Thread: Calculating recoil from muzzle energy and rifle weight?

There’s a recoil calculator in quickload. Just need to know rifle weight and load details. Failing that projectile and muzzle velocity or muzzle energy should allow a pretty close estimate.

Originally Posted by MB

Just weighing up options. I was interested to see that "lite" .308 rounds have less muzzle energy than standard .243 ammunition. Wondered how that translated to recoil.

300blk 135 supersonic have very little recoil
Make sure the speed the bullets are going once slowed down are still within their projectile performance range so they still expand

165 ballistic tips won’t expand even with bone contact at 1000fps



The subs don’t seem to do much even with a close range heart shot surprisingly but pigs are gonna pig and just keep running


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@MB There is probably someone on here that has already worked up a low recoil load for the caliber your shooting and maybe with luck for the same type of rifle.
Suggest providing those details and you would get some good starting points. I have a good one for .303

40g 2206h with 150g projectiles or better 30-30 projectiles if they will feed reliably in your gun ( wouldn’t in mine sadly)are my go to for my 10yr old,16in barrel and suppressed .308
Very similar recoil wise to my old 7.62x39

if its 30 cal a load with roberts 151 hollow points at around 1800 I hear work great

Gordons reloading tool shows recoil for each load.

Originally Posted by MB

Should be possible shouldn't it? Cant find an online calculator or formula. Any thoughts?

I should be able to figure it out on grt playing with the powder charge to match your velocity . Have you chronied said factory ammo ? I’d need velocity, projectile, weight of rifle and cartridge

Originally Posted by Bill999

300blk 135 supersonic have very little recoil
Make sure the speed the bullets are going once slowed down are still within their projectile performance range so they still expand

I've settled on 300BLK FTX 135gr supersonic and the tissue damage is shocking (in a good way!).

Originally Posted by Kelton

I should be able to figure it out on grt playing with the powder charge to match your velocity . Have you chronied said factory ammo ? I’d need velocity, projectile, weight of rifle and cartridge

Just working off published data for factory rounds at the moment.

Originally Posted by MB

I've settled on 300BLK FTX 135gr supersonic and the tissue damage is shocking (in a good way!).

Cool as il punch it in as 2085fps as that’s what my ballistic app has that factory offering at and let you no

Originally Posted by MB

I've settled on 300BLK FTX 135gr supersonic and the tissue damage is shocking (in a good way!).

awesome Ill be keen to see how you get on with them, I have a few handfuls of the buffalo river 135 supers and they zeroed for 150 with my 30m subx zero which is super convenient

Originally Posted by Bill999

awesome Ill be keen to see how you get on with them, I have a few handfuls of the buffalo river 135 supers and they zeroed for 150 with my 30m subx zero which is super convenient

I've posted this picture a few times before. This was the first time I used them. Big bloody holes (or bloody big holes, either way!), albeit at short range.

surprising to hear that, iv shot quite a few peacocks with them and it worked well so I am keen to give them a go on something bigger

If I can shoot to 200m with my 300blk it basically makes all my other rifles not necessary so id better be careful not to do that haha

Originally Posted by Bill999

surprising to hear that, iv shot quite a few peacocks with them and it worked well so I am keen to give them a go on something bigger

If I can shoot to 200m with my 300blk it basically makes all my other rifles not necessary so id better be careful not to do that haha

Yes, it also might mean that I don't need to buy another rifle! 732 ft.lb energy at 200 yards (Hornady data). Not the 1000 ft.lb that our American friends consider necessary for a clean kill and I wouldn't go chasing big reds or sambar with it, but for most other things...

Originally Posted by stug

Here is a recoil calculator

https://shooterscalculator.com/recoil-calculator.php

That calculator works well enough to compare recoil of different loads.

Here's a comparison i did with my M7 6.5CM with full power 140gr eldm loads compared to my 123gr reduced recoil youth loads for my 8 year old.

Damn stupid forum wont let me add the 2nd image.

But the 123 gr numbers are:

123gr
2600 fps
30gr Powder
8 Lbs rifle weight

Recoil impulse 2.09 lbs.sec
Recoil Vel 8.39 fps
Recoil Energy 8.75 ft.lbs


A big reduction in felt recoil