Accurise

Accurise has evolved! We are now merged with Magnum Sports and will continue with our exclusive products under the Magnum banner.

Thank you to all our customers over the years who have chosen Accurise, we truly appreciate your business and hope that you will look us up at Magnum Sports.

https://magnumsports.com.au

Great upgrade for your Bulletseeker and Speedtracker App!

https://youtu.be/8tnTYE0b3J4?si=fkLRzoUuStPCnIBW

Understanding Muzzle Velocity Muzzle velocity is an important variable for long range shooters. This video covers some key concepts for beginners and also goes into some advanced topics ...

Bullet pointing for FTR competition; is it worth it?

This is a very common question I've gotten over the years. The answer is in terms of BC increase, and BC uniformity. Modern Advancements in Long Range Shooting - Volume 2 has a chapter dedicated to extensive testing done on .224-.338 caliber bullets to measure the effects of pointing (and trimming) on BC and BC uniformity.

This post answers the question in a different way; in terms of hit % within the 10 ring on the 1000 yard F class target.

A common bullet for FTR is the Berger .308 caliber 200.20X Hybrid. This bullet has a G7 BC of 0.328 out of the box, and is often pushed around 2650 fps in long barreled 308's.

According to our testing, the average BC of this bullet increases about 4% when pointed, and an increase in uniformity of 20% (meaning the BC SD is 20% less for pointed bullets).

Using these parameters, the modeling in the graphic was done assuming a 3 mph wind bracket, 5 fps MV SD, and 0.6 MOA average 5-shot groups at 100 yards.

As it turns out, the hit % on the 10-inch 10-ring is improved from 89% for unmodified bullets, to 91% for the pointed bullets. Roughly 9/10 shots in a 10" circle.

Those are both scores of 198-?x, with the pointed bullets being a little inside. Statistically, that 2% difference should round up to a point every 50 shots.

That may not sound like a lot. However, in a long tournament, the winners are often decided by less than 1 point (x-count). For example, a weekend tournament may be comprised of a 3x1000 on Saturday, and a 2x1000 on Sunday, for a total of 5 matches, 20 shots each, 100 shots total. This analysis predicts that, all else being equal, you should score 2 points higher with pointed bullets than non-pointed, over the 100-shot course of fire.

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Visit the Science of Accuracy Academy for more information: https://thescienceofaccuracy.com/

New AB solver with Speedtracker integration! Only Doppler radar to be integrated so far.

Barnard Model P 308 extractor kits shipping in late October. Limited once off batch- spread the word!

Barnard Extractor Kit: 308 Model P (free shipping) Shipping will commence in week 4 of October 2024 3 piece extractor kit - extractor claw, spring and piston. Brand new manufacture: 4340 steel.

Tubb TMS, Tubb dust, Boron Nitride and Final Finish are the solution!

https://www.accurise.com.au/products/tubb-dtac

If you'd like to consider a shorter rifle barrel, but are worried about losing too much performance, run the math.

In the case of a 308 Win, every 4" of barrel length is approximately 100 fps, which only changes your hit percentage on an IPSC silhouette by 2 or 3% at 1000 yards.

Of course the fps per inch of barrel is greater with shorter barrels, and different for each cartridge/bullet, etc. Point being the actual effect of barrel length to hit percentage might be less than you think.

If you cut from 30" to 15", sure they'll be a significant performance reduction. But if you're sweating between 24" vs 20", you probably won't notice the difference considering all the other variables of long range shooting.

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