22 grendel, 224 grendel, 22 lbc

[Rtheurer]

Not 100% sure.

 

[flatlander]

I recently re-barreled a Howa Mini action with a Bartlein 1-6.8tw 5R in #3 sporter contour. Also bought a 250ct bag of Starline 6.5 grendel brass, Redding FL Type S bushing die, and a Forster 6.5 Grendel BR seater. Not sure how well that seater will work, but if necessary, will try to find a Forster Ultra Mic 6.5 Grendel seater, and get a blank sleeve with .22 cal pilot hole & seater stem to make my own seater. Haven't decided what stock to go with - really like a McMillan Game Scout on the Mini I built as a 6RAT, and would happily go with another one. It'd be much quicker & less expensive to have Boyds do a walnut Prairie Hunter (lighter than laminate), so may go that route for this rifle. Looking forward to seeing more load data listed here in this thread - will post photos when I get the rifle finished.

 

[calib]

Been running 3000 to 3050 with the cfe223 and 75 eld, was shooting nickle to dime group at 100 yards, then put a cheap can on and my groups are 2x the size as with no can

 

[LeeA]

I recently re-barreled a Howa Mini action with a Bartlein 1-6.8tw 5R in #3 sporter contour. Also bought a 250ct bag of Starline 6.5 grendel brass, Redding FL Type S bushing die, and a Forster 6.5 Grendel BR seater. Not sure how well that seater will work, but if necessary, will try to find a Forster Ultra Mic 6.5 Grendel seater, and get a blank sleeve with .22 cal pilot hole & seater stem to make my own seater. Haven't decided what stock to go with - really like a McMillan Game Scout on the Mini I built as a 6RAT, and would happily go with another one. It'd be much quicker & less expensive to have Boyds do a walnut Prairie Hunter (lighter than laminate), so may go that route for this rifle. Looking forward to seeing more load data listed here in this thread - will post photos when I get the rifle finished.

Why would you try to use a 6.5 Grendel BR seater, when a Forster 22PPC BR seater would fit perfectly?
The 22 Grendel is simply a 22 PPC Long (+.070 on the headspace gauge)
I have a wildcat of my own design, going back to the mid 80's, the 22 HAWK-L, which is virtually identical, except mine has a WBY type shoulder contour. The Lapua Grendel case is of match quality, and now saves me a number of case forming steps compared to using 220 Russian brass. Great small/intermediate all-round cartridge.

Lee

 

[flatlander]

I'm in the process of re-barreling another Howa Mini with a Bartlein blank in 6.5 Grendel, and was trying to 'cheap-out' if possible by using the same die set for the 22 Grendel. Gave up on that, as far as the seater goes, and ordered a micrometer head 22 short seater die blank from Troy Newlon. Yes, the Forster seater would've been less money, but I've really enjoyed doing business with Troy, so...

 

[rebeltex]

Ok, Quick Report

24" 1 in 6.5" twist Stainless barrel
80 gr Sierra MK (blems sorted by weight and length)
Varget
Hornady Grendel Brass
Fed SRM primers

26.0 gr 2728 fps ES 24 SD 9.6 Group .776 in
26.24 gr 2745 fps ES 45 SD 17.8 Group .807 in
26.5 gr 2787 fps ES 85 SD 33.3 one obvious outlier Group .983 in (one flier included)
26.74 gr 2801 fps ES 34 SD 13.2 Group .930 in

Quickload after fine tuning shows I should max out at 2905 fps with 27.75 gr Varget at 52,000 psi
Will continue with Varget to see.

Looking at R 17 as next test.

 

[AckleymanII]

Jeez, 52 sure seems low, but I doubt that Hornady brass will take much pressure.

 

[Rtheurer]

Jeez, 52 sure seems low, but I doubt that Hornady brass will take much pressure.

I agree. 52000 is well below what most of us are running.

