinner.
Yeah Sledge, its a good idea, but like you said not sure it's totally necessary. I'll do myself a favor and spend the $18 on a steak dinner.
