245 berger bullets

richhymas

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I’ve been wanting to try them out of my norma but my twist is 9.5 and they recommend 9. So far it’s pushing the 215’s upwards of 3200 without pressure so I should hopefully be able to keep the 245’s in the 2950-3000 range
I bet you get over 3000
 

matt_3479

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So ladder tests today showed 92grs-96.5grs of powder

92- 3129, 3073, 3065
92.5- 3072, 3066, 3065
93- 3084, 3089, 3079
93.5- 3100, 3102, 3090
94- 3110, 3118, 3109
94.5- 3141, 3150,3129
95- 3153, 3153, 3125
95.5- 3173, 3185, 3150
96- 3170, 3182, 3189
96.5- 3187, 3191, 3193

still no major pressures what so ever!

looks to be a node from 92grs-93grs then another at 96-96.5.

I had a few made up at 92.5 from early and 10 rounds gave me an SD of 7.5 and avg vel 3096 and 10rods at 95gave me sd of 8.9 and an average vel of 3174fps. (I had exactly 20 bullets left and 20 primers after ladders were loaded that’s why I made the 2 10 round geoups).

id say I could shoot 97-97.5 comfortably putting me in the 3200-3240fps range. I think I’m going load up 92.5 and test seating depth and 96.2 and do the same.

AC9784E7-AA20-4184-AFBC-2C8D187012C9.png
81D6FA24-8252-4CFB-8437-29DB22E009DA.jpeg
 

matt_3479

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1 one ladder was from 3 days ago ( was also sight in hence the 3 shot final)
Today was 2 ladders at 300 yards which is the furthest my home range has. I wrote down all 3 ladders to compare. Will load up those two charges I mentioned and test at 300, then hopefully take her out to 600-800 and 1000 in the coming weeks
 

Canadian Bushman

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.007 higher but is 15 grains heavier should have a higher bc then it does for the added weight that a loss of at least 125 fps from weight diffrence
You cant take the highest number of a stepped BC and compare it to another mfg’s average BC. Thats not accurate.

Also G7 is a way better representation of these newer bullet profiles and bullet comparison is one of many reasons why this number should be used.

Also the newer matchkings are pointed, increasing the BC over non pointed bullets and drastically reducing the chance the bullet will expand. Not a great idea for long range hunting bullet. This is why sierra strictly recommends this bullet for target.
 

kaseyfied

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I thought the whole idea behind bullet pointing was to help expansion... if that's not the case why are people paying 500 bucks for bullet pointing kitsch for the berger bullets

Kasey
 

Canadian Bushman

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To increase BC and reduce bullet to bullet variation.
No, the bigger and deeper the hollow point the faster and more violent the expansion. Pointing hurts expansion.
 

TwistedFox

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You cant take the highest number of a stepped BC and compare it to another mfg’s average BC. Thats not accurate.

Also G7 is a way better representation of these newer bullet profiles and bullet comparison is one of many reasons why this number should be used.

Also the newer matchkings are pointed, increasing the BC over non pointed bullets and drastically reducing the chance the bullet will expand. Not a great idea for long range hunting bullet. This is why sierra strictly recommends this bullet for target.
And berger recommends not using target vld bullets for hunting as well never the less i use them with dirt dead results one shot kills g1 g7 same bullet the numbers are a results of math its the g7 program that is more applicable apposed to the g1 program g7 is a results on multiplying g1 factor by 513 . Do the math
 

kaseyfied

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To increase BC and reduce bullet to bullet variation.
No, the bigger and deeper the hollow point the faster and more violent the expansion. Pointing hurts expansion.
Dont get why people are doing it then.. seems not correct but I know nothing.. I just shoot em and pick up my meet on the other hillside lol

Kasey
 

Canadian Bushman

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And berger recommends not using target vld bullets for hunting as well never the less i use them with dirt dead results one shot kills g1 g7 same bullet the nubbwrs are a results of math its the g7 program that is more applicable apposed to the g1 program g7 is a results on multiplying g1 factor by 513 . Do the math
Berger most certainly does. Some dont work very well for hunting and some do. They explain this quite thoroughly.

It is math, but it is certainly not just that simple. G1’s and G7’s are entirely different models. This is why Sierra must use stepped G1’s to accurately represent their long nosed boat tail bullet. It is so different from the G1 model, its trajectory cant be accurately predicted with a single G1 BC. Stepped G1’s are a poor substitution.

This is why G7’s came about.

There is no “program.” There are models. BC’s are how your bullet corresponds to “the” model.



 
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Canadian Bushman

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Dont get why people are doing it then.. seems not correct but I know nothing.. I just shoot em and pick up my meet on the other hillside lol

Kasey
In not clear on your question.

Why are people tipping bullets?

The meplat or tip of a bullet is a major component of drag. Hollow point bullets often have meplats of varying diameter and shape. By reducing this single element it reduces its contribution to the bullets overall drag.

This can help bring the overall drag of you bullets closer together and result in smaller groups at long range. An important consideration for long range competition shooters.

You can still kill things with bullets that dont expand. You cant be off by near as much. A 10” wound cavity allows for a bit more error than a 5” wound cavity.

This is why most long range hunters dont use tipping dies on their bullets. In fact many, like i do, use some sort of tool to make sure the hollow point is clear of any obstruction and of equal depth to the other bullets.
 

TwistedFox

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Berger most certainly does. Some dont work very well for hunting and some do. They explain this quite thoroughly.

It is math, but it is certainly not just that simple. G1’s and G7’s are entirely different models. This is why Sierra must use stepped G1’s to accurately represent their long nosed boat tail bullet. It is so different from the G1 model, its trajectory cant be accurately predicted with a single G1 BC. Stepped G1’s are a poor substitution.

This is why G7’s came about.

There is no “program.” There are models. BC’s are how your bullet corresponds to “the” model.



Its clearly obvious you did not understand my comments the g7 #s are derived from the g1 #s its the math of
g7 program that makes it more consistant at distance it has nothing to do with the bc #s as thay are just smoke and mirror #s here is a perfect example berger 6.5
140 vld berger has it listed as.593 g1 multiply .593x513 =304.2 berger shows a g7 of .304. Berger 6.5 156 grain bullet having a g1 of .679. .679x513=.348 berger shows .347 g7. 308 cal 210 vld berger shows g1 of .625 .625x513=320.6 berger shows .320 7mm 180 vld betger shows a g1 bc of .673 .673x513= 345.2 berger shows .345. So reguardless of what manufactor uses g1 as long as their g1 is correct you can calculate to get the g7 so you can run a g7 program. My question is why not just make all programs for boat tail bullets use the g7 math to calculate trajectory its all smoke and mirrors
 

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