Berger 7mm bullets

[M99]

I've been using Berger Hybrids in F-Open for a few years. I recently measured a single box of 500 bullets of their 7mm 190's. Their overall length varied by up to .018 bullet to bullet. With a variation that great, I don't see how I can use them at all in 1K matches. With the 184's, I found .008 variation. What's going on with Berger? They used to have the go too bullets for competition shooting.

 

[David Christian]

Curious if you saw a difference on target at 1,000 yards. I would shoot the extremes against each other and see what happens.

I happen to sort my bullets by OAL then tip them. Again, I would shoot the extremes and see what the target tells me.

 

[fkimble@charter.net]

How did their bearing surface compare?

Frank

 

[Mastershot]

Weight them and you should be able to sort them out.

 

[whatwind?]

They are pointed at the factory which probably doesn’t sort them to the thou before doing so, sort them for OAL and pray , most likely they will shoot good and then you will get a couple flyers and repeat until you move on

I suggest shooting them at 600 yards also for comps

 

[mgunderson]

Have you already convinced yourself they won't shoot? Come shoot with a sling. Our low bc seem to be more tolerant to changes like this.

 

[barefooter56]

M99,
The only two dimensions we track IN A LOT OF BULLETS ARE THE BULLET BASE TO OGIVE AND THE WEIGHT. We do not track bullet OAL variance on any of our target bullets.
The 7mm 190 Grain LRHT boasts a high BC, jump-tolerant hybrid ogive profile that is Doppler Radar verified with less than 1% BC variation. A high Ballistic Coefficient is important for competitive shooting, but shot-to-shot consistency is the most critical aspect when engaging targets out to 1,000 yards and beyond.

Utilizing advanced and proprietary manufacturing processes, Berger’s innovative Meplat Reduction Technology (MRT) applies controlled pressure along the nose of each LRHT Rifle Bullet, producing a homogeneous and repeatable profile for the industry’s most consistent Ballistic Coefficients (BC).

 

[Fuj]

M99,
The only two dimensions we track IN A LOT OF BULLETS ARE THE BULLET BASE TO OGIVE AND THE WEIGHT.

For inspection purposes, what tolerance is used for pass / fail
within a lot ?? I sorted 100 7mm 140gr Hunters and was very
disappointed compared to the older 130gr Sierras I have been
shooting, but no longer made. Weight was one of the best I've
seen, but base to ogive though was a .008" spread and not really
favoring any one pile. These were PN-28503.....LN-P01471. There
looks to be a hand written "80" in blue ink in the lot number box.
Sure wish these bullets were a more tangent ogive and shorter.

 

[M99]

How did their bearing surface compare?

Frank

Bearing surfaces are very close to the same across the lot. Only the OAL of the bullets seem to vary so much. Even the weights are very accurate. It seems to be how they are drawn and probably on more than one machine. I typically am finding three different OAL length groups ina box.

 

[M99]

M99,
The only two dimensions we track IN A LOT OF BULLETS ARE THE BULLET BASE TO OGIVE AND THE WEIGHT. We do not track bullet OAL variance on any of our target bullets.
The 7mm 190 Grain LRHT boasts a high BC, jump-tolerant hybrid ogive profile that is Doppler Radar verified with less than 1% BC variation. A high Ballistic Coefficient is important for competitive shooting, but shot-to-shot consistency is the most critical aspect when engaging targets out to 1,000 yards and beyond.

Utilizing advanced and proprietary manufacturing processes, Berger’s innovative Meplat Reduction Technology (MRT) applies controlled pressure along the nose of each LRHT Rifle Bullet, producing a homogeneous and repeatable profile for the industry’s most consistent Ballistic Coefficients (BC).

Thank you for that explanation. It clears up a lot. With F-Open, we usually win or lose matches on X-Count today, so every tiny change matters to us a great deal. The reason I started testing the 190's versus the 180's I was using and pointing myself, was to get that higher BC to help a bit with wind calls.

 

[EdHarley]

M99,
The only two dimensions we track IN A LOT OF BULLETS ARE THE BULLET BASE TO OGIVE AND THE WEIGHT. We do not track bullet OAL variance on any of our target bullets.
The 7mm 190 Grain LRHT boasts a high BC, jump-tolerant hybrid ogive profile that is Doppler Radar verified with less than 1% BC variation. A high Ballistic Coefficient is important for competitive shooting, but shot-to-shot consistency is the most critical aspect when engaging targets out to 1,000 yards and beyond.

Utilizing advanced and proprietary manufacturing processes, Berger’s innovative Meplat Reduction Technology (MRT) applies controlled pressure along the nose of each LRHT Rifle Bullet, producing a homogeneous and repeatable profile for the industry’s most consistent Ballistic Coefficients (BC).

So do you recommend sorting a box of Berger 190s or 180s by Base to Ogive and Weight or not at all given you track them? I am asking about shooting at 1000yds for reference.

 

[barefooter56]

For inspection purposes, what tolerance is used for pass / fail
within a lot ?? I sorted 100 7mm 140gr Hunters and was very
disappointed compared to the older 130gr Sierras I have been
shooting, but no longer made. Weight was one of the best I've
seen, but base to ogive though was a .008" spread and not really
favoring any one pile. These were PN-28503.....LN-P01471. There
looks to be a hand written "80" in blue ink in the lot number box.
Sure wish these bullets were a more tangent ogive and shorter.

If these are the 140gr ELITE HUNTER HYBRID BULLETS. Your base to ogive measurements can be affected due to its being a HYBRID DESIGN and the difficulty in actually being on the ogive of the bullet. We have to use specialized equipment to check this as optical comparators even have an issue in getting this done. In regard to the specs you want. Here it is :

• 120 gr to 210 gr: 0.005 ES

 

[barefooter56]

So do you recommend sorting a box of Berger 190s or 180s by Base to Ogive and Weight or not at all given you track them? I am asking about shooting at 1000yds for reference.

You can if you want. But the only real measurement to check is the CBTO.

 

[EdHarley]

You can if you want. But the only real measurement to check is the CBTO.

Excellent, thank you.