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New Lapua 144gn 6.5mm MaxRange Target OTM Bullet GB582

Laurie

Lapua has just announced a new model (new type designation even) 6.5 match bullet with a very high claimed g7 BC value of 0.335. If I haven't fouled my arithmetic up somewhere, that's a g7 'form factor' of 0.881 placing it in the tiny elite low-drag group of modern designs with form factors below 0.9.

https://www.lapua.com/product/6-5-mm-175-gr-maxrange-target-bullet-otm-gb582/

Here's a question or two for the good people at Capstone Precision, specifically @barefooter56.

Phil, I'm sure you're muzzled over this with SHOT only days away and this (plus Lapua's new 7mm PRC case) will no doubt be the company's main feature / the bullet's official worldwide launch, but what is this design's form type, specifically 'Hybrid' or what? Is this a one-off or the first of a multi-calibre range of super-BC Lapua 'MaxRange Target OTMs'?

No doubt, it'll be interesting too to learn in due course whether it is an in-house Finnish design as with existing Scenars, or whether Nammo Lapua Oy drew on its US resources for this model.
 
Based on the BC and form factor, I'd say its likely a hybrid type ogive. Pure secant VLD type bullets usually have a slightly lower BC. It'll be interesting to see how close the advertised BC is to actual. I've always liked the 139 scenar for its consistency and ease of tune, even though it's BC isn't great.
 
Steve Donlon said:
I have a question, My rifles like Berger Full Bore bullets and don't seem to shoot the OTM bullets as good. What is the difference?
Click to expand...

Semantics. OTM = Open Tip Match which is no different other than name from the long-established Hollow Point Match name (without a boat-tail form normally as with one it becomes HPBT or HPBTM).

If you are referring to Bergers, there are two classifications used in the bullet names. First, use (Target, Tactical, or Hunting), then form/shape (VLD BT, Hybrid, Fullbore). The 'Fullbore' models are BTs but with weights to suit the Fullbore disciplines' bullet-weight rules, so 155.5gn for 308 and 80.5gn for 224.

Berger only uses the 'OTM' label in its 'Tactical' range of bullets, although all of its 'Target' and 'Fullbore' bullet designs are also by definition OTMs. This moniker has arisen in recent years with the US military adopting the 0.308" 175gn HPBTM Sierra MatchKing model in 7.62 sniper/SDM ammunition, 190gn SMK in .300 Win Mag, and the 0.224" 77gn HPBTM Sierra MatchKing in 5.56mm equivalents (and no doubt equivalents in other calibres it is playing with). It seems that because HP / Hollow Point is often associated with expanding bullets which are specifically banned under the Hague Convention on rules of war, the US military took fright at the Sierra MKs' traditional description and invented a new one, the 'OTM' or Open Tip Match.

Lapua has used the 'OTM' description for several years for its existing match designs such as the 'Scenar' and 'Scenar-L' ranges, so the 'OTM' description for this new model is in line with its existing marketing and product naming policies.
 
Laurie said:
Semantics. OTM = Open Tip Match which is no different other than name from the long-established Hollow Point Match name (without a boat-tail form normally as with one it becomes HPBT or HPBTM).

If you are referring to Bergers, there are two classifications used in the bullet names. First, use (Target, Tactical, or Hunting), then form/shape (VLD BT, Hybrid, Fullbore). The 'Fullbore' models are BTs but with weights to suit the Fullbore disciplines' bullet-weight rules, so 155.5gn for 308 and 80.5gn for 224.

Berger only uses the 'OTM' label in its 'Tactical' range of bullets, although all of its 'Target' and 'Fullbore' bullet designs are also by definition OTMs. This moniker has arisen in recent years with the US military adopting the 0.308" 175gn HPBTM Sierra MatchKing model in 7.62 sniper/SDM ammunition, 190gn SMK in .300 Win Mag, and the 0.224" 77gn HPBTM Sierra MatchKing in 5.56mm equivalents (and no doubt equivalents in other calibres it is playing with). It seems that because HP / Hollow Point is often associated with expanding bullets which are specifically banned under the Hague Convention on rules of war, the US military took fright at the Sierra MKs' traditional description and invented a new one, the 'OTM' or Open Tip Match.

Lapua has used the 'OTM' description for several years for its existing match designs such as the 'Scenar' and 'Scenar-L' ranges, so the 'OTM' description for this new model is in line with its existing marketing and product naming policies.
Click to expand...
Thank you sir. Trying to cover more bases. They do seem more like a Sierra MK bullet with a thicker jacket than a Full Bore. I did not know about the bullet weight rules for competition. As for the military, what ever it takes.
 
Laurie said:
Semantics. OTM = Open Tip Match which is no different other than name from the long-established Hollow Point Match name (without a boat-tail form normally as with one it becomes HPBT or HPBTM).

If you are referring to Bergers, there are two classifications used in the bullet names. First, use (Target, Tactical, or Hunting), then form/shape (VLD BT, Hybrid, Fullbore). The 'Fullbore' models are BTs but with weights to suit the Fullbore disciplines' bullet-weight rules, so 155.5gn for 308 and 80.5gn for 224.

Berger only uses the 'OTM' label in its 'Tactical' range of bullets, although all of its 'Target' and 'Fullbore' bullet designs are also by definition OTMs. This moniker has arisen in recent years with the US military adopting the 0.308" 175gn HPBTM Sierra MatchKing model in 7.62 sniper/SDM ammunition, 190gn SMK in .300 Win Mag, and the 0.224" 77gn HPBTM Sierra MatchKing in 5.56mm equivalents (and no doubt equivalents in other calibres it is playing with). It seems that because HP / Hollow Point is often associated with expanding bullets which are specifically banned under the Hague Convention on rules of war, the US military took fright at the Sierra MKs' traditional description and invented a new one, the 'OTM' or Open Tip Match.

Lapua has used the 'OTM' description for several years for its existing match designs such as the 'Scenar' and 'Scenar-L' ranges, so the 'OTM' description for this new model is in line with its existing marketing and product naming policies.
Click to expand...
Laurie,
Both the OTM , full-bore, and BT TARGET bullets are TANGENT OGIVE designs. The only exception is the 6.5 130 grain OTM bullet which is a HYBRID bullet design along the lines of our CLASSIC HUNTER bullets that have a SAAMI bullet nose length for a bullet designed to be loaded to MAGAZINE LENGTH. Both of these designs are very tolerant of jump in most cases. In regard to the OTM moniker. Laurie is right... semantics to please the JAGs that have no idea THAT THE HOLLOWPOINT on a target round is there for accuracy only and not expansion. So OTM replaced hollow point to please the legal " word Faries".
 
I think barrel twist rate makes these a no go for me, at this time. But i sure wish it were possible.
 
ebb said:
I think barrel twist rate makes these a no go for me, at this time. But i sure wish it were possible.
Click to expand...

Ebb,

Where are you finding info on twist rate? I looked on the Lapua website, but I didn't find anything about twist rate or bullet length.

My barrels are 1:8. They stabilize the berger 140 hybrids and Lapua 139 Scenars with no issues.
 
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