Lt-32/lt-30

[MikeyMosin]

I recently came across these two powders in my search for anything on the shelves. It seem that LT-32 Is actuallly really close to IMR 8208 if not actually being a select batch of this powder. This seems to be the gold standard when it comes to reloading 6.5 Grendel, I havent seen many people talk about the LT-32. Does anyone have any experience with this powder? If so I'd love to hear about your experience and what your loading!

[LR1955]

I recently came across these two powders in my search for anything on the shelves. It seem that LT-32 Is actuallly really close to IMR 8208 if not actually being a select batch of this powder. This seems to be the gold standard when it comes to reloading 6.5 Grendel, I havent seen many people talk about the LT-32. Does anyone have any experience with this powder? If so I'd love to hear about your experience and what your loading!

M&M:

I wouldn't use 8208 as the Gold Standard for loading the Grendel. It is way too unpredictable when it closes in on its higher loads.

Don't know what powder would be considered the 'Gold Standard'. Personally, I think it is 2520 but am sure about everyone here has their own opinion on it.

I think Klem and LRRP-52 probably know that those powders are and can offer you good advice.

LR-55

[VASCAR2]

Western has online load data which has 6.5 Grendel data using LT30 & LT 32. LT 30 & LT 32 are very fast powders, even faster than A2200 then A2230. According to Western’s burn rate chart IMR8208XBR is on the same line as H4895 and one line below A2520. A max load of LT32 with a 123 grain SCENAR bullet out of a 20” barrel is 2204 FPS at 51585 psi. A2230 max load with a 123 grain SCENAR is giving 2388 FPS at 51668 psi. A2520 max load gives with 123 grain SCENAR 2471 FPS at 51833 psi.

I have never used LT30 or LT 32 powder but I would use this powder with lighter bullets under 108 grains in the 6.5 Grendel. Popular powders that give reasonable temperature stability are H4895, AR Comp, Benchmark and IMR8208XBR. A few forum members have used Power Pro Varmint and gotten good velocities. CFE223 and LeveRevolution produce higher velocities in the 6.5 Grendel but are ball powders that aren’t temperature stable. Alliant released Reloader 15.5 which is supposed to be a temperature stable powder and there is load data online for the 6.5 Grendel. I haven’t seen much talk about R15.5 but Johnny’s Reloading bench used some R15.5 with the 6 ARC. Reloader 15.5 might be to bulky a powder to get decent velocity due to the 6.5 Grendel small case capacity. I haven’t seen any Reloader 15.5 locally or I’d probably buy a pound for testing.



Link to Western load data.

https://ramshot.com/wp-content/uploads/2....0_WEB.pdf

Here is a page of Reloader 15.5 load data.

[lazyengineer]

I use LT32 a lot. It's considerably faster than 8208, so don't interchange those 2. It's basically 4198 speed.

I use it under 90's and 85's - and even there it's a bit fast for Grendel - but good. It'll cost you maybe 100 fps vs some other options, but that's not a huge deal, and is very accurate powder. I love the stiff.

After much testing - my personal #1 fav general Grendel powder is actually TAC. I get my best accuracy and highest velocity with it.

That said, I do quite like LT32, and use it on the light end. It's my powder of choice in 7.62x39 brass with TNT 90's.

I will say, LT30 is probably not a great choice - as it's even faster.

[outbreaker]

I use LT32 a lot. It's considerably faster than 8208, so don't interchange those 2. It's basically 4198 speed.

I use it under 90's and 85's - and even there it's a bit fast for Grendel - but good. It'll cost you maybe 100 fps vs some other options, but that's not a huge deal, and is very accurate powder. I love the stiff.

After much testing - my personal #1 fav general Grendel powder is actually TAC. I get my best accuracy and highest velocity with it.

That said, I do quite like LT32, and use it on the light end. It's my powder of choice in 7.62x39 brass with TNT 90's.

I will say, LT30 is probably not a great choice - as it's even faster.

Love TAC in the Grendel. My ladders show a wide harmonic with it that makes for a very forgiving powder. 120gr SMK are producing .3-.5" 5-shot groups at 100yds. 120gr NBT are shooting about .5-1" at 100yds. Good temp stability from what I have seen.

[MikeyMosin]

may be better suited for .223 / 5.56 loads, Ill have to do some more research. I picked up some LT-30 last time I was at cabellas and the only reason I did was because it mentions right on the can that its a "great" powder for 6.5 grendel.

