Ghost Ghost XR Carbine… shot count…

[Luis Leon]

Filled the gun to 240 BAR, PW on minimum, regulator at 100 BAR sending CPHPs. Lots of plinking along with some targets over two days. Over 100 shots. Am three shots into the tenth magazine loaded… Just sent two this morning to confirm POI at 25 yards, then a piece of chalk the size of a chipmunks head at 64 yards…! Now off to work…

 

[coolsound]

That is a lot of shots

 

[Corvid_Hunter]

Nothing wrong with those results.

 

[Danman]

Mighty good numbers Luis! I've been happy with my S.P.F on the Ghost HP as well @62 or so shots (165@HW 10 to 15 setting) will get better when I drop it to 150 but I've been afraid to so far . A I will be dumping alotta air and B. I don't want to induce any leaks, and C. there is some confusion on dumping all the pressure before lowering reg vs keeping 25-50bar in and then lowering it.
If anyone has some up-to-date tips/done it recently let me know!

 

[Luis Leon]

Mighty good numbers Luis! I've been happy with my S.P.F on the Ghost HP as well @62 or so shots (165@HW 10 to 15 setting) will get better when I drop it to 150 but I've been afraid to so far . A I will be dumping alotta air and B. I don't want to induce any leaks, and C. there is some confusion on dumping all the pressure before lowering reg vs keeping 25-50bar in and then lowering it.
If anyone has some up-to-date tips/done it recently let me know!

Workshop Guides - Brocock

brocock.co.uk

 

[Dogowski]

Filled the gun to 240 BAR, PW on minimum, regulator at 100 BAR sending CPHPs. Lots of plinking along with some targets over two days. Over 100 shots. Am three shots into the tenth magazine loaded… Just sent two this morning to confirm POI at 25 yards, then a piece of chalk the size of a chipmunks head at 64 yards…! Now off to work…

Looking good and amazing shot count.

 

[Soren Drost]

My BRK Ghost .177 HP started out as a carbine and this was my shot count

.177 uses more air ! And with a 300 cc bottle

 

[hameditor]

My BRK Ghost .177 HP started out as a carbine and this was my shot count

.177 uses more air ! And with a 300 cc bottle

View attachment 7251

Søren, more great shooting! But can you please explain exactly WHY .177 caliber uses more air? That seems counter-intuitive to me (and maybe could be to others, too).

 

[Soren Drost]

Søren, more great shooting! But can you please explain exactly WHY .177 caliber uses more air? That seems counter-intuitive to me (and maybe could be to others, too).

Information found on Airgun BBS

.177 pellets have a lower mass, therefore we need to increase the velocity to get the pellet at lets say 12 FPE.

To increase the velocity of the pellet we need more 'clout', or rather momentum, from the air to transfer to the pellet. Momentum = mass x velocity. We can increase the mass of the 'packet of air' by increasing the pressure (thus more air molecules per unit volume), hence we use more air to get the pellet flying with the desired kinetic energy, if the mass is lower.

A .22 at 12 ft/lbs has a velocity of about 600 FPS.
A .177 at 12 ft/lbs has a velocity of about 800 FPS.

A .177 requires more air to achieve the 12ft/lbs limit and because it is travelling at 33% quicker and is lighter than a .22 pellet when it leaves the rifle it also has a flatter trajectory.

 

[Dogowski]

Information found on Airgun BBS

.177 pellets have a lower mass, therefore we need to increase the velocity to get the pellet at lets say 12 FPE.

To increase the velocity of the pellet we need more 'clout', or rather momentum, from the air to transfer to the pellet. Momentum = mass x velocity. We can increase the mass of the 'packet of air' by increasing the pressure (thus more air molecules per unit volume), hence we use more air to get the pellet flying with the desired kinetic energy, if the mass is lower.

A .22 at 12 ft/lbs has a velocity of about 600 FPS.
A .177 at 12 ft/lbs has a velocity of about 800 FPS.

A .177 requires more air to achieve the 12ft/lbs limit and because it is travelling at 33% quicker and is lighter than a .22 pellet when it leaves the rifle it also has a flatter trajectory.

Nicely explained Soren, thank you for that!