Post by: bugs n bones on October 13, 2012, 12:24:17 PM
Post by: bare.hunter on October 13, 2012, 12:29:45 PM
Post by: Sabotloader on October 13, 2012, 02:40:10 PM
anyone have any experience with them
IMR White Hots are the same thing as the regular Hodgdon T7 pellets except they are not died black. T7 powder in its' native state is white - but it is died black to be a black powder...
Post by: MountainDevil54 on October 13, 2012, 08:39:58 PM
Post by: Sabotloader on October 14, 2012, 07:04:46 AM
i wouldn't say they are exactly the same as t7 pellets since they shoot slower.
Jon they are exactly the same minus the dye - made in the same place...
You realize there are T7 mag pellets also correct?
Post by: MountainDevil54 on October 14, 2012, 08:35:26 AM
Post by: MountainDevil54 on October 14, 2012, 09:14:28 AM
IMR Whitehots
I used the CVA Accura V2, 245gr HP Powerbelts, 100gr IMR White Hots, Lightly lubed the barrel with Birchwood Casey Barricade, followed up with One dry patch and used both sides to mop up excess oil. Barrel was cleaned, oiled, dry patched between each shot.
Shots One through Three are listed below.
1701
1695
1690
Pretty impressive spread wise, but Velocity was a lot lower than what i thought it should be.
Cleaning the V2 again, i followed up with Birchwood Casey GUN SCRUBBER to fully clean the bore free of any wetness and oil that may have been in there.
Loaded up again with the same load i previously shot and here are the recorded numbers:
1660
1681
1671
21 FPS Spread. Not bad, but still not impressed with the velocity.
One odd deal i did run into with the non oiled barrel is the crud ring. Even though it was free of oil, the crud ring was much stronger and baked onto the Stainless Steel much harder and requires 6 pumps total of Birchwood Casey muzzle magic foam, and 3 patches. This is an area i want to experiment with more and see why the crud ring is worse with an oil free bore.
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T7 Pellets
While the IMR's are slower, they are more consistent on an oiled bore and non oiled bore than the Triple 7 Pellets.
Triple 7 Pellets, 100gr charge, winchester W209 primers, 245gr HP Powerbelt.
Oiled bore:
1775
1793
1792
Avg FPS : 1787 with a 18 FPS spread
Non Oiled bore:
1844
1808
1753
Avg FPS : 1802 with a spread of 91 FPS.
That really surprised the heck out to me to be honest.
Post by: Sabotloader on October 14, 2012, 01:32:45 PM
Most other people are getting near identical velocities with fresh pellets.
Sometime when you are bored go through and weigh each pellet in a box... it could rock your world and easily explain the velocity variance..
Post by: MountainDevil54 on October 14, 2012, 08:05:03 PM
When I tested the pellets i had already gone through and weighed multiple pellets from one package to the next. 33.2 grains by weight is what i normally came up with. They are extremely consistent in weight.
If you go to the powerbelt bullets ballistics chart you will find a big different between 100gr T7 pellets and 100gr IMR Whitehots.
250gr Powerbelt aerolite - 100gr IMR Whitehots = 1,648 FPS @ muzzle
250gr Powerbelt aerolite - 100gr T7 pellets = 1,831 FPS @ Muzzle
This IMO is why the Whitehots shoot a good deal cleaner than T7 pellets, they are reduced to be milder.
Post by: bugs n bones on October 15, 2012, 05:36:10 AM