I would love to try some of the Alliant powders but have yet to find any in stock.

I did manage to get one pound of TAC and 2520 which i kind of figured would be my best bet, but am having a hard time finding projectiles. I recently ordered some Hornaday 123 SST's and am waiting on them to come in. Currently I have some privi 120 HPBT's and berger 130 vld hunters and there is not much load data for either of those. The 6.5 handbooks show a load with 2520 for the 140 vld's but being new to reloading, I would like to stick with published data for my first batch.

Anyway thanks for the imput!
Mikey

[MikeyMosin]

I have been looking at the western powders book again and I see it does show some loads in there for these powders, I have been looking at so many different reloading manuals recently, It gets a bit overwhelming. Would it be unsafe to use the SMK 120gn HPBT for the privi bullets I have?

[outbreaker]

I have been looking at the western powders book again and I see it does show some loads in there for these powders, I have been looking at so many different reloading manuals recently, It gets a bit overwhelming. Would it be unsafe to use the SMK 120gn HPBT for the privi bullets I have?

I was reloading the Grendel when almost no load data was available (unlike today) I used powders like Benchmark that everyone said would blow up my rifles. Yet the load I developed was in what is now considered the safe range of Benchmark.

I would start at the starting load for TAC with the 120 SMK and shoot a ladder in .2 gr increments and use a chrono to look for pressure spikes. Test it and see.

[lazyengineer]

I have been looking at the western powders book again and I see it does show some loads in there for these powders, I have been looking at so many different reloading manuals recently, It gets a bit overwhelming. Would it be unsafe to use the SMK 120gn HPBT for the privi bullets I have?

Certainly not unsafe - just use their recommended load. It won't have the velocity of a slower powder, but will still work and be safe. Just be aware it will have a fast pressure fall off with such, so maybe will starve the gas port and short stroke on you in an AR15, depending on your gas system. Rifle length probably won't cycle. Carbine probably still will. Middy will be a test and see.

Also Westerns manual is the best one. When in doubt, follow that one.

[outbreaker]

Starting load on Westerns info and Hodgdons info is showing the range on TAC is 25.8-28.7

[MikeyMosin]

I didn't necessarily mean for the LT powders, I was curious because there is no load data for the privi bullets, and it looks like the smk HPBT is the closest. Its tough because privi doesn't give a BC or SD data for the projectiles. I'm sure if I had this info it would be easier to find a proj. that is close to the specs.

[MikeyMosin]

I was reloading the Grendel when almost no load data was available (unlike today) I used powders like Benchmark that everyone said would blow up my rifles. Yet the load I developed was in what is now considered the safe range of Benchmark.

I would start at the starting load for TAC with the 120 SMK and shoot a ladder in .2 gr increments and use a chrono to look for pressure spikes. Test it and see.

thanks!

[MikeyMosin]

Its actually an Intermediate length gas system on an 18" barrel. its in-between mid and rifle length.

[MikeyMosin]

I was reloading the Grendel when almost no load data was available (unlike today) I used powders like Benchmark that everyone said would blow up my rifles. Yet the load I developed was in what is now considered the safe range of Benchmark.

I would start at the starting load for TAC with the 120 SMK and shoot a ladder in .2 gr increments and use a chrono to look for pressure spikes. Test it and see.

Ive also been thinking about using the load data for the 140 vld to work up a load for my 130's as they data usually shows lower powder loads for heavier bullets. As long as i can get them to chamber with out them jamming, I believe this should also be a safe place to start?

[MikeyMosin]

Starting load on Westerns info and Hodgdons info is showing the range on TAC is 25.8-28.7

Thats another thing i should keep in mind is comparing manuals, It seems like you can get a good feel for the range as most will be in the same "ball park"

Again Im really new to reloading so I appreciate all the info you guys are giving me.

[lazyengineer]

Ive also been thinking about using the load data for the 140 vld to work up a load for my 130's as they data usually shows lower powder loads for heavier bullets. As long as i can get them to chamber with out them jamming, I believe this should also be a safe place to start?

That's a rabbit hole I suggest you skip for now. Running 140 in Grendel with any powder is going to be a slow bullet that never gets up to speed. It will have a short range of still actually flying above supersonic transitional speeds (i.e not accurate at long range and a rainbow trajectory requiring very consistent velocity and range estimation to hit), and have terminal impacts at below the engineered performance range. Basically, it will be a frustrating exercise at trying to throw bricks. Stick with the 123 or less, is my suggestion.