6.5 grendal and 748

Deleted_User_13284 · Member Joined: Oct 10, 2021 Posts: 127

Had the grendal at the farm as well. Still trying different things with it. Its main load it likes is a 85gr sierra hp and 2217 at 2990fps. I tried some 90gr speer tnt and win 748 it was accurate but only doing 2550fps not sure if thats good velocity but ive run out of speers and being that 6.5 is getting hard to get ill stick to the other load..

slimjim · Posted: Sat Oct 16, 2021 3:41 pm Post subject: Re: 6.5 grendal and 748

northdude, what barrel length do you have? I've not heard of velocities that high in a Grendal.

Deleted_User_13284 · Member Joined: Oct 10, 2021 Posts: 127

Ill measure it later but its the standard length howa mini sporter Im not getting any pressure signs.

Deleted_User_13284 · Member Joined: Oct 10, 2021 Posts: 127

Its a 19" barrel

slimjim · Posted: Sun Oct 17, 2021 3:26 pm Post subject: Re: 6.5 grendal and 748

Is 2217 a Western Powder? It wasn't listed in their load data and your velocity exceeds their other powders for the Grendel.

Grendel loads are typically limited to 51-52K in ARs due to week bolts and brass. Your bolt gun may be able to handle more pressure.

I built a Uintah 6.8 bolt gun but haven't focused on developing loads for it yet.

Deleted_User_13284 · Member Joined: Oct 10, 2021 Posts: 127

Its adi powder and its a howa bolt action

Deleted_User_13284 · Member Joined: Oct 10, 2021 Posts: 127

Sorry ar2219 is the powder

slimjim · Posted: Mon Oct 18, 2021 9:57 am Post subject: Re: 6.5 grendal and 748

Sounds like a keeper. You are fortunate to achieve a higher velocity with an 19" barrel as ADI did with a 24" barrel and more powder charge.

Deleted_User_13284 · Member Joined: Oct 10, 2021 Posts: 127

Yep sometimes rifles do wierd things dont they

Deleted_User_13284 · Member Joined: Oct 10, 2021 Posts: 127

last trip I tried 31gr 748 and an 85 sierra hp it chronied at flat 2700. that will keep me happy for the time being..

Deleted_User_13284 · Member Joined: Oct 10, 2021 Posts: 127

had another shoot on the weekend using above 31gr 748. Was shooting consistent 7/16" 4 shot groups at 100yd Very Happy

Vince · Posted: Mon Feb 07, 2022 8:36 pm Post subject: Re: 6.5 grendal and 748

northdude wrote:

had another shoot on the weekend using above 31gr 748. Was shooting consistent 7/16" 4 shot groups at 100yd Very Happy

Methinks it’s a keeper mate.

PaulS · Posted: Thu Feb 17, 2022 12:31 am Post subject: Re: 6.5 grendal and 748

I don't complain too much at anything under an inch at 100 yards. Consistent groups and first round impacts are all ya need. Smile

Elvis · Posted: Thu Feb 17, 2022 2:38 am Post subject: Re: 6.5 grendal and 748

PaulS wrote:

I don't complain too much at anything under an inch at 100 yards. Consistent groups and first round impacts are all ya need. Smile

AMEN to that...... Cheers

slimjim · Posted: Thu Feb 17, 2022 10:14 am Post subject: Re: 6.5 grendal and 748

To build confidence in my rifle and its loads, shoot a 10-shot group. But not what you think. I shoot 2 shots from a cold barrel, take the target down, then shoot two more shots at the same target at a different time. After repeating this process over multiple times in different weather conditions, I find out the true accuracy of my rifle/loads.