6mm pp[c
- Thread starter maddysdad
- Start date
Larry Koch
Silver $$ Contributor
You left out a lot of information for someone to help.
jackieschmidt
Gold $$ Contributor
In the World of Competitive Benchrest, you will often hear terms such as, “lower, middle, and upper load window”.
The lower load window with 68 grn bullets and 133 is usually in the 27.5 to 28.5 range, the middle load window from 28.5 to 29.5, the upper above 29.5.
Most shooters will choose a load window that they feel gives them the best agging capability.
Velocity is a secondary consideration.
Some very good and well known IBS group shooters that I know and talk to are running anywhere between 30.0 to 30.5 and are getting 34-3500 fps.
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Very well put Jackie. Especially the last sentence.
Tim Singleton
Gold $$ Contributor
a good range to test each range trip is between
3350 and 3500
Not often does the same load work on different days
3350 and 3500
Not often does the same load work on different days
It can. I have probably 12 different lot numbers of 133 and the biggest variation in the lots that I have chronographed was 75FPS. A friend of mine sold me about 7 pounds out of an 8 lb jug because that 2015 lot of powder that he was using in his PPC, well you couldn't put enough in the case to get it too work. I shot it in my 30x47 and it produced the highest velocity of any lot of 133 that I own. With that 30x47 I started out using 43.5 and was getting 3225 with a 112 with a 2001 lot of powder. When I ran out I tried both a 96 & 97 vintage and I had to use a half grain more at 44 to equal that 3225FPS.
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You will find being in the higher load window of 30.0 plus your rifle will be easier to tune and keep in tune. Usually just a few tenths either way your back in the game
30.2-30.7 where I like to stay with 68 gr bt
30.2-30.7 where I like to stay with 68 gr bt
Shooter13
Gold $$ Contributor
At these speeds are they greatly diminishing the life of the brass? Inquiring minds want to know!
Tim Singleton
Gold $$ Contributor
I’ve got one set of 50 pieces I’ve been shooting for 2 years practice and all. Hate to know how many shots are on them .0114 thick necks
primer pockets are a little looose but primers don’t fall out yet
i would add the necks go before primer pockets if you don’t anneal
assuming a good sizing die fit
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I wanna send them them down range with there ass on fire ! After what you spend to go and compete brass is a consumable. I wanna shoot small dots every round. If it comes at a cost of only 15-20 shots per piece if brass so be it.
Frankie. Brass cases are like barrels. Expendable. Why do you think groupers go thru so many barrels. They are not shooting a 30BR. Brass is cheap compared to barrels. My friend who shoots group tells me that he only can afford 4 barrels a year. he said to me I know guys who'll buy 20 to 25 barrels a year. This game isn't cheap and the top shooters don't care what they spend to try to get that extra edge over their fellow competitors.
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Shooter13
Gold $$ Contributor
I not to concerned about the cost of the brass, problem now is finding brass!!
Tim Singleton
Gold $$ Contributor
Your funny Tim. I only have about half of what u said.
Bullet Central still has some. It was available almost anywhere not too long ago but I see it's out of stock at most places. But you have to jump on it while it's available and that's something that a lot of people fail to do because they think the price is too much and they have this delusional thought that once the manufactures get caught up they insist the price will come down which is bullshit. They'll give you this economic lesson that it's supply and demand. If it was gasoline then yes, but I guarantee that your not going to see prices of components go down and if those people with that supply and demand logic BS is concerned they are as Archie Bunker told Edith they are nothing but a bunch of dreamy eyed screwballs. Case closed.
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Shooter13
Gold $$ Contributor
LOL I agree, ordered some, thanks for the heads up, sometimes I search so many places I forget where I searched!!
BoydAllen
Gold $$ Contributor
I don't know about others results, but a friend who tests a lot has two different lots of 133, one that is several years old and a second that is very recent. The older lot gives velocities per weight that are consistent with my experience (and the posts in this thread), given that all of my 133 is older lots, BUT his recent lot takes about a grain less to make the same velocity. The charge weight required to hit a given velocity is about the same as his LT32. The new stuff is also denser than the old. I mention this because I believe that far too many shooter who read forums may try to get by without doing a full charge range load workup.
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