If you go into Quick Load like he referances and select 6.5 Grendel as the parent cartridge. The SAMMI is 52000. Yet right beside it. CIP is 58,000. As is 22PPC also 58,000. and 6PPC USA is 58,000.
Only the 7.62X39 with the Large Rifle Primer pocket is rated down in that low 50,000 PSI.

I feel he is giving up well before you need to. To the point you might as well run a 223 Rem. Been working with Varget and running 88gr ELD's at over 3000 fps just showing signs of pressure in the summer. That's with a 24" barrel in a Bolt action rifle.

 

[rebeltex]

I’m not giving up there, just stating that that is where it maxes at at SAMMI max. If I don’t see pressure signs on the brass I’ll go a bit further.

 

[Rtheurer]

Sounds good. Take a look at the Pressure of the Parent cartridge for CIP. Its 58,000. Odd there is that much disparity, but there is.
I am up around 28gr just FYI for you. I am running 75's at 3100fps.

 

[rebeltex]

Maybe I also should say this is an AR.

 

[bowfisher]

Any updates on these?

 

[TAJ45]

Just remember guys, when setting a tgt velocity and knowing that some folks have equalled or exceeded the desired speed, some bbls are just faster or slower. Sometimes by over 100+ fps, apples to apples. Just sayin'

 

[Huckleberry75]

Got a 20" 7tw that just arrived. Planning to run the 69 or 77 tmk for critters.

 

[Thauglor]

The max is low in SAMMI to save bolts in factory rifles with factory ammo. No ammo manufacturer wants to produce ammo that can crack lugs and then someone wont notice it and keeps firing with broken lugs. Just like the new 6mm ARC round is low pressure.

 

[calib]

Older post, but still playing with this round a bunch.

I have been running 69 tmk at about 3175fps and using them on coyotes. I am now looking at going to 64 tgk bullets to try and see how they do on dogs as well.

I am having bart @ baldwin gun works do an upper that now will be poston driven as I get real tired of cleaning an ar rifle. Will be 22" rifle length system, hoping to keep the accuracy to 500 and we will see what I can get for speed.

Anyone running 64 grain bullets in a set up similar?

 

[LeeA]

Older post, but still playing with this round a bunch.

I have been running 69 tmk at about 3175fps and using them on coyotes. I am now looking at going to 64 tgk bullets to try and see how they do on dogs as well.

I am having bart @ baldwin gun works do an upper that now will be poston driven as I get real tired of cleaning an ar rifle. Will be 22" rifle length system, hoping to keep the accuracy to 500 and we will see what I can get for speed.

Anyone running 64 grain bullets in a set up similar?

Energy wise, it calculates to 3295 fps.

 

[hikfromstik]

Does your brass deflector dent the necks ? Thats my biggest gripe with my AR grendel. New brass fires 1/2" groups then my necks ding up bad and mess with the neck diameter. Next firing I'm lucky if I get a 3/4 to 1 inch group . Very frustrating. I did see a deflector pad on Amazon that may help . I've tried velcro, but it only partially helps.

 

[OmegaRed]

Does your brass deflector dent the necks ? Thats my biggest gripe with my AR grendel. New brass fires 1/2" groups then my necks ding up bad and mess with the neck diameter. Next firing I'm lucky if I get a 3/4 to 1 inch group . Very frustrating. I did see a deflector pad on Amazon that may help . I've tried velcro, but it only partially helps.

I use a thick "loft" velcro pad and get no case neck denting. You're using the fluffy side of the hook and loop pad?

 

[calib]

Does your brass deflector dent the necks ? Thats my biggest gripe with my AR grendel. New brass fires 1/2" groups then my necks ding up bad and mess with the neck diameter. Next firing I'm lucky if I get a 3/4 to 1 inch group . Very frustrating. I did see a deflector pad on Amazon that may help . I've tried velcro, but it only partially helps.

I was getting them in the body of the case, put the pad on there took that away, also when night hunting and at the range I run a brass catcher that helps too