Well another rimfire build finished

[Matt_3479]

What chamber?

Eley eps

 

[grauhanen]

No I fired 15 10 shot groups at 100 yards a few at 50, and the rest at 200, and 300 and barricade practice.

Even 15 consecutive sub-.910" ten-shot groups at 100 yards with SK Rifle Match is an incredible achievement. Equally remarkable over the course of 150 rounds is the complete absence of any fliers or rounds that didn't fly as hoped. Both are extraordinary and very noteworthy.

To put this astonishing achievement into perspective, consider the following.

The rifle was testing SK Rifle Match in outdoor conditions. The largest of the 15 consecutive ten-shot groups was .910" center-to-center (or about 28.7mm outside-to-outside). The average of all fifteen consecutive groups must be less than .910".

In February 2020, results were published (in another forum) of a comparison of the ten-shot group results over ten rifles, including custom BR rigs, using Center X at both 50 and 100 meters in a Lapua testing facility. (Presumably these rifles were shot from a fixture/vise.)

The average for the two best rifles, a Turbo and a Stiller, were 28.329 and 28.507mm outside-to-outside (or .896 and .903" center-to-center) at 100 meters with the best lots of CX then available.

Your average over the 15 ten-shot groups with SK RM, which must be less than .910" (or 28.7mm oto), is clearly better than the average eight of the ten rifles tested at the Lapua facility. More significantly, this average is either better or very nearly equal to the two best rifles tested in the tunnel.

Clearly, your rifle shot the 15 back-to-back SK Rifle Match ten-shot groups at 100 with exceptional results.

 

[DaveCo]

How much difference would you expect from 100 meters v 100 yds? Ar least 10%?

TIA

Dave

 

[RGRobinett]

I worked with Ryan over at international barrels on my vudoo 360 build and while building tbat one we planned this one. So with Ryan’s help he put together an ultimatum deuce action, ibi 1:12 twist 22” straight. It’s bouncing back and fourth between an mdt acc and manners prs1t, trigger tech diamond, apex rival 4-32x56mm.

Some out-of-the-box, savvy thinking there! RG

 

[Schutzen2]

I worked with Ryan over at international barrels on my vudoo 360 build and while building tbat one we planned this one. So with Ryan’s help he put together an ultimatum deuce action, ibi 1:12 twist 22” straight. It’s bouncing back and fourth between an mdt acc and manners prs1t, trigger tech diamond, apex rival 4-32x56mm.

Do you have an opinion about whether or not the 12t barrel has something to do with this rifle's accuracy?

 

[Matt_3479]

Do you have an opinion about whether or not the 12t barrel has something to do with this rifle's accuracy?

There’s a lot of belief the 1:12 provides more consistency at 100-150+ but the 1:16 does well slightly better at 25-150