What is the difference in grains??
- Thread starter Pantharen
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No sir, in this case (no pun) grain, or gr, is the bullet weight.
Just to add; in modern ammo "grain" or "gr" is a measurement of weight. Both powder and bullets are measured in grains.
eg: a .308 round may have a 168gr bullet sitting on 44.0gr of ### brand powder.
7000gr = 1lb
Just to add; in modern ammo "grain" or "gr" is a measurement of weight. Both powder and bullets are measured in grains.
eg: a .308 round may have a 168gr bullet sitting on 44.0gr of ### brand powder.
7000gr = 1lb
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It's an old unit of measurement, based on the weight of one grain of barley. 7000 grains in one pound.
However, the amount of powder is also measured in grains, which is very important since it becomes a nightmare trying to measure using other units of measurement and you end up having to use fractions of a gram or something. However, I don't think most people know anything about measuring the size of a granule, or pellet or flakes or whatever they are called, of powder. Too many types are way too different, and variations are not really going to matter unless you drastically change the composition of the powder by crushing it into dust or something.
Are you sure it's 15.43?
7000(grains per pound)/454(grams per pound)=15.41850220264317 according to my iphone calculator. That should mean 1 gram is equal to ~15.42 grains. Right? Math class was a depressingly long time ago.
However, the amount of powder is also measured in grains, which is very important since it becomes a nightmare trying to measure using other units of measurement and you end up having to use fractions of a gram or something. However, I don't think most people know anything about measuring the size of a granule, or pellet or flakes or whatever they are called, of powder. Too many types are way too different, and variations are not really going to matter unless you drastically change the composition of the powder by crushing it into dust or something.
Are you sure it's 15.43?
7000(grains per pound)/454(grams per pound)=15.41850220264317 according to my iphone calculator. That should mean 1 gram is equal to ~15.42 grains. Right? Math class was a depressingly long time ago.
1+1 = not enough guns
Not always. Some have lighter bullets have even lighter chargers like the .22 CB long 29 gr @ 700 fps designed to be super quiet like a pellet gun. Some are hyper velocity like the .22 Stingers 32 gr @ 1640 fps.
Grains~reloading precision centerfire rounds has really been an eye-opener for me, but to the question..it's referring to bullet weight. Don't assume that lighter means faster (unlike two airgun pellets of differing weights through the same gun) since manufacturers alter powder charges depending on application~as others have pointed out. You're better off looking at the velocity indicated on the box (or online). If one 40gr. .22lr round shoots allot faster than another 40gr. .22lr round, it's safe to say that there is more powder, a different powder~or both.
Bullet weight, as others are busy hashing out the conversions for.
Typically you get told what the bullet weight is, and how fast it supposedly goes (which is only really a sorta reference point, as they use their gun to test it, and you shoot it in a different one).
The commercial ammo makers do not normally use the same powders that are available to reloaders, so telling you how many grains of powder are in it would not do you any good at all.
To add to the confusion, some cartridge designations (their 'name'), refer to the amount of Black Powder they would have supposedly contained, such as the 45-70 (.45 caliber, 70 grains of black powder), also 45-90, 45-100, 45-110, etc. Supposedly, because the way cartridge cases were made is different than they are now, so the capacity is less. Trying to stuff 70 grains of Black Powder into a 45-70 case is a bit of a fight, without using a balloon head case!
There are almost as many exceptions and examples of it being done differently, as there are rules for the English language. It is confusing!
But on a .22 rimfire box, you are seeing the weight of the bullet. Normally!
Cheers
Trev
Bullet weight, as others are busy hashing out the conversions for.
Typically you get told what the bullet weight is, and how fast it supposedly goes (which is only really a sorta reference point, as they use their gun to test it, and you shoot it in a different one).
The commercial ammo makers do not normally use the same powders that are available to reloaders, so telling you how many grains of powder are in it would not do you any good at all.
To add to the confusion, some cartridge designations (their 'name'), refer to the amount of Black Powder they would have supposedly contained, such as the 45-70 (.45 caliber, 70 grains of black powder), also 45-90, 45-100, 45-110, etc. Supposedly, because the way cartridge cases were made is different than they are now, so the capacity is less. Trying to stuff 70 grains of Black Powder into a 45-70 case is a bit of a fight, without using a balloon head case!
There are almost as many exceptions and examples of it being done differently, as there are rules for the English language. It is confusing!
But on a .22 rimfire box, you are seeing the weight of the bullet. Normally!
Cheers
Trev
We are talking rimfire, where there is much less variation in velocity between various rifles. As to the powder type and weight; since we don't reload rimfires, it is not applicable.
can you buy pre-primered brass and load your own .22's
There are several centerfire .22 rounds that are definitely reloadable, but nothing for rimfire.
I'm sure it COULD be done, if a manufacturer ever decided to give it a shot... But with no reloading supplies, equipment or data available for the task, not to mention no profit margin at all, I really don't see it ever happening.
I was kind of thinking that it wouldn't be cost effective, seeing as I can get 1400 rounds for $85 inc tax. which works out to about .20c each round.
But when I was a kid we use to steal my BF's dad gun powder and do stupid things with it.. He use to reload all his own shells, and he had a bunch of pre-primed rimfire, cause we took some once.. (I never said we were smart kids), now to age myself, that was back in the early to mid 80's
There is variation enough. But for the most part, it just gives a baseline to compare between so called High Velocity, and Standard Velocity, etc. loads. I have never heard of anyone getting their money back because theirs didn't shoot exactly the velocity listed on the box, have you?
I have seen it listed for sale, Stateside, and have seen several posts on different forums referring to it being available (usually in minimum qty's of 5000 per purchase) for the target shooters to load with.
Some guys have done some pretty cool testing with BP .22 rimfire loads and found that their consistency is far and away better than the commercial smokeless loads.
It is (or at least, was) out there, but not very common at all.I've not seen it in person either.
Some guys just pull bullets and start from there. There are at least a couple wildcats based on necked down .22 LR cases too. Lotsa fun there, eh, resizing a live primer'ed case!
Many of the target shooting assn's have rules that disallow reloaded rimfire ammo due to the lack of availability and the associate risks. But some guys like playing around with the stuff.
Cheers
Trev
With rimfire ammo at an all time low in some provinces & states, you would think that reloads would be more common..
