F Class X Ring Comparisons: 284 Win & 25x47L

[rafale]

I had to dig some but I found the 2017 F Open results for the Southwest Nationals. Your hero shot that match. Looks like he finished at the bottom of the Master division with a 1197-29x. F Open winning score was 1247-84x. Winning F-TR score was 1230-53x . I shot a 1210-31 with a 308. Yeah, those little bullets work really well.

You are right but John Whidden was shooting a record at the 2017 Southwest Nationals with a 6mm . We all searching a perfect caliber but for me
very good barrel and bullets are the key (most great part)of long range precision.

Michel

 

[LGKLAS]

Rardoin- (not to hijack thread) what barrel length and twist rate were you running shooting the 150 SMK/6.5 ? TIA, lg

 

[Medic505]

You are right but John Whidden was shooting a record at the 2017 Southwest Nationals with a 6mm . We all searching a perfect caliber but for me
very good barrel and bullets are the key (most great part)of long range precision.

Michel

True, he was also shooting on target twice the size of a F Class target.

 

[rafale]

True, he was also shooting on target twice the size of a F Class target.

Yes but it's more stable shooting with rest and bags!

 

[rardoin]

Rardoin- (not to hijack thread) what barrel length and twist rate were you running shooting the 150 SMK/6.5 ? TIA, lg

PM sent

 

[Medic505]

Yes but it's more stable shooting with rest and bags!

This thread is about bullet performance, not stability of a shooting platform.

 

[urbanrifleman]

I had to dig some but I found the 2017 F Open results for the Southwest Nationals. Your hero shot that match. Looks like he finished at the bottom of the Master division with a 1197-29x. F Open winning score was 1247-84x. Winning F-TR score was 1230-53x . I shot a 1210-31 with a 308. Yeah, those little bullets work really well.

Dave doesn't shoot f class. Not seriously. Your dataset of one is just lame. Sorry, but it is...

Dave is literally the most successful shooter in the history of competitive centerfire rifle shooting. So he's my hero. How many Nationals have you won?

 

[Medic505]

Dave doesn't shoot f class. Not seriously. Your dataset of one is just lame. Sorry, but it is...

Dave is literally the most successful shooter in the history of competitive centerfire rifle shooting. So he's my hero. How many Nationals have you won?

One more than you?

 

[urbanrifleman]

One more than you?View attachment 1095387

49 less than Tubb.

 

[Nature Boy]

Glad to see some good discussion. Crazy day in the oilfield and in the midst of it all I hear about an article in TRIGGER covering 25 Creedmoor, but was too busy to go get a copy. A good read if you guys are swinging by Wal-Mart, Bass Pro, Cabela's etc.

As others have reported on the 0.330 G7, the author had similar experience at some 1036 yards as shown below.

View attachment 1095325

View attachment 1095326

Other good news, I will be picking up an old F-Class rig from a friend to build 25x47L and a 25 WSSM utilizing RCC brass. The first because I know how accurate the 25x47 behaves and 25 WSSM because it's fun and has nearly the exact overbore index of 284 win!

I first heard of this “quarter bore” revival a month or so ago when I saw the rifle that Short Action Customs built.

It’s been intriguing me ever since.

 

[257Blackjack]

Same can be said of the 150 SMK/6.5mm. I have had some really great groups in testing and the B.C. holds true as published in my runs at 600 and 1000yds. However, the "raw accuracy", should I rephrase as consistent accuracy, has not been there for me...yet. I was dropping points with very unexpected shots not explained by conditions. Switched back to a tried and true lower B.C. 142 bullet and scores went back to my usual performance. I will give them another go at 1000 this weekend running them slower and in a faster twist barrel. At the 2900-2920 fps range I will run them at they will shoot inside of a .284/184gr/2850 fps.....but will they drop more points due to less precision? Will the Black Jack (made by Sierra?) be as consistent as Berger 180/184gr in spite of a better B.C.? I'm a sceptic but I hope to prove myself wrong this weekend.

RARDOIN,

I will be buying an F-Class rig from a former Team USA member and will be testing the 25x47L and 25 WSSM with RCC Brass at 1000 extensively in the next month. I'll update with pics of vertical results.

I won't say too much at this time, but if we see issues with vertical dispersion we have an Ace in the Hole so to speak to remediate this, and this piece of tech has been on our To Do list for about six months. We have to play with it to get it right, but the process can make shot to shot vertical improve for any bullet and is likely the unseen reason why some projectiles outperform others in waterline.

