Comments on: Sierra Offers New Ultra-High-BC 197gr 7mm (.284) MatchKing

By: Bryan Zolnikov

Bryan Zolnikov — Sat, 04 Jan 2020 01:57:50 +0000

I just tested these in my .284 win 7tw 28in 1.25 straight Krieger barrel. I used RL26 and worked up to 53gr. The 52.2grain load was very precise in the .1 to .2 range and it chono’d at 2550 fp/s. I showed no pressure signs up to 53 so I’ll keep loading up. My testing was done from a bench free recoil style so I have yet to go in the prone with these but I imagine the recoil may be a factor once I go prone…we will see.

By: smaller

smaller — Thu, 02 Nov 2017 15:45:53 +0000

For David Joe:
Could you tell me more about your load data for .284 Winchester ?

By: David Joe

David Joe — Sat, 21 Jan 2017 16:47:06 +0000

I just left the 100 yard range testing them in the same 8 twist barrel that I use for EOL 195’s. They group just as expected through my .284 using H 1000, meaning just like the other heavies. Yes there is torque and recoil, and lighter bullets group slightly better at 100 yards. But these days long range matches are almost exclusively from 1,000 yards and shooting the heaviest bullets in 2016 I think helped me get HM.

By: guy4064

guy4064 — Tue, 17 Jan 2017 00:41:55 +0000

Im sure to see this bullet on the line during LR matches in 7mm short mag

By: Matt

Matt — Mon, 16 Jan 2017 22:58:37 +0000

These would be awesome in a 300 Norma magnum case necked down to 7mm. Such as the 284 Piper.

By: Bo Guss

Bo Guss — Mon, 16 Jan 2017 19:40:46 +0000

Plus they could have forgotten about trans sonic and subsonic behavior and made a shorter boat tail, maybe they would have worked in a standard 8″ twist.

By: Bo Guss

Bo Guss — Mon, 16 Jan 2017 19:37:49 +0000

It would have been a breakthrough had it been lighter than the previous 183 grainer. No wonder the bc is boosted with such a high sectional density.

By: Richard

Richard — Mon, 16 Jan 2017 19:21:15 +0000

I think it is too heavy for calibre again (like the new 6mm offering). Fast twist barrel and heavy projectile equals a lot of torque on the bags or in your hands and translates to fliers.

A lot of internet experts will say hooray for the figures but never shoot competitively or will be disappointed in their real world results. This is a specialised bullet for specialist shooting and the equipment needed will be niche.

By: Kurz

Kurz — Mon, 16 Jan 2017 18:39:51 +0000

I guess I needed some coffee before I read this…

By: David Joe

David Joe — Mon, 16 Jan 2017 16:48:16 +0000

Factory pointing is a very nice offering and I don’t know any shooters that have thought, if they tried it, that they could improve on Sierra’s performance by retipping.