243 IMR4064
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tugboater
Well-known member
Originally Posted By: BrownieOriginally Posted By: tugboater87gr vmax....37.8 grs of IMR 4064, chronographed at 2950fps out of a 20" barrel.
Very acurate.
I picked up a few hundred 87's hows the accuracy and what twist barrel?
They shoot lights out in my Rem 700. I have a 10 twist, I think....
Very acurate.
I picked up a few hundred 87's hows the accuracy and what twist barrel?
They shoot lights out in my Rem 700. I have a 10 twist, I think....
GC
Well-known member
Originally Posted By: tugboaterOriginally Posted By: BrownieOriginally Posted By: tugboater87gr vmax....37.8 grs of IMR 4064, chronographed at 2950fps out of a 20" barrel.
Very acurate.
I picked up a few hundred 87's hows the accuracy and what twist barrel?
They shoot lights out in my Rem 700. I have a 10 twist, I think....
For what it's worth, my Model 700 and Model Seven .243 rifles are 9.125 twist.
Very acurate.
I picked up a few hundred 87's hows the accuracy and what twist barrel?
They shoot lights out in my Rem 700. I have a 10 twist, I think....
For what it's worth, my Model 700 and Model Seven .243 rifles are 9.125 twist.
tugboater
Well-known member
Originally Posted By: GCOriginally Posted By: tugboaterOriginally Posted By: BrownieOriginally Posted By: tugboater87gr vmax....37.8 grs of IMR 4064, chronographed at 2950fps out of a 20" barrel.
Very acurate.
I picked up a few hundred 87's hows the accuracy and what twist barrel?
They shoot lights out in my Rem 700. I have a 10 twist, I think....
For what it's worth, my Model 700 and Model Seven .243 rifles are 9.125 twist.
Mine is an old BDL varmint special. Pretty sure it a 10 twist.
Very acurate.
I picked up a few hundred 87's hows the accuracy and what twist barrel?
They shoot lights out in my Rem 700. I have a 10 twist, I think....
For what it's worth, my Model 700 and Model Seven .243 rifles are 9.125 twist.
Mine is an old BDL varmint special. Pretty sure it a 10 twist.
4064 will work get with a variety of bullets including the 100g but it is on the slower side.
If you want speed with accuracy with the 80-85g, then R#19 with the win primer will get you all over 3200-3300 fps. Plan on bumping the shoulder or full length sizing after ever firing where the accuracy node is. R#19 produces a very accurate hunting load with SPEED. However, the load is on the warm side...I use it hunting.
Also, IMR4064 with the 80g Sierra and 80g Tipped triple shock, if you work up till you see pressure you will find really great accuracy at 3400 fps area.
I use the Forster/Bonanza neck dies and bump the shoulders back .002 on every firing and will get away from FL sizing when I will trim the cases which is usually around 4-5 firings.
In my coyote loads in many 700's, usually the 70g will love a 39g IMR 4064 load with a Fed 210, and the 80g will be either 41.5-42.0, and work up to that load in your rifle as it is warm. R#19 in my 24" rem 700 will be 3250 +/- a tad, and if you get a good lot of 87V's you are in the money. For example, I shoot a load of 44.5g of R#19 with the 85g Barnes tipped triple shock with a .050 jump and get less than 1/2" group accuracy out of 700's that have been bedded and free floated.
So, I will use 4064 till the 80g, then switch to the R#19 for 85-87g bullets. Then H or IMR 4350 for the 95-100g bullets out of habit. I am sure that R#19 would shine with the 100g, but supplies have been tight for years now, have to use what you can find.
If you want speed with accuracy with the 80-85g, then R#19 with the win primer will get you all over 3200-3300 fps. Plan on bumping the shoulder or full length sizing after ever firing where the accuracy node is. R#19 produces a very accurate hunting load with SPEED. However, the load is on the warm side...I use it hunting.
Also, IMR4064 with the 80g Sierra and 80g Tipped triple shock, if you work up till you see pressure you will find really great accuracy at 3400 fps area.