I have been waiting for the process to be integrated into the bulk mfg line equipment but it's not there just yet.

This testing will be a little ahead of me receiving my Oehler 89 unit but will be good timing to carry out the testing from a pure accuracy standpoint and then check TOF / BC SD / Waterline when the Oehler 89 arrives.

I have seen the actual results from a TOF / BC SD perspective, and a pure accuracy perspective and was quite impressed and for certain groups of shooters the minor tradeoff in BC could be worth the waterline results.

This should be in late May or June.

 

[KenOath]

RARDOIN,

I will be buying an F-Class rig from a former Team USA member and will be testing the 25x47L and 25 WSSM with RCC Brass at 1000 extensively in the next month. I'll update with pics of vertical results.

I won't say too much at this time, but if we see issues with vertical dispersion we have an Ace in the Hole so to speak to remediate this, and this piece of tech has been on our To Do list for about six months. We have to play with it to get it right, but the process can make shot to shot vertical improve for any bullet and is likely the unseen reason why some projectiles outperform others in waterline.

I have been waiting for the process to be integrated into the bulk mfg line equipment but it's not there just yet.

This testing will be a little ahead of me receiving my Oehler 89 unit but will be good timing to carry out the testing from a pure accuracy standpoint and then check TOF / BC SD / Waterline when the Oehler 89 arrives.

I have seen the actual results from a TOF / BC SD perspective, and a pure accuracy perspective and was quite impressed and for certain groups of shooters the minor tradeoff in BC could be worth the waterline results.

This should be in late May or June.

Look forward to seeing your results..

 

[rardoin]

Same can be said of the 150 SMK/6.5mm. I have had some really great groups in testing and the B.C. holds true as published in my runs at 600 and 1000yds. However, the "raw accuracy", should I rephrase as consistent accuracy, has not been there for me...yet. I was dropping points with very unexpected shots not explained by conditions. Switched back to a tried and true lower B.C. 142 bullet and scores went back to my usual performance. I will give them another go at 1000 this weekend running them slower and in a faster twist barrel. At the 2900-2920 fps range I will run them at they will shoot inside of a .284/184gr/2850 fps.....but will they drop more points due to less precision? Will the Black Jack (made by Sierra?) be as consistent as Berger 180/184gr in spite of a better B.C.? I'm a sceptic but I hope to prove myself wrong this weekend.

An example of the above performance of the very high B.C. 150 SMK in a 5 shot test at 300yds....albeit in some way less than ideal test conditions but not severe enough to account for the spoiler. This was repeating in matches at 600/1000 and cost me points. Although this load theoretically shoots a bit inside of a .284/184gr BH/2850 fps...if this turd shows up in a match...well...you get the idea:

 

[MattPeetz]

RARDOIN,

I will be buying an F-Class rig from a former Team USA member and will be testing the 25x47L and 25 WSSM with RCC Brass at 1000 extensively in the next month. I'll update with pics of vertical results.

I won't say too much at this time, but if we see issues with vertical dispersion we have an Ace in the Hole so to speak to remediate this, and this piece of tech has been on our To Do list for about six months. We have to play with it to get it right, but the process can make shot to shot vertical improve for any bullet and is likely the unseen reason why some projectiles outperform others in waterline.

I have been waiting for the process to be integrated into the bulk mfg line equipment but it's not there just yet.

This testing will be a little ahead of me receiving my Oehler 89 unit but will be good timing to carry out the testing from a pure accuracy standpoint and then check TOF / BC SD / Waterline when the Oehler 89 arrives.

I have seen the actual results from a TOF / BC SD perspective, and a pure accuracy perspective and was quite impressed and for certain groups of shooters the minor tradeoff in BC could be worth the waterline results.

This should be in late May or June.

So your going to cut rings on the nose of bullets

 

[dougridgeore]

In my opinion after reading thru the whole thread and after trying the latest and greatest calibers,twist rates, and new bullet designs for over 30 years.

The one thing can’t be argued....and especially with mid range match and e targets..... the biggest diameter bullet you can legally shoot is always the one that is closest to the line..... also after shooting 4 different calibers in f open competition for over a decade... I will always stick with the calibers that I can easily source very good quality brass, that will not shoot the pockets loose in three shots. For me that’s a straight 284 Win shooting 6.5x284 Lapua brass. I think in the end it’s about how much time do you want to spend shooting versus how much time do you want to spend on brass prep?