Post by Richard on Aug 5, 2017 20:31:26 GMT -5
make life easier for sabot-less shooting:
I saw where a member was having a problem getting a FTX down the bore of a fouled barrel.
For years I have used mechanical micrometers that yes, read to a ten thousandth (.0000") but getting a good read on that last place can be a bit tedious. With this sabot-less game, a ten thousandth or two can be the difference between going down, not going down or POUNDING down?
If you have a bullet sized so you know it goes down (whether fouled or clean) and can take a GOOD measurement off of it, then you can easily check other bullets ahead of time. You can also check if a bullet has sprung back after sizing and will give you loading difficulty. The key here is an ELECTRONIC micrometer (mic) that will read to FIVE places to the right of the decimal point! About two years ago I finally bit the bullet and bought a decent Mitutoyo mic that read that small. It was $129.00 but if you google mic's you can get electronic ones for well under $100.00. With a mic like this, you can easily tell before hand (when sizing) if the bullet will fall down the bore or seat the way you want it. Mechanical mic's are OK, but just not as convenient or accurate for what we do with bullets. I have gotten my measurement down to .4500 to .4501 or max at .45015" for the fit I need . If the bullet sizes .4502" it will go down but with some effort (which I do not like). Having bullets vary in diameter can be detrimental to the kind of accuracy we are looking for. Sabots allow some leeway in sizing but not so for sabot-less.
My shooting partner Herman has one of the "mechanical digital" el cheapo's from Midway that just does not give you the necessary reading. I brought mine to the range last week to show him and he is now ordering one.
It just makes life easier!
I saw where a member was having a problem getting a FTX down the bore of a fouled barrel.
For years I have used mechanical micrometers that yes, read to a ten thousandth (.0000") but getting a good read on that last place can be a bit tedious. With this sabot-less game, a ten thousandth or two can be the difference between going down, not going down or POUNDING down?
If you have a bullet sized so you know it goes down (whether fouled or clean) and can take a GOOD measurement off of it, then you can easily check other bullets ahead of time. You can also check if a bullet has sprung back after sizing and will give you loading difficulty. The key here is an ELECTRONIC micrometer (mic) that will read to FIVE places to the right of the decimal point! About two years ago I finally bit the bullet and bought a decent Mitutoyo mic that read that small. It was $129.00 but if you google mic's you can get electronic ones for well under $100.00. With a mic like this, you can easily tell before hand (when sizing) if the bullet will fall down the bore or seat the way you want it. Mechanical mic's are OK, but just not as convenient or accurate for what we do with bullets. I have gotten my measurement down to .4500 to .4501 or max at .45015" for the fit I need . If the bullet sizes .4502" it will go down but with some effort (which I do not like). Having bullets vary in diameter can be detrimental to the kind of accuracy we are looking for. Sabots allow some leeway in sizing but not so for sabot-less.
My shooting partner Herman has one of the "mechanical digital" el cheapo's from Midway that just does not give you the necessary reading. I brought mine to the range last week to show him and he is now ordering one.
It just makes life easier!
I have recovered bullets and observed the rifling impressions (if the jacket is soft/thin enough and the load is right) on smooth sized bullets and gotten ES's in the single digit's to know they are properly rotating and sealing that full forming is not necessary . I understand with some of the sub calibers that full forming is necessary but so far, I don't see this with the right .45 bullets? That is my experience and opinion....your mileage may differ? 