I use the Forster/Bonanza neck dies and bump the shoulders back .002 on every firing and will get away from FL sizing when I will trim the cases which is usually around 4-5 firings.
In my coyote loads in many 700's, usually the 70g will love a 39g IMR 4064 load with a Fed 210, and the 80g will be either 41.5-42.0, and work up to that load in your rifle as it is warm. R#19 in my 24" rem 700 will be 3250 +/- a tad, and if you get a good lot of 87V's you are in the money. For example, I shoot a load of 44.5g of R#19 with the 85g Barnes tipped triple shock with a .050 jump and get less than 1/2" group accuracy out of 700's that have been bedded and free floated.
So, I will use 4064 till the 80g, then switch to the R#19 for 85-87g bullets. Then H or IMR 4350 for the 95-100g bullets out of habit. I am sure that R#19 would shine with the 100g, but supplies have been tight for years now, have to use what you can find.
Last edited:
GC
Well-known member
Originally Posted By: tugboaterOriginally Posted By: GCOriginally Posted By: tugboaterOriginally Posted By: BrownieOriginally Posted By: tugboater87gr vmax....37.8 grs of IMR 4064, chronographed at 2950fps out of a 20" barrel.
Very acurate.
I picked up a few hundred 87's hows the accuracy and what twist barrel?
They shoot lights out in my Rem 700. I have a 10 twist, I think....
For what it's worth, my Model 700 and Model Seven .243 rifles are 9.125 twist.
Mine is an old BDL varmint special. Pretty sure it a 10 twist.
Bet that is a shooter. Buddy had one in .243, I had one in .22-250. Both shot fantastic groups.
Very acurate.
I picked up a few hundred 87's hows the accuracy and what twist barrel?
They shoot lights out in my Rem 700. I have a 10 twist, I think....
For what it's worth, my Model 700 and Model Seven .243 rifles are 9.125 twist.
Mine is an old BDL varmint special. Pretty sure it a 10 twist.
Bet that is a shooter. Buddy had one in .243, I had one in .22-250. Both shot fantastic groups.
TaterTot
New member
Not to high jack the thread, but how temp sensitive is 4064? I am currently shooting factory 58's out of my 243, but have some 70 grain ballistic tips on hand to load. I also have 4064, IMR4350, and some Varget. I use Varget for my 22-250 and wouldn't mind sharing the powder, but it's hard to find! I wouldn't mind having separate powders for the different rifles I load for.
Hidalgo
Well-known member
IMR4064 is known to be a bit temp sensitive, although not as much as H335 and some others. I haven't used it for several seasons so I can't say with any accuracy just how much, but unless you're loading near the max in cold weather I wouldn't worry about it too much.
That's just another reason that when I develop loads with powders that are known to show pressure swings I try to find an accuracy node with a load that is well under max. No worries after that. Not to mention less strain and wear on the brass.
That's just another reason that when I develop loads with powders that are known to show pressure swings I try to find an accuracy node with a load that is well under max. No worries after that. Not to mention less strain and wear on the brass.
CalCoyote
New member
Originally Posted By: ackleyman
Also, IMR4064 with the 80g Sierra and 80g Tipped triple shock, if you work up till you see pressure you will find really great accuracy at 3400 fps area.
Sometimes I wish Oregon was one of those states that had a large enough deer population so as to allow the hunter to harvest more than one deer per year. I would love to test different bullets on terminal performance. I would think that 80g Barnes ttsx spinning out the barrel at 3300 fps would be interesting on these Blacktail deer up here in the Oregon Cascades. I have always been a partition fan but would like to try the Barnes just for curosity's sake.
Also, IMR4064 with the 80g Sierra and 80g Tipped triple shock, if you work up till you see pressure you will find really great accuracy at 3400 fps area.
Sometimes I wish Oregon was one of those states that had a large enough deer population so as to allow the hunter to harvest more than one deer per year. I would love to test different bullets on terminal performance. I would think that 80g Barnes ttsx spinning out the barrel at 3300 fps would be interesting on these Blacktail deer up here in the Oregon Cascades. I have always been a partition fan but would like to try the Barnes just for curosity's